Wetenschappelijk overzicht 2012 - 2013 Wetenschappelijk overzicht 2012 - 2013 1 Deventer, maart 2014 Inhoud Voorwoord Voorwoord 3 Voor u ligt het wetenschappelijk jaaroverzicht 2012-2013 van het Deventer Ziekenhuis en het Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO). Het Deventer Ziekenhuis is onderdeel van de Samenwerkende Topklinische OpleidingsZiekenhuizen (STZ). Naast opleiden en topklinische functies, is wetenschappelijk onderzoek een belangrijk speerpunt van STZ-ziekenhuizen. Ook het RISO hecht waarde aan het opzetten van – en deelnemen aan wetenschappelijk onderzoek. Om als zorginstelling mee te gaan in ontwikkelingen en om een aantrekkelijke werkomgeving te zijn voor professionals, is het uitvoeren van klinisch wetenschappelijk onderzoek van wezenlijk belang. De afgelopen jaren is er binnen het Deventer Ziekenhuis al geïnvesteerd in het bevorderen van onderzoek, wat ertoe bijgedragen heeft dat er een goede basis ligt voor het faciliteren van klinisch wetenschappelijk onderzoek. Dit uit zich in verscheidene wetenschappelijk activiteiten: van het begeleiden van co-assistenten bij hun wetenschappelijke stage, tot het deelnemen aan grootschalige multicenter onderzoeken. Deze verschillende activiteiten zijn weergegeven in dit boek, per vakgebied onderverdeeld in de onderdelen publicaties (als co-auteur in PubMed geïndexeerd), collaborations (als collaborator in PubMed geïndexeerd), voordrachten, posters en promoties. Van de ongeveer 30 specialismen in DZ, zijn er 22 specialismen waarbij in de jaren 2012 en 2013 wetenschappelijk activiteiten hebben plaatsgevonden. De top vier van specialismen met de meeste publicaties wordt gevormd door heelkunde, gynaecologie, ziekenhuisfarmacie en cardiologie. Publicaties geproduceerd vanuit de cardiologie, gynaecologie en MDL zijn gepubliceerd in de bladen met de hoogste impact factor. Het wetenschappelijk werk in het RISO in 2012 en 2013 vertaalt zich in 8 gepubliceerde artikelen met een gemiddelde impact factor score van 3,6, een promotie en een groot aantal posterpresentaties op internationale congressen. Deventer Ziekenhuis 5 Anesthesiologie6 Cardiologie7 Dermatologie24 Gynaecologie29 Heelkunde50 Interne Geneeskunde 71 Kaakchirurgie86 Keel Neus Oorheelkunde 87 Kindergeneeskunde88 Klinische Chemie 91 Klinische Pathologie 94 Klinische Psychologie 96 Longziekten102 Maag Darm en Leverziekten 104 Microbiologie113 Neurologie120 Oogheelkunde122 Opleidingsinstituut125 Orthopedie126 Radiologie132 Spoedeisende Hulp 137 Ziekenhuisfarmacie138 Ziekenhuishygiëne154 Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) 155 Wetenschapsprijzen 2012-2013 165 State of the Art Lectures 2012-2013 Impact Factors 167 Al met al prachtige resultaten op het gebied van klinisch wetenschappelijk onderzoek in 2012 en 2013, die u nu niet had kunnen lezen als de inzet van Marian Boerstoel, informatiespecialist in het Deventer Ziekenhuis, niet zo tomeloos was geweest. Waarvoor onze grote dank! Wij wensen u veel leesplezier en hopen dat ook 2014 maar een jaar mag worden vol wetenschappelijke inspiratie! 169 Esther van ’t Riet, wetenschapscoördinator Marjo van den Elsen, verplegingswetenschapper Wetenschapsbureau, Teaching Hospital DZ Auteurs index 171 2 3 Deventer Ziekenhuis 4 5 Anesthesiologie Cardiologie Posters Publicaties Single shot femoral nerve block offers superior postoperative mobilisation at an equal analgesia level after total. Knee arthroplasty compared to continuous nerve block using a catheter. Author(s): Heeremans E.H., Pape N., Koorevaar R.C.T., Cobben J.M.G. European Society of Anesthesiology Parijs 9-12 juni 2012 ECG changes after electroconvulsive therapy, cause or consequence? Tuininga YS. Neth Heart J. 2012 Mar;20(3):129-31. Source Department of Cardiology, Deventer Hospital, Nico Bolkesteinlaan 75, 7416 SE, Deventer, the Netherlands. Low thoracic versus lumbar epidural anesthesia during the first phase of labor. Auteur: J. Gutteling Begeleider: J.M.G. Cobben Locatie: Anesthesiologie, Deventer Ziekenhuis Periode: oktober 2012 – maart 2013 Anesthesiologie Wetenschappelijk overzicht 2012 - 2013 6 7 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Coronary artery assessment by multidetector computed tomography in patients with prosthetic heart valves. Habets J, van den Brink RB, Uijlings R, Spijkerboer AM, Mali WP, Chamuleau SA, Budde RP. Eur Radiol. 2012 Jun;22(6):1278-86. Abstract OBJECTIVES: Patients with prosthetic heart valves may require assessment for coronary artery disease. We assessed whether valve artefacts hamper coronary artery assessment by multidetector CT. METHODS: ECG-gated or -triggered CT angiograms were selected from our PACS archive based on the presence of prosthetic heart valves. The best systolic and diastolic axial reconstructions were selected for coronary assessment. Each present coronary segment was scored for the presence of valve-related artefacts prohibiting coronary artery assessment. Scoring was performed in consensus by two observers. RESULTS: Eighty-two CT angiograms were performed on a 64-slice (n = 27) or 256-slice (n = 55) multidetector CT. Eighty-nine valves and five annuloplasty rings were present. Forty-three out of 1160 (3.7%) present coronary artery segments were non-diagnostic due to valve artefacts (14/82 patients). Valve artefacts were located in right coronary artery (15/43; 35%), left anterior descending artery (2/43; 5%), circumflex artery (14/43; 32%) and marginal obtuse (12/43; 28%) segments. All cobalt-chrome containing valves caused artefacts prohibiting coronary assessment. Biological and titanium-containing valves did not cause artefacts except for three specific valve types. CONCLUSIONS: Most commonly implanted prosthetic heart valves do not hamper coronary assessment on multidetector CT. Cobalt-chrome containing prosthetic heart valves preclude complete coronary artery assessment because of severe valve artefacts. KEY POINTS : • Most commonly implanted prosthetic heart valves do not hamper coronary artery assessment • Prosthetic heart valve composition determines the occurrence of prosthetic heart Wetenschappelijke Stages valve-related artefacts • Björk-Shiley and Sorin tilting disc valves preclude diagnostic coronary artery segment assessment. hemorrhage. The choice between warfarin and aspirin should be individualized. (Funded by the National Institute of Neurological Disorders and Stroke; WARCEF ClinicalTrials.gov number, NCT00041938.). Wetenschappelijk overzicht 2012 - 2013 Design and methodology of the COACH-2 (Comparative study on guideline adherence and patient compliance in heart failure patients) study: HF clinics versus primary care in stable patients on optimal therapy. Luttik ML, Brons M, Jaarsma T, Hillege HL, Hoes A, de Jong R, Linssen G, Lok DJ, Berger M, van Veldhuisen DJ. Neth Heart J. 2012 Aug;20(7-8):307-12. Source Department of Cardiology, University Medical Center Groningen, University of Groningen, PO BOX 30.001, 9700, RB, Groningen, the Netherlands. Abstract BACKGROUND: Since the number of heart failure (HF) patients is still growing and long-term treatment of HF patients is necessary, it is important to initiate effective ways for structural involvement of primary care services in HF management programs. However, evidence on whether and when patients can be referred back to be managed in primary care is lacking. AIM: To determine whether long-term patient management in primary care, after initial optimisation of pharmacological and non-pharmacological treatment in a specialised HF clinic, is equally effective as long-term management in a specialised HF clinic in terms of guideline adherence and patient compliance. METHOD: The study is designed as a randomised, controlled, non-inferiority trial. Two-hundred patients will be randomly assigned to be managed and followed in primary care or in a HFclinic. Patients are eligible to participate if they are (1) clinically stable, (2) optimally up-titrated on medication (according to ESC guidelines) and, (3) have received optimal education and counselling on pre-specified issues regarding HF and its treatment. Furthermore, close cooperation between secondary and primary care in terms of back referral to or consultation of the HF clinic will be provided.The primary outcome will be prescriber adherence and patient compliance with medication after 12 months. Secondary outcomes measures will be readmission rate, mortality, quality of life and patient compliance with other lifestyle changes. EXPECTED RESULTS: The results of the study will add to the understanding of the role of primary care and HF clinics in the long-term follow-up of HF patients. Social burden and lifestyle in adults with congenital heart disease. Zomer AC, Vaartjes I, Uiterwaal CS, van der Velde ET, Sieswerda GJ, Wajon 8 9 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Cardiologie Warfarin and aspirin in patients with heart failure and sinus rhythm. Homma S, Thompson JL, Pullicino PM, Levin B, Freudenberger RS, Teerlink JR, Ammon SE, Graham S, Sacco RL, Mann DL, Mohr JP, Massie BM, Labovitz AJ, Anker SD, Lok DJ, Ponikowski P, Estol CJ, Lip GY, Di Tullio MR, Sanford AR, Mejia V, Gabriel AP, del Valle ML, Buchsbaum R; WARCEF Investigators. N Engl J Med. 2012 May 17;366(20):1859-69. Collaborators (550) Source Columbia University Medical Center, New York, NY 10032, USA. Abstract BACKGROUND: It is unknown whether warfarin or aspirin therapy is superior for patients with heart failure who are in sinus rhythm. METHODS: We designed this trial to determine whether warfarin (with a target international normalized ratio of 2.0 to 3.5) or aspirin (at a dose of 325 mg per day) is a better treatment for patients in sinus rhythm who have a reduced left ventricular ejection fraction (LVEF). We followed 2305 patients for up to 6 years (mean [±SD], 3.5±1.8). The primary outcome was the time to the first event in a composite end point of ischemic stroke, intracerebral hemorrhage, or death from any cause. RESULTS: The rates of the primary outcome were 7.47 events per 100 patient-years in the warfarin group and 7.93 in the aspirin group (hazard ratio with warfarin, 0.93; 95% confidence interval [CI], 0.79 to 1.10; P=0.40). Thus, there was no significant overall difference between the two treatments. In a time-varying analysis, the hazard ratio changed over time, slightly favoring warfarin over aspirin by the fourth year of follow-up, but this finding was only marginally significant (P=0.046). Warfarin, as compared with aspirin, was associated with a significant reduction in the rate of ischemic stroke throughout the follow-up period (0.72 events per 100 patient-years vs. 1.36 per 100 patient-years; hazard ratio, 0.52; 95% CI, 0.33 to 0.82; P=0.005). The rate of major hemorrhage was 1.78 events per 100 patient-years in the warfarin group as compared with 0.87 in the aspirin group (P<0.001). The rates of intracerebral and intracranial hemorrhage did not differ significantly between the two treatment groups (0.27 events per 100 patient-years with warfarin and 0.22 with aspirin, P=0.82). CONCLUSIONS: Among patients with reduced LVEF who were in sinus rhythm, there was no significant overall difference in the primary outcome between treatment with warfarin and treatment with aspirin. A reduced risk of ischemic stroke with warfarin was offset by an increased risk of major EM, Plomp K, van Bergen PF, Verheugt CL, Krivka E, de Vries CJ, Lok DJ, Grobbee DE, Mulder BJ. Am J Cardiol. 2012 Jun 1;109(11):1657-63. Source Department of Cardiology, Academic Medical Center, Amsterdam, the Netherlands. Abstract We aimed to evaluate how the presence and severity of congenital heart disease (CHD) influence social life and lifestyle in adult patients. A random sample (n = 1,496) from the CONgenital CORvitia (n = 11,047), the Dutch national registry of adult patients with CHD, completed a questionnaire on educational attainment, employment and marital statuses, and lifestyle (response 76%). The Utrecht Health Project provided a large reference group (n = 6,810) of unaffected subjects. Logistic regression models were used for subgroup analyses and to adjust for age, gender, and socioeconomic status where appropriate. Of all patients 51.5% were men (median age 39 years, interquartile range 29 to 51) with mild (46%), moderate (44%), and severe (10%) CHD. Young (<40-year-old) patients with CHD were more likely to have achieved a lower education (adjusted odds ratios [ORs] 1.6 for men and 1.9 for women, p <0.05 for the 2 comparisons), significantly more often unemployed (adjusted ORs 5.9 and 2.0 for men and women, respectively), and less likely to be in a relationship compared to the reference group (adjusted ORs 8.5 for men and 4.5 for women). These poorer outcomes were seen in all severity groups. Overall, the CHD population smoked less (adjusted OR 0.5, p <0.05), had more sports participation (adjusted OR 1.2, p <0.05), and had less obesity (adjusted OR 0.7, p <0.05) than the reference group. In conclusion, there was a substantial social disadvantage in adult patients with CHD, which was seen in all severity groups and primarily in young men. In contrast, adults with CHD had healthier lifestyles compared to the reference group. Cardiac sarcoidosis mimicking non-ST-elevation myocardial infarction. Uijlings R, Balt JC, Boom P, Wever E. J Cardiovasc Med (Hagerstown). 2012 Apr;13(4):277-80. Author information Department of Cardiology, University Medical Center, Utrecht, The Netherlands. Incremental prognostic power of novel biomarkers (growth-differentiation factor-15, high-sensitivity C-reactive protein, galectin-3, and highsensitivity troponin-T) in patients with advanced chronic heart failure. Lok DJ, Klip IT, Lok SI, Bruggink-André de la Porte PW, Badings E, van Wijngaarden J, Voors AA, de Boer RA, van Veldhuisen DJ, van der Meer P. Am J Cardiol. 2013 Sep 15;112(6):831-7. Wetenschappelijk overzicht 2012 - 2013 10 11 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Cardiologie Charcoal or chocolate: what captures the heart? Bijvoet GP, Cramer MJ, Uijlings R, Kirkels JH, Schipper ME. J Clin Pathol. 2012 Sep;65(9):859-61. Iron deficiency in chronic heart failure: an international pooled analysis. Klip IT, Comin-Colet J, Voors AA, Ponikowski P, Enjuanes C, Banasiak W, Lok DJ, Rosentryt P, Torrens A, Polonski L, van Veldhuisen DJ, van der Meer P, Jankowska EA. Am Heart J. 2013 Apr;165(4):575-582. Author information Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Abstract BACKGROUND: Iron deficiency (ID) is an emerging problem in patients with chronic heart failure (HF) and can be a potential therapeutic target. However, not much is known about the prevalence, predictors, and prognosis of ID in patients with chronic HF. METHODS: In an international pooled cohort comprising 1,506 patients with chronic HF, we studied the clinical associates of ID and its prognostic consequences. RESULTS: Iron deficiency (defined as a ferritin level <100 μg/L or ferritin 100-299 μg/L with a transferrin saturation <20%) was present in 753 patients (50%). Anemic patients were more often iron deficient than nonanemic patients (61.2% vs 45.6%, P < .001). Other independent predictors of ID were higher New York Heart Association class, higher N-terminal pro-brain-type natriuretic peptide levels, lower mean corpuscular volume levels, and female sex (all P < .05). During follow-up (median 1.92 years, interquartile range 1.18-3.26 years), 440 patients died (29.2%). Kaplan-Meier survival analysis revealed ID as a strong predictor for mortality (log rank χ(2) 10.2, P = .001). In multivariable hazard models, ID (but not anemia) remained a strong and independent predictor of mortality (hazard ratio 1.42, 95% confidence interval 1.14-1.77, P = .002). Finally, the presence of ID significantly enhanced risk classification and integrated discrimination improvement when added to a prediction model with established risk factors. CONCLUSIONS: Iron deficiency is common in patients with chronic HF, relates to disease severity, and is a strong and independent predictor of outcome. In this study, ID appears to have greater predictive power than anemia. Source Deventer Hospital, Deventer, the Netherlands. Abstract Elevated natriuretic peptides provide strong prognostic information in patients with heart failure (HF). The role of novel biomarkers in HF needs to be established. Our objective was to evaluate the prognostic power of novel biomarkers, incremental to the N-terminal portion of the natriuretic peptide (NT-proBNP) in chronic HF. Concentrations of circulating NT-proBNP, growth differentiation factor 15 (GDF-15), high-sensitivity C-reactive protein (hs-CRP), galectin-3 (Gal-3), and high-sensitivity troponin T (hs-TnT) were measured and related to all-cause long-term mortality. Of 209 patients (age 71 ± 10 years, 73% male patients, 97% New York Heart Association class III), 151 (72%) died during a median follow-up of 8.7 ± 1 year. The calculated area under the curve for NT-proBNP was 0.63, GDF-15 0.78, hs-CRP 0.66, Gal-3 0.68, and hs-TnT 0.68 (all p <0.01). Each marker was predictive for mortality in univariate analysis. In multivariate analysis, elevated concentrations of GDF-15 (hazard ratio [HR] 1.41, confidence interval [CI] 1.1 to 178, p = 0.005), hs-CRP (HR 1.38, CI 1.15 to 1.67, p = 0.001), and hs-TnT (HR 1.27, CI 1.06 to 1.53, p = 0.008) were independently related to mortality. All novel markers had an incremental value to NT-proBNP, using the integrated discrimination improvement. In conclusion, in chronic HF, GDF-15, hs-CRP, and hs-TnT are independent prognostic markers, incremental to NT-proBNP, in predicting long-term mortality. In this study, GDF-15 is the most predictive marker, even stronger than NT-proBNP. with low ejection fraction in sinus rhythm for the primary outcome: first to occur of 84 incident ischemic strokes (IIS), 7 intracerebral hemorrhages or 531 deaths. Prespecified secondary analysis showed a 48% hazard ratio reduction (p = 0.005) for warfarin in IIS. Cardioembolism is likely the main pathogenesis of stroke in heart failure. We examined the IIS benefit for warfarin in more detail in post hoc secondary analyses. METHODS: We subtyped IIS into definite, possible and noncardioembolic using the Stroke Prevention in Atrial Fibrillation method. Statistical tests, stratified by prior ischemic stroke or transient ischemic attack, were the conditional binomial for independent Poisson variables for rates, the CochranMantel-Haenszel test for stroke subtype and the van Elteren test for modified Rankin Score (mRS) and National Institute of Health Stroke Scale (NIHSS) distributions, and an exact test for proportions. RESULTS: Twenty-nine of 1,142 warfarin and 55 of 1,163 aspirin patients had IIS. The warfarin IIS rate (0.727/100 patient-years, PY) was lower than for aspirin (1.36/100 PY, p = 0.003). Definite cardioembolic IIS was less frequent on warfarin than aspirin (0.22 vs. 0.55/100 PY, p = 0.012). Possible cardioembolic IIS tended to be less frequent on warfarin than aspirin (0.37 vs. 0.67/100 PY, p = 0.063) but noncardioembolic IIS showed no difference: 5 (0.12/100 PY) versus 6 (0.15/100 PY, p = 0.768). Among patients experiencing IIS, there were no differences by treatment arm in fatal IIS, baseline mRS, mRS 90 days after IIS, and change from baseline to post-IIS mRS. The warfarin arm showed a trend to a lower proportion of severe nonfatal IIS [mRS 3-5; 3/23 (13.0%) vs. 16/48 (33.3%), p = 0.086]. There was no difference in NIHSS at the time of stroke (p = 0.825) or in post-IIS mRS (p = 0.948) between cardioembolic, possible cardioembolic and noncardioembolic stroke including both warfarin and aspirin groups. CONCLUSIONS: The observed benefits in the reduction of IIS for warfarin compared to aspirin are most significant for cardioembolic IIS among patients with low ejection fraction in sinus rhythm. This is supported by trends to lower frequencies of severe IIS and possible cardioembolic IIS in patients on warfarin compared to aspirin. Optimale hartfalenzorg op lange termijn: vervolgonderzoek van het Deventer-Alkmaar hartfalenproject Pruijsers-Lamers PH Cordiaal 2013;33(5):162-5. Wetenschappelijk overzicht 2012 - 2013 Benefit of warfarin compared with aspirin in patients with heart failure in sinus rhythm: a subgroup analysis of WARCEF, a randomized controlled trial. Homma S, Thompson JL, Sanford AR, Mann DL, Sacco RL, Levin B, Pullicino PM, Freudenberger RS, Teerlink JR, Graham S, Mohr JP, Massie BM, Labovitz AJ, Di Tullio MR, Gabriel AP, Lip GY, Estol CJ, Lok DJ, Ponikowski P, Anker SD; WARCEF Investigators. Circ Heart Fail. 2013 Sep 1;6(5):988-97. 12 13 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Cardiologie Stroke in heart failure in sinus rhythm: the Warfarin versus Aspirin in Reduced Cardiac Ejection Fraction trial. Pullicino PM, Thompson JL, Sacco RL, Sanford AR, Qian M, Teerlink JR, Haddad H, Diek M, Freudenberger RS, Labovitz AJ, Di Tullio MR, Lok DJ, Ponikowski P, Anker SD, Graham S, Mann DL, Mohr JP, Homma S; WARCEF Investigators. Cerebrovasc Dis. 2013;36(1):74-8. Author information University of Kent, Canterbury, UK. Abstract BACKGROUND: The Warfarin versus Aspirin in Reduced Cardiac Ejection Fraction trial found no difference between warfarin and aspirin in patients Author information the Division of Cardiology, Department of Medicine. Abstract BACKGROUND: The Warfarin versus Aspirin in Reduced Cardiac Ejection Fraction (WARCEF) trial found no difference in the primary outcome between warfarin and aspirin in 2305 patients with reduced left ventricular ejection fraction in sinus rhythm. However, it is unknown whether any subgroups benefit from warfarin or aspirin. METHODS AND RESULTS: We used a Cox model stepwise selection procedure to identify subgroups that may benefit from warfarin or aspirin on the WARCEF primary outcome. A secondary analysis added major hemorrhage to the outcome. The primary efficacy outcome was time to the first to occur of ischemic stroke, intracerebral hemorrhage, or death. Only age group was a significant treatment effect modifier (P for interaction, 0.003). Younger patients benefited from warfarin over aspirin on the primary outcome (4.81 versus 6.76 events per 100 patient-years: hazard ratio, 0.63; 95% confidence interval, 0.48-0.84; P=0.001). In older patients, therapies did not differ (9.91 versus 9.01 events per 100 patient-years: hazard ratio, 1.09; 95% confidence interval, 0.88-1.35; P=0.44). With major hemorrhage added, in younger patients the event rate remained lower for warfarin than aspirin (5.41 versus 7.25 per 100 patient-years: hazard ratio, 0.68; 95% confidence interval, 0.52-0.89; P=0.005), but in older patients it became significantly higher for warfarin (11.80 versus 9.35 per 100 patient-years: hazard ratio, 1.25; 95% confidence interval, 1.02-1.53; P=0.03). CONCLUSIONS: In patients <60 years, warfarin improved outcomes over aspirin with or without inclusion of major hemorrhage. In patients ≥60 years, there was no treatment difference, but the aspirin group had significantly better outcomes when major hemorrhage was included. the routine clinical care of patients discharged after an acute coronary syndrome, as compared with usual care only. DESIGN: RESPONSE (Randomised Evaluation of Secondary Prevention by Outpatient Nurse SpEcialists) was a randomised clinical trial. SETTING: Multicentre trial in secondary and tertiary healthcare settings. PARTICIPANTS: 754 patients admitted for acute coronary syndrome. INTERVENTION: A nurse-coordinated prevention programme, consisting of four outpatient nurse clinic visits, focusing on healthy lifestyles, biometric risk factors and medication adherence, in addition to usual care. MAIN OUTCOME MEASURES: The main outcome was 10-year cardiovascular mortality risk as estimated by Systematic Coronary Risk Evaluation at 12 months follow-up. Secondary outcomes included Framingham Coronary Risk Score at 12 months, in addition to changes in individual risk factors. Risk factor control was classified as ‘poor’ if 0 to 3 factors were on target, ‘fair’ if 4 to 6 factors were on target, and ‘good’ if 7 to 9 were on target. RESULTS: The mean Systematic Coronary Risk Evaluation at 12 months was 4.4 per cent (SD 4.5) in the intervention group and 5.4 per cent (SD 6.2) in the control group (p=0.021), representing a 17.4% relative risk reduction. At 12 months, risk factor control classified as ‘good’ was achieved in 35% of patients in the intervention group compared with 25% in the control group (p=0.003). Attendance to the nurse-coordinated prevention programme was 92%. In the intervention group, 86 rehospitalisations were observed against 132 in the control group (relative risk reduction 34.8%, p=0.023). CONCLUSIONS: The nurse-coordinated hospital-based prevention programme in addition to usual care is a practical, yet effective method for reduction of cardiovascular risk in patients with coronary disease. Our data suggest that the counselling component of the programme may lead to a reduction in hospital readmissions. TRIAL REGISTRATION TRIALREGISTERNL IDENTIFIER: TC1290. Wetenschappelijk overzicht 2012 - 2013 Early or late intervention in high-risk non-ST-elevation acute coronary syndromes: results of the ELISA-3 trial. Badings EA, The SH, Dambrink JH, van Wijngaarden J, Tjeerdsma G, Rasoul S, Timmer JR, van der Wielen ML, Lok DJ, van ‘t Hof AW. EuroIntervention. 2013 May 20;9(1):54-61. Author information Deventer Ziekenhuis, Deventer, The Netherlands. Abstract AIMS: To compare an early to a delayed invasive strategy in high-risk patients with NSTE-ACS. METHODS AND RESULTS: In this prospective multicentre trial, 542 patients hospitalised with NSTE-ACS were randomised to either an immediate (an14 15 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Cardiologie Effect of a nurse-coordinated prevention programme on cardiovascular risk after an acute coronary syndrome: main results of the RESPONSE randomised trial. Jorstad HT, von Birgelen C, Alings AM, Liem A, van Dantzig JM, Jaarsma W, Lok DJ, Kragten HJ, de Vries K, de Milliano PA, Withagen AJ, Scholte Op Reimer WJ, Tijssen JG, Peters RJ. Heart. 2013 Oct;99(19):1421-30. Author information Department of Cardiology, Academic Medical Center-University of Amsterdam, Amsterdam, Noord Holland, The Netherlands. Abstract OBJECTIVE: To quantify the impact of a practical, hospital-based nursecoordinated prevention programme on cardiovascular risk, integrated into giography and revascularisation if appropriate <12 hr) or a delayed invasive strategy (>48 hr after randomisation). Patients were eligible if they had two of the following three high-risk characteristics: evidence of extensive myocardial ischaemia on ECG, elevated biomarkers for myocardial necrosis (TropT >0.10 μg/L), and an age above 65 years. Primary endpoint of the study was the combined incidence of death, reinfarction and/or recurrent ischaemia at 30-day follow-up. Secondary endpoints were enzymatic infarct size as assessed by a single cardiac troponin T, at 72-96 hours after admission or at discharge, and the percentage of patients without a rise in CKMB during admission. Median age was 71.9 (interquartile range [IQR] 64.5-78.4) years. Median time between randomisation and start of angiography was 2.6 (IQR 1.2-6.2) hours in the immediate and 54.9 (44.2-74.5) hours in the delayed intervention group. The composite of death, reinfarction and/or recurrent ischaemia at 30 days occurred in 12% of patients and was not significantly different between the two groups (9.9% and 14.2%, respectively, p=0.135). All secondary endpoints and bleeding complications were comparable. Hospital duration was two days shorter in the immediate intervention group (4 days [IQR 2-10] vs. 6 days [IQR 4-12]). CONCLUSIONS: Although no definitive conclusion can be drawn due to a lower than expected prevalence of the primary endpoint, an immediate invasive strategy was safe and feasible but not superior to a delayed invasive strategy in terms of the combined primary endpoint of death, reinfarction and/or recurrent ischaemia at 30 days. These results are consistent with previous randomised trials which studied the effect of timing of angiography in patients with NSTE-ACS. Trial Registration: ISRCTN Register 9230163. METHODS AND RESULTS: A total of 240 HF patients with New York Heart Association (NYHA) Class III and IV were included. Patients were followed for 8.7 ± 1 years, had a mean age of 71 ± 0.6 years and 73 % of the study population was male. Circulating levels of NT-proBNP and Gal-3 were measured. Serial echocardiography was performed at baseline and at 3 months. At baseline median left ventricular end-diastolic volume (LVEDV) was 267 mL [interquartile range 232-322]. Patients were divided into three groups according to the change in LVEDV. Patients in whom the LVEDV decreased over time had significant lower levels of Gal-3 at entry compared to patients in whom the LVEDV was stable or increased (14.7 vs. 17.9 vs. 19.0 ng/mL; p = 0.004 for trend), whereas no significant differences were seen in levels of NT-proBNP (p = 0.33). Multivariate linear regression analyses revealed that Gal-3 levels were positively correlated to change in LVEDV (p = 0.007). In addition, Gal-3 was a significant predictor of mortality after long-term followup (p = 0.001). CONCLUSION: Gal-3 is associated with left ventricular remodeling determined by serial echocardiography and predicts long-term mortality in patients with severe chronic HF. Rate control in atrial fibrillation, insight into the RACE II study. Groenveld HF, Crijns HJ, Tijssen JG, Alings M, Hillege HL, Tuininga YS, Van den Berg MP, Van Veldhuisen DJ, Van Gelder IC. Neth Heart J. 2013 Apr;21(4):199-204. Author information Department of Cardiology, Thoraxcenter, University of Groningen, University Medical Center Groningen, P.O. Box 30.001, 9700 RB, Groningen, the Netherlands. Wetenschappelijk overzicht 2012 - 2013 Collaborations Basal insulin and cardiovascular and other outcomes in dysglycemia. ORIGIN Trial Investigators, Gerstein HC, Bosch J, Dagenais GR, Díaz R, Jung H, Maggioni AP, Pogue J, Probstfield J, Ramachandran A, Riddle MC, Rydén LE, Yusuf S. N Engl J Med. 2012 Jul 26;367(4):319-28. Collaborators (2737) Van der Sluis A, Lok D Abstract BACKGROUND: The provision of sufficient basal insulin to normalize fasting plasma glucose levels may reduce cardiovascular events, but such a possibility has not been formally tested. 16 17 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Cardiologie Galectin-3 is an independent marker for ventricular remodeling and mortality in patients with chronic heart failure. Lok DJ, Lok SI, Bruggink-André de la Porte PW, Badings E, Lipsic E, van Wijngaarden J, de Boer RA, van Veldhuisen DJ, van der Meer P. Clin Res Cardiol. 2013 Feb;102(2):103-10. Author information Deventer Hospital, Nico Bolkesteinlaan 75, 7415 CM, Deventer, The Netherlands. Abstract BACKGROUND: Galectin-3 (Gal-3) is a recently discovered marker for myocardial fibrosis and elevated levels are associated with an impaired outcome after short-term follow-up in heart failure (HF) patients. However, whether Gal-3 is related to cardiac remodeling and outcome after long-term follow-up is unknown. Therefore, we determined the utility of Gal-3 as a novel biomarker for left ventricular remodeling and long-term outcome in patients with severe chronic HF. METHODS: We randomly assigned 12,537 people (mean age, 63.5 years) with cardiovascular risk factors plus impaired fasting glucose, impaired glucose tolerance, or type 2 diabetes to receive insulin glargine (with a target fasting blood glucose level of ≤95 mg per deciliter [5.3 mmol per liter]) or standard care and to receive n-3 fatty acids or placebo with the use of a 2-by-2 factorial design. The results of the comparison between insulin glargine and standard care are reported here. The coprimary outcomes were nonfatal myocardial infarction, nonfatal stroke, or death from cardiovascular causes and these events plus revascularization or hospitalization for heart failure. Microvascular outcomes, incident diabetes, hypoglycemia, weight, and cancers were also compared between groups. RESULTS: The median follow-up was 6.2 years (interquartile range, 5.8 to 6.7). Rates of incident cardiovascular outcomes were similar in the insulinglargine and standard-care groups: 2.94 and 2.85 per 100 person-years, respectively, for the first coprimary outcome (hazard ratio, 1.02; 95% confidence interval [CI], 0.94 to 1.11; P=0.63) and 5.52 and 5.28 per 100 person-years, respectively, for the second coprimary outcome (hazard ratio, 1.04; 95% CI, 0.97 to 1.11; P=0.27). New diabetes was diagnosed approximately 3 months after therapy was stopped among 30% versus 35% of 1456 participants without baseline diabetes (odds ratio, 0.80; 95% CI, 0.64 to 1.00; P=0.05). Rates of severe hypoglycemia were 1.00 versus 0.31 per 100 person-years. Median weight increased by 1.6 kg in the insulin-glargine group and fell by 0.5 kg in the standard-care group. There was no significant difference in cancers (hazard ratio, 1.00; 95% CI, 0.88 to 1.13; P=0.97). CONCLUSIONS: When used to target normal fasting plasma glucose levels for more than 6 years, insulin glargine had a neutral effect on cardiovascular outcomes and cancers. Although it reduced new-onset diabetes, insulin glargine also increased hypoglycemia and modestly increased weight. (Funded by Sanofi; ORIGIN ClinicalTrials.gov number, NCT00069784.). METHODS: In this double-blind study with a 2-by-2 factorial design, we randomly assigned 12,536 patients who were at high risk for cardiovascular events and had impaired fasting glucose, impaired glucose tolerance, or diabetes to receive a 1-g capsule containing at least 900 mg (90% or more) of ethyl esters of n-3 fatty acids or placebo daily and to receive either insulin glargine or standard care. The primary outcome was death from cardiovascular causes. The results of the comparison between n-3 fatty acids and placebo are reported here. RESULTS: During a median follow up of 6.2 years, the incidence of the primary outcome was not significantly decreased among patients receiving n-3 fatty acids, as compared with those receiving placebo (574 patients [9.1%] vs. 581 patients [9.3%]; hazard ratio, 0.98; 95% confidence interval [CI], 0.87 to 1.10; P=0.72). The use of n-3 fatty acids also had no significant effect on the rates of major vascular events (1034 patients [16.5%] vs. 1017 patients [16.3%]; hazard ratio, 1.01; 95% CI, 0.93 to 1.10; P=0.81), death from any cause (951 [15.1%] vs. 964 [15.4%]; hazard ratio, 0.98; 95% CI, 0.89 to 1.07; P=0.63), or death from arrhythmia (288 [4.6%] vs. 259 [4.1%]; hazard ratio, 1.10; 95% CI, 0.93 to 1.30; P=0.26). Triglyceride levels were reduced by 14.5 mg per deciliter (0.16 mmol per liter) more among patients receiving n-3 fatty acids than among those receiving placebo (P<0.001), without a significant effect on other lipids. Adverse effects were similar in the two groups. CONCLUSIONS: Daily supplementation with 1 g of n-3 fatty acids did not reduce the rate of cardiovascular events in patients at high risk for cardiovascular events. (Funded by Sanofi; ORIGIN ClinicalTrials.gov number, NCT00069784.). n-3 fatty acids and cardiovascular outcomes in patients with dysglycemia. ORIGIN Trial Investigators, Bosch J, Gerstein HC, Dagenais GR, Díaz R, Dyal L, Jung H, Maggiono AP, Probstfield J, Ramachandran A, Riddle MC, Rydén LE, Yusuf S. N Engl J Med. 2012 Jul 26;367(4):309-18. Collaborators (2737) Van der Sluis A, Lok D Abstract BACKGROUND: The use of n-3 fatty acids may prevent cardiovascular events in patients with recent myocardial infarction or heart failure. Their effects in patients with (or at risk for) type 2 diabetes mellitus are unknown. Wetenschappelijk overzicht 2012 - 2013 18 19 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Cardiologie Effects of dalcetrapib in patients with a recent acute coronary syndrome. Schwartz GG, Olsson AG, Abt M, Ballantyne CM, Barter PJ, Brumm J, Chaitman BR, Holme IM, Kallend D, Leiter LA, Leitersdorf E, McMurray JJ, Mundl H, Nicholls SJ, Shah PK, Tardif JC, Wright RS; dal-OUTCOMES Investigators. N Engl J Med. 2012 Nov 29;367(22):2089-99. Collaborators (1041) Lok DJ Author information Cardiology Section, Veterans Affairs Medical Center and University of Colorado School of Medicine, Denver, 80220, USA. gregory.schwartz@va.gov Abstract BACKGROUND: In observational analyses, higher levels of high-density lipoprotein (HDL) cholesterol have been associated with a lower risk of coronary heart disease events. However, whether raising HDL cholesterol levels therapeutically reduces cardiovascular risk remains uncertain. Inhibition of cholesteryl ester transfer protein (CETP) raises HDL cholesterol levels and might therefore improve cardiovascular outcomes. METHODS: We randomly assigned 15,871 patients who had had a recent acute coronary syndrome to receive the CETP inhibitor dalcetrapib, at a dose of 600 mg daily, or placebo, in addition to the best available evidencebased care. The primary efficacy end point was a composite of death from coronary heart disease, nonfatal myocardial infarction, ischemic stroke, unstable angina, or cardiac arrest with resuscitation. RESULTS: At the time of randomization, the mean HDL cholesterol level was 42 mg per deciliter (1.1 mmol per liter), and the mean low-density lipoprotein (LDL) cholesterol level was 76 mg per deciliter (2.0 mmol per liter). Over the course of the trial, HDL cholesterol levels increased from baseline by 4 to 11% in the placebo group and by 31 to 40% in the dalcetrapib group. Dalcetrapib had a minimal effect on LDL cholesterol levels. Patients were followed for a median of 31 months. At a prespecified interim analysis that included 1135 primary end-point events (71% of the projected total number), the independent data and safety monitoring board recommended termination of the trial for futility. As compared with placebo, dalcetrapib did not alter the risk of the primary end point (cumulative event rate, 8.0% and 8.3%, respectively; hazard ratio with dalcetrapib, 1.04; 95% confidence interval, 0.93 to 1.16; P=0.52) and did not have a significant effect on any component of the primary end point or total mortality. The median C-reactive protein level was 0.2 mg per liter higher and the mean systolic blood pressure was 0.6 mm Hg higher with dalcetrapib as compared with placebo (P<0.001 for both comparisons). CONCLUSIONS: In patients who had had a recent acute coronary syndrome, dalcetrapib increased HDL cholesterol levels but did not reduce the risk of recurrent cardiovascular events. (Funded by F. Hoffmann-La Roche; dal-OUTCOMES ClinicalTrials.gov number, NCT00658515.). Cardiorenal end points in a trial of aliskiren for type 2 diabetes. Parving HH, Brenner BM, McMurray JJ, de Zeeuw D, Haffner SM, Solomon SD, Chaturvedi N, Persson F, Desai AS, Nicolaides M, Richard A, Xiang Z, Brunel P, Pfeffer MA; ALTITUDE Investigators. N Engl J Med. 2012 Dec 6;367(23):2204-13. Collaborators (817) Lok D Author information Department of Medical Endocrinology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. hhparving@dadlnet.dk Abstract BACKGROUND: This study was undertaken to determine whether use of the direct renin inhibitor aliskiren would reduce cardiovascular and renal events Wetenschappelijk overzicht 2012 - 2013 20 21 Wetenschappelijk overzicht 2012 - 2013 Cardiologie Cardiologie in patients with type 2 diabetes and chronic kidney disease, cardiovascular disease, or both. METHODS: In a double-blind fashion, we randomly assigned 8561 patients to aliskiren (300 mg daily) or placebo as an adjunct to an angiotensinconverting-enzyme inhibitor or an angiotensin-receptor blocker. The primary end point was a composite of the time to cardiovascular death or a first occurrence of cardiac arrest with resuscitation; nonfatal myocardial infarction; nonfatal stroke; unplanned hospitalization for heart failure; end-stage renal disease, death attributable to kidney failure, or the need for renalreplacement therapy with no dialysis or transplantation available or initiated; or doubling of the baseline serum creatinine level. RESULTS: The trial was stopped prematurely after the second interim efficacy analysis. After a median follow-up of 32.9 months, the primary end point had occurred in 783 patients (18.3%) assigned to aliskiren as compared with 732 (17.1%) assigned to placebo (hazard ratio, 1.08; 95% confidence interval [CI], 0.98 to 1.20; P=0.12). Effects on secondary renal end points were similar. Systolic and diastolic blood pressures were lower with aliskiren (between-group differences, 1.3 and 0.6 mm Hg, respectively) and the mean reduction in the urinary albumin-to-creatinine ratio was greater (betweengroup difference, 14 percentage points; 95% CI, 11 to 17). The proportion of patients with hyperkalemia (serum potassium level, ≥6 mmol per liter) was significantly higher in the aliskiren group than in the placebo group (11.2% vs. 7.2%), as was the proportion with reported hypotension (12.1% vs. 8.3%) (P<0.001 for both comparisons). CONCLUSIONS: The addition of aliskiren to standard therapy with reninangiotensin system blockade in patients with type 2 diabetes who are at high risk for cardiovascular and renal events is not supported by these data and may even be harmful. (Funded by Novartis; ALTITUDE ClinicalTrials.gov number, NCT00549757.). Subclinical atrial fibrillation and the risk of stroke. Healey JS, Connolly SJ, Gold MR, Israel CW, Van Gelder IC, Capucci A, Lau CP, Fain E, Yang S, Bailleul C, Morillo CA, Carlson M, Themeles E, Kaufman ES, Hohnloser SH; ASSERT Investigators. N Engl J Med. 2012 Jan 12;366(2):120-9. Collaborators (328) Tuininga YS Author information Population Health Research Institute, McMaster University, Hamilton, ON, Canada. Abstract BACKGROUND: One quarter of strokes are of unknown cause, and subclinical atrial fibrillation may be a common etiologic factor. Pacemakers can detect subclinical episodes of rapid atrial rate, which correlate with electrocardiographically documented atrial fibrillation. We evaluated whether subclinical episodes of rapid atrial rate detected by implanted devices were associated with an increased risk of ischemic stroke in patients who did not have other evidence of atrial fibrillation. METHODS: We enrolled 2580 patients, 65 years of age or older, with hypertension and no history of atrial fibrillation, in whom a pacemaker or defibrillator had recently been implanted. We monitored the patients for 3 months to detect subclinical atrial tachyarrhythmias (episodes of atrial rate >190 beats per minute for more than 6 minutes) and followed them for a mean of 2.5 years for the primary outcome of ischemic stroke or systemic embolism. Patients with pacemakers were randomly assigned to receive or not to receive continuous atrial overdrive pacing. RESULTS: By 3 months, subclinical atrial tachyarrhythmias detected by implanted devices had occurred in 261 patients (10.1%). Subclinical atrial tachyarrhythmias were associated with an increased risk of clinical atrial fibrillation (hazard ratio, 5.56; 95% confidence interval [CI], 3.78 to 8.17; P<0.001) and of ischemic stroke or systemic embolism (hazard ratio, 2.49; 95% CI, 1.28 to 4.85; P=0.007). Of 51 patients who had a primary outcome event, 11 had had subclinical atrial tachyarrhythmias detected by 3 months, and none had had clinical atrial fibrillation by 3 months. The population attributable risk of stroke or systemic embolism associated with subclinical atrial tachyarrhythmias was 13%. Subclinical atrial tachyarrhythmias remained predictive of the primary outcome after adjustment for predictors of stroke (hazard ratio, 2.50; 95% CI, 1.28 to 4.89; P=0.008). Continuous atrial overdrive pacing did not prevent atrial fibrillation. CONCLUSIONS: Subclinical atrial tachyarrhythmias, without clinical atrial fibrillation, occurred frequently in patients with pacemakers and were associated with a significantly increased risk of ischemic stroke or systemic embolism. (Funded by St. Jude Medical; ASSERT ClinicalTrials.gov number, NCT00256152.). Voordrachten Resultaten van DEAL-HF studie op lange termijn. Pruijsers-Lamers PH Najaarscongres NVVC Arnhem, 1 november 2013 Early or late intervention in high-risk NSTE-ACS patients: results of the ELISA-3 trial. Badings AE, The SH, Dambrink JH, Van Wijngaarden J, Tjeerdsma G, Rasoul S, Timmer JR, Van der Wielen ML, Lok DJ, Van ’t Hof AW Euro PCR Parijs, 23 mei 2013 Posters Delayed enhancement versus first-pass perfusion imaging at rest Swart LE, Koster K, Jaspers MMJJR, Van Wijngaarden J, Uijlings R, Badings E, Martens FMAC 99th Scientific Assembly and Annual Meeting of the Radiological Society of North America Chicago USA, 5 dec 2013 Long term results of the DEAL-HF (Deventer-Alkmaar Heart Failure study) after 7-11 year. Pruijsers-Lamers PH, Van Wijngaarden J, Badings E Euro Heart Care 2013 Glasgow, 22 maart 2013 Promotie Novel markers in chronic heart failure / Dirk Jan Arend Lok Rijksuniversiteit Groningen, 22 mei 2013 Cardiologie Cardiologie Wetenschappelijk overzicht 2012 - 2013 22 23 Wetenschappelijk overzicht 2012 - 2013 Dermatologie [A contractor with damaged knees]. [Article in Dutch] van Laarhoven S, Roerdink WH, van Ginkel CJ. Ned Tijdschr Geneeskd. 2012;156(47):A4561. Source Deventer Ziekenhuis, Deventer, Afd. Heelkunde, the Netherlands. Abstract Zie Heelkunde Publicaties The first case record of a female patient with buboniclymphogranuloma venereum (LGV), serovariant L2b Stephan P Verweij, Sander Ouburg, Harry de Vries, Servaas A Morre´, Cees J W van Ginkel, Hanna Bos, Fré W Sebens Sex Transm Infect 2012;88(5):346-7. Abstract Since 2003, a lymphogranuloma venereum epidemic has been reported in The Netherlands and other European countries. This epidemic is caused by Chlamydia trachomatis serovariant L2b and has only been seen in men having sex with men. The authors investigated a woman presenting with a bubo in her right groin. The authors showed by real-time PCR that the woman was infected with C trachomatis, serovariant L2b. This is the first reported case study of a female patient with bubonic lymphogranuloma venereum caused by serovariant L2b, which was probably contracted via her bisexual male partner. A randomised trial of honey barrier cream versus zinc oxide ointment. Nijhuis WA, Houwing RH, Van der Zwet WC, Jansman FG. Br J Nurs. 2012 Nov 8-21;21(20):9-10, 12-3. Author information Ziekenhis Gelderse Vallei Ede, University Groningen, Department of Pharmacotherapy and Pharmaceutical Care, Groningen, The Netherlands. Abstract In this single-blind multicentre, intervention study, 31 patients with symmetrical intertrigo in large skin folds were included to study the clinical effect of two topical treatments, i.e. standard therapy with zinc oxide ointment versus honey barrier cream. Patients were treated twice daily for 21 days, and the severity of intertrigo was scored in an observation period of 21 days. Patients were used as their own controls by treating symmetrical skin folds, on the left and right side. There was no significant difference in treatment effect between intervention groups. For the majority of patients, both treatments were effective. However, the use of honey barrier cream showed lower pruritus complaints (12.9% versus 29.0%). Honey barrier cream is a suitable alternative in the treatment of intertrigo, and promotes patient comfort. A case of occupational airborne allergic contact dermatitis caused by faveira amargosa, a tropical timber. Kop EN, van Ginkel CJ, Röckmann H, van der Valk PG. Contact Dermatitis. 2012 Jun;66(6):344-5. Author information Department of Dermatology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. Opbrengst van een drempelloze “check-je-vlekje” dag. Jongeneel E, Van Ginkel CJW Ned T Derm Ven. 2012;22:414-7. Wetenschappelijk overzicht 2012 - 2013 SCEN-arts en dermatoloog: Een verrijkende combinatie. Houwing RH Ned T Derm Ven. 2013;23(4):249-1. Een acneiforme dermatitis door vitamine B12. Van Jarwaarde JA, Houwing RH Ned T Derm Ven. 2013;23(7):375-6. Een peuter met één dik oor. Mandigers LCJM, Bom SJH, Dassel ACM, Houwing RH, Van Ginkel CJW 24 25 Wetenschappelijk overzicht 2012 - 2013 Dermatologie Dermatologie [A newborn with an acute itchy skin rash]. [Article in Dutch] Hartmans E, Houwing RH. Ned Tijdschr Geneeskd. 2012;156(48):A4519. Source Deventer Ziekenhuis, afd. Dermatologie, Deventer, the Netherlands. Abstract A 36-week-old girl presented with an itching papulous skin eruption symmetrically on her cheeks, buttocks and limbs. Based on the specific clinical presentation she was diagnosed with Gianotti-Crosti-syndrome. This is a self-limiting cutaneous response to a viral infection. Ned Tijdschr KNO-heelkunde 2013;19:115-6 serve as an outcome measure in future studies and a relevant point of intervention for individual patients. Myeloid marker S100A8/A9 and lymphocyte marker, soluble interleukin 2 receptor: biomarkers of hidradenitis suppurativa disease activity? Wieland CW, Vogl T, Ordelman A, Vloedgraven HG, Verwoolde LH, Rensen JM, Roth J, Boer J, Hessels J. Br J Dermatol. 2013 Jun;168(6):1252-8. Author information Laboratory for Clinical Chemistry, Deventer Hospital, PO box 5001, 7400 GC Deventer, The Netherlands. Abstract : zie Klinische Chemie Depression in patients with hidradenitis suppurativa. Onderdijk AJ, van der Zee HH, Esmann S, Lophaven S, Dufour DN, Jemec GB, Boer J. J Eur Acad Dermatol Venereol. 2013 Apr;27(4):473-8. Source Department of Dermatology, Deventer Hospital, Rotterdam, Netherlands. Abstract BACKGROUND: Hidradenitis suppurativa (HS) is a chronic recurrent inflammatory skin disease with abscess formation and scarring predominantly in the inverse areas. The disease is often difficult to treat and patients experience a decreased quality of life (QoL). It is hypothesized that depression is more common in HS patients than among other dermatological patients. OBJECTIVES: To evaluate the prevalence of depression in patients with HS. METHODS: In total 211 HS patients were included in the study and 233 were dermatological control patients. Their QoL and depression scores were assessed using the Dermatology Life Quality Index (DLQI) and the Major Depression Inventory (MDI) questionnaires. HS severity was recorded with a questionnaire and Hurley stages were extracted from the case records. RESULTS: The DLQI was significantly higher for HS patients than for the control patients, 8.4 ± 7.5 vs. 4.3 ± 5.6 (P < 0.0001) and correlated with Hurley stage severity scores. Mean MDI scores were significantly higher for HS patients, 11.0 vs. 7.2 (P < 0.0001). However, clinically defined depression rates according to the International Classification of Diseases, 10th edition (ICD-10) criteria were not significantly higher in HS patients compared to controls (9% vs. 6%). CONCLUSIONS: HS is a chronic skin disease with major impact on QoL even when compared to other dermatological diseases. MDI scores in HS patients correlate with disease severity. This correlation could indicate that the MDI represents a valid measure of disease related morbidity that may Results of a cosmetovigilance survey in The Netherlands. Salverda JG, Bragt PJ, de Wit-Bos L, Rustemeyer T, Coenraads PJ, Tupker RA, Kunkeler LC, Laheij-de Boer AM, Stenveld HJ, van Ginkel CJ, Kooi MW, Bourgeois FC, van Gorcum TF, van Engelen JG, van Dijk R, de Graaf J, Donker GA, de Heer C, Bruynzeel D. Contact Dermatitis. 2013 Mar;68(3):139-48. Author information Centre for Substances and Integrated Risk Assessment (SIR), National Institute for Public Health and the Environment (RIVM), 3720 BA Bilthoven, The Netherlands. Abstract BACKGROUND: Cosmetic products contribute considerably to the incidence of contact dermatitis. In response to a resolution of the Council of Europe, the National Institute for Public Health and the Environment (RIVM) in The Netherlands set up a pilot project to report undesirable effects attributed to cosmetic products. OBJECTIVES: To provide an overview of undesirable effects attributed to cosmetic products and to identify the ingredients involved. The information could contribute to the assessment of whether current EU legislation on cosmetics provides adequate protection. PATIENTS/METHODS: General practitioners, dermatologists and consumers in The Netherlands completed questionnaires on reported undesirable effects of cosmetics. Dermatologists also carried out patch tests and, where necessary, tests with specific batch ingredients of the associated cosmetic product. A website and a public awareness campaign were launched to encourage consumers to report undesirable effects. RESULTS: Between July 2009 and May 2011, the RIVM received more than 1600 reports. Severe undesirable effects were claimed in 1-4% of the cases. The most frequently reported cosmetic products were make-up and moisturi- Wetenschappelijk overzicht 2012 - 2013 26 27 Wetenschappelijk overzicht 2012 - 2013 Dermatologie Dermatologie Zout op je huid, ach wat zou ‘t! Sillevis Smitt JH, Boer J, Van Everdingen JJE Ned T Derm Ven. 2013;23(6):335. Samenvatting Zout is door de eeuwen heen een belangrijke stof geweest. De rol van zout is voor de dermatoloog langzaam maar zeker van minder groot belang geworden. Momenteel lijkt zout met name zinnig in de dermatologie door het bescheiden additieve effect bij de behandeling van atopisch eczeem en psoriasis met UV-therapie. Ook kan intralesionale injectie met een zoutoplossing mogelijk soelaas bieden bij de behandeling van corticosteroïdatrofie. Gynaecologie sers, and the most frequently identified allergens were isothiazolinones and fragrance ingredients. Three patients tested positive for co-polymers/crosspolymers. CONCLUSIONS: Further investigations are recommended on the prevalence of isothiazolinone-induced allergic contact dermatitis and the allergenic potential of co-polymers/cross-polymers. Publicaties Voordrachten Therapy for moderate hidradenitis suppurativa with deroofing and topical resorcinol. Boer J Société Bruxelloise de Dermatologie Brussel, België, 7 februari 2013 Boek(bijdrage) Het Geriatrie Formularium 3e ed. Redactie: P.A.F. Jansen, J. van der Laan, J. Schols Hoofdstuk: Decubitus R.H. Houwing Bohn Stafleu Van Loghum, 2012 ISBN: 9789031392643 Wetenschappelijke stage A retrospective study on the clinical course of hidradenitis suppurativa. Auteur : I. Deckers Begeleider: J. Boer E.P. Prens Periode : maart – augustus 2013 Dermatologie Wetenschappelijk overzicht 2012 - 2013 28 29 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Prediction of recurrence of hypertensive disorders of pregnancy between 34 and 37 weeks of gestation: a retrospective cohort study. van Oostwaard M, Langenveld J, Bijloo R, Wong K, Scholten I, Loix S, Hukkelhoven C, Vergouwe Y, Papatsonis D, Mol B, Ganzevoort W. BJOG. 2012 Jun;119(7):840-7. Source Department of Obstetrics and Gynaecology, Erasmus Medical Centre, Rotterdam, the Netherlands Department of Obstetrics and Gynaecology, Maastricht University Medical Centre, Maastricht, the Netherlands Department of Obstetrics and Gynaecology, Academic Medical Centre, Amsterdam, the Netherlands Department of Obstetrics and Gynaecology Deventer Hospital, Deventer, the Netherlands Department of Obstetrics and Gynaecology, Kennemer Gasthuis, Haarlem, the Netherlands Department of Obstetrics and Gynaecology, Maxima Medical Centre, Veldhoven, the Netherlands The Netherlands Perinatal Registry, Utrecht, the Netherlands Department of Public Health, Erasmus Medical Centre, Rotterdam, the Netherlands Department of Obstetrics and Gynaecology, Amphia Hospital, Breda, the Netherlands. Abstract OBJECTIVE: To assess the recurrence risk of late-preterm hypertensive disease of pregnancy, and to determine whether potential risk factors are predictive. Design Retrospective cohort study. Setting Three secondary and three tertiary care hospitals in the Netherlands. Population We identified women with a hypertensive disorder in the index pregnancy and delivery at 34-37 weeks of gestation, between January 2000 and December 2002. METHODS: Data were extracted from medical files and women were approached for additional information on subsequent pregnancies. An adverse outcome was defined as the recurrence of a hypertensive disorder in the next subsequent pregnancy. Main outcome measures Absolute risk of recurrence and a prediction model containing demographic and clinical factors predictive for adverse outcome. RESULTS: We identified 425 women who matched the criteria, of whom 351 could be contacted. Of these women, 189 (54%) had had a subsequent pregnancy. Hypertensive disorders recurred in 96 (51%, 95% CI 43-58%) women, of whom 17 (9%, 95% CI 5-14%) delivered again before 37 weeks of gestation. Chronic hypertension and maternal age were the strongest predictors for recurrence. Women undergoing recurrence had a nine-fold chance of developing chronic hypertension (37% versus 6%, OR 8.7, 95% CI 3.3-23). CONCLUSIONS: Women with hypertensive disorders and late-preterm delivery have a 50% chance of recurrence, but only a 9% chance of recurrence resulting in delivery before 37 weeks of gestation. Women with chronic hypertension are prone to develop recurrence, and women with a recurrence more often developed chronic hypertension. Author information Academic Medical Centre, Amsterdam, the Netherlands. Abstract OBJECTIVE: To examine whether cervical favourability (measured by cervical length and the Bishop score) should inform obstetricians’ decision regarding labour induction for women with gestational hypertension or mild pre-eclampsia at term. DESIGN: A post hoc analysis of the Hypertension and Pre-eclampsia Intervention Trial At Term (HYPITAT). SETTING: Obstetric departments of six university and 32 teaching and district hospitals in the Netherlands. POPULATION: A total of 756 women diagnosed with gestational hypertension or pre-eclampsia between 36 + 0 and 41 + 0 weeks of gestation randomly allocated to induction of labour or expectant management. METHODS: Data were analysed using logistic regression modelling. MAIN OUTCOME MEASURES: The occurrence of a high-risk maternal situation defined as either maternal complications or progression to severe disease. Secondary outcomes were caesarean delivery and adverse neonatal outcomes. RESULTS: The superiority of labour induction in preventing high-risk situations in women with gestational hypertension or mild pre-eclampsia at term varied significantly according to cervical favourability. In women who were managed expectantly, the longer the cervix the higher the risk of developing maternal high-risk situations, whereas in women in whom labour was induced, cervical length was not associated with a higher probability of maternal high-risk situations (test of interaction P = 0.03). Similarly, the beneficial effect of labour induction on reducing the caesarean section rate was stronger in women with an unfavourable cervix. CONCLUSION: Against widely held opinion, our exploratory analysis showed that women with gestational hypertension or mild pre-eclampsia at term who have an unfavourable cervix benefited more from labour induction than other women. TRIAL REGISTRATION: The trial has been registered in the clinical trial register as ISRCTN08132825. Size and volume charts of fetal kidney, renal pelvis and adrenal gland. van Vuuren SH, Damen-Elias HA, Stigter RH, van der Doef R, Goldschmeding R, de Jong TP, Westers P, Visser GH, Pistorius LR. Ultrasound Obstet Gynecol. 2012 Dec;40(6):659-64. Author information Department of Pathology, University Medical Centre Utrecht, Utrecht, The Netherlands. Abstract OBJECTIVE: To establish reference curves for size and volume of the fetal kidney, renal pelvis and adrenal gland, as measured using ultrasound from the 15(th) week of gestation. METHODS: This was a prospective, longitudinal study of 96 fetuses in low-risk singleton pregnancies, in which we performed serial ultrasound examinations at 4-week intervals. The length and anteroposterior and transverse diameters of both kidneys, the anteroposterior and transverse diameters of the renal pelvises and the length of the adrenal glands were measured three times at each examination, with the average being used for further analysis. Reference charts were constructed using multilevel statistical analysis and comparisons were made with previously published charts derived from cross-sectional data. RESULTS: We present nomograms for fetal kidney dimensions and volume, renal pelvis dimensions and adrenal gland length. The new charts show differences in shape and have narrower percentile bands in comparison to previously published reference ranges. CONCLUSIONS: These new charts of measurements of the fetal kidney, renal pelvis and adrenal gland, from a prospective, longitudinal study, may be useful in the diagnosis and assessment of pathology of the kidney and adrenal gland. Wetenschappelijk overzicht 2012 - 2013 Integration of patient characteristics and the results of Chlamydia antibody testing and hysterosalpingography in the diagnosis of tubal pathology: an individual patient data meta-analysis. Broeze KA, Opmeer BC, Coppus SF, Van Geloven N, Den Hartog JE, Land JA, Van der Linden PJ, Ng EH, Van der Steeg JW, Steures P, Van der Veen F, Mol BW. Hum Reprod. 2012 Oct;27(10):2979-90. 30 31 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Should cervical favourability play a role in the decision for labour induction in gestational hypertension or mild pre-eclampsia at term? An exploratory analysis of the HYPITAT trial. Tajik P, van der Tuuk K, Koopmans CM, Groen H, van Pampus MG, van der Berg PP, van der Post JA, van Loon AJ, de Groot CJ, Kwee A, Huisjes AJ, van Beek E, Papatsonis DN, Bloemenkamp KW, van Unnik GA, Porath M, Rijnders RJ, Stigter RH, de Boer K, Scheepers HC, Zwinderman AH, Bossuyt PM, Mol BW. BJOG. 2012 Aug;119(9):1123-30. Author information Center for Reproductive Medicine, Department of Obstetrics and Gynaecology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. Abstract BACKGROUND: Tubal patency tests are routinely performed in the diagnostic work-up of subfertile patients, but it is unknown whether these diagnostic tests add value beyond the information obtained by medical history taking and findings at physical examination. We used individual patient data metaanalysis to assess this question. METHODS: We approached authors of primary studies for data sets containing information on patient characteristics and results from tubal patency tests, such as Chlamydia antibody test (CAT), hysterosalpingography (HSG) and laparoscopy. We used logistic regression to create models that predict tubal pathology from medical history and physical examination alone, as well as models in which the results of tubal patency tests are integrated in the patient characteristics model. Laparoscopy was considered to be the reference test. RESULTS: We obtained data from four studies reporting on 4883 women. The duration of subfertility, number of previous pregnancies and a history of previous pelvic inflammatory disease (PID), pelvic surgery or Chlamydia infection qualified for the patient characteristics model. This model showed an area under the receiver operating characteristic curve (AUC) of 0.63 [95% confidence interval (CI) 0.61-0.65]. For any tubal pathology, the addition of HSG significantly improved the predictive performance to an AUC of 0.74 (95% CI 0.73-0.76) (P < 0.001). For bilateral tubal pathology, the addition of both CAT and HSG increased the predictive performance to an AUC of 0.76 (95% CI 0.74-0.79). CONCLUSIONS: In the work-up for subfertile couples, the combination of patient characteristics with CAT and HSG results gives the best diagnostic performance for the diagnosis of bilateral tubal pathology. to meningitis in the Netherlands, and to assess clinical features and risk factors. DESIGN: Confidential enquiry into the causes of maternal deaths. SETTING: Nationwide in the Netherlands. POPULATION: A total of 4 784 408 live births. METHODS: Analysis of all maternal deaths due to meningitis in pregnancy and puerperium from 1983 up to and including 2007 reported to the Maternal Mortality Committee of the Dutch Society of Obstetrics and Gynaecology. MAIN OUTCOME MEASURES: Incidence, clinical features and risk factors. RESULTS: Fifteen maternal deaths occurred due to meningitis, representing 4.4% of all maternal deaths. Twelve women (80%) presented with meningitis during pregnancy, 8 (66%) of them in the third trimester. Presenting symptoms were altered mental status (11; 73%), fever (9; 60%), nuchal rigidity (5; 33%) and headache (13; 87%). Nine women (60%) had otolaryngological infection at presentation or in the previous days or weeks. Twelve women (80%) underwent radiological examination, of which 5 (33%) showed distinct abnormalities. Cerebrospinal fluid (CSF) examination showed infected CSF in 8 (53%) women. In ten women (67%) Streptococcus pneumoniae was isolated. Substandard care was identified in 4 (27%) women. CONCLUSION: Pregnant or puerperal women presenting with classical symptoms of meningitis, particularly those with a history of otolaryngological infection or headache, should undergo thorough investigation and radiological and CSF examinations. Early diagnosis and immediate antibiotic treatment are imperative because of rapid deterioration in pregnant women. In case of doubt, the threshold for antibiotic treatment should be low and close monitoring is warranted. Fatal meningitis during pregnancy in the Netherlands: a nationwide confidential enquiry. Schaap TP, Schutte JM, Zwart JJ, Schuitemaker NW, van Roosmalen J; Dutch Maternal Mortality Committee. BJOG. 2012 Dec;119(13):1558-63. Author information Department of Obstetrics and Gynaecology, University Medical Centre Utrecht, the Netherlands. Abstract OBJECTIVE: To determine the incidence of maternal deaths attributable Wetenschappelijk overzicht 2012 - 2013 32 33 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Amniotic fluid embolism incidence, risk factors and outcomes: a review and recommendations. Knight M, Berg C, Brocklehurst P, Kramer M, Lewis G, Oats J, Roberts CL, Spong C, Sullivan E, van Roosmalen J, Zwart J. BMC Pregnancy Childbirth. 2012 Feb 10;12:7. Author information National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK. Abstract BACKGROUND: Amniotic fluid embolism (AFE) is a rare but severe complication of pregnancy. A recent systematic review highlighted apparent differences in the incidence, with studies estimating the incidence of AFE to be more than three times higher in North America than Europe. The aim of this study was to examine population-based regional or national data from five high-resource countries in order to investigate incidence, risk factors and outcomes of AFE and to investigate whether any variation identified could be ascribed to methodological differences between the studies. METHODS: We reviewed available data sources on the incidence of AFE in Australia, Canada, the Netherlands, the United Kingdom and the USA. Where information was available, the risk factors and outcomes of AFE were examined. RESULTS: The reported incidence of AFE ranged from 1.9 cases per 100 000 maternities (UK) to 6.1 per 100 000 maternities (Australia). There was a clear distinction between rates estimated using different methodologies. The lowest estimated incidence rates were obtained through validated case identification (range 1.9-2.5 cases per 100 000 maternities); rates obtained from retrospective analysis of population discharge databases were significantly higher (range 5.5-6.1 per 100 000 admissions with delivery diagnosis). Older maternal age and induction of labour were consistently associated with AFE. CONCLUSIONS: Recommendation 1: Comparisons of AFE incidence estimates should be restricted to studies using similar methodology. The recommended approaches would be either population-based database studies using additional criteria to exclude false positive cases, or tailored data collection using existing specific population-based systems.Recommendation 2: Comparisons of AFE incidence between and within countries would be facilitated by development of an agreed case definition and an agreed set of criteria to minimise inclusion of false positive cases for database studies. Recommendation 3: Groups conducting detailed population-based studies on AFE should develop an agreed strategy to allow combined analysis of data obtained using consistent methodologies in order to identify potentially modifiable risk factors.Recommendation 4: Future specific studies on AFE should aim to collect information on management and longer-term outcomes for both mothers and infants in order to guide best practice, counselling and service planning. amniotic fluid embolism were dyspnea and massive obstetric hemorrhage. In the majority of women, onset of symptoms was intrapartum or immediately postpartum. Potential risk factors of developing amniotic fluid embolism were maternal age >30, multiparity (OR 3.3, 95% CI 1.02-10.5), cesarean section (OR 1.3, 95% CI 0.3-5.2) and induction of labor (OR 2.1, 95% CI 2.1-6.1). Perinatal mortality was increased to 38.1% compared with 0.98% in the general pregnant population (p < 0.001) High maternal age and multiparity are the most important risk factors for developing amniotic fluid embolism. Severe maternal morbidity and mortality from amniotic fluid embolism in the Netherlands. Stolk KH, Zwart JJ, Schutte J, VAN Roosmalen J. Acta Obstet Gynecol Scand. 2012 Aug;91(8):991-5. Author information Leiden University Medical Centre, Department of Obstetrics, Leiden, the Netherlands. Abstract We have assessed the incidence, symptoms and risk factors of amniotic fluid embolism in the Netherlands. Data were retrieved from two nationwide registration systems. From 1983 to 2005 the maternal mortality ratio of amniotic fluid embolism increased from 0.11 to 0.63 (odds ratio (OR) 5.8, 95% confidence interval (CI) 1.3-25.3). The most common signs and symptoms of Wetenschappelijk overzicht 2012 - 2013 34 35 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Severe maternal morbidity in ectopic pregnancy is not associated with maternal factors but may be associated with quality of care. van Mello NM, Zietse CS, Mol F, Zwart JJ, van Roosmalen J, Bloemenkamp KW, Ankum WM, van der Veen F, Mol BW, Hajenius PJ. Fertil Steril. 2012 Mar;97(3):623-9. Author information Department of Obstetrics and Gynecology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands. Abstract OBJECTIVE: To study the association between patient-related risk factors and severe maternal morbidity in women with tubal ectopic pregnancy (EP). Furthermore, to identify substandard care factors in clinical care management of EP. DESIGN: Case-control study. SETTING: Not applicable. PATIENT(S): Case subjects were from the LEMMoN study, a prospective nationwide cohort study. Control subjects were from the ESEP study, an international multicenter randomized controlled trial. INTERVENTION(S): Case subjects were women with tubal EP complicated by severe intra-abdominal hemorrhage necessitating blood transfusion of ≥4 units of packed red blood cells peri- or postoperatively. Control subjects were women with tubal EP who were hemodynamically stable and surgically treated. MAIN OUTCOME MEASURE(S): Patient-related risk factors as: maternal age, gestational age, previous EP, Chlamydia infection, pelvic inflammatory disease, assisted reproductive techniques, and serum hCG level. Substandard care categories classified as unawareness of the clinician, misdiagnosis, and nonadherence to the guideline on EP. RESULT(S): Twenty-nine case subjects and 99 control subjects were included. The mean serum hCG level was significantly higher in case subjects compared with control subjects, but we found no reliable cutoff level of serum hCG to rule out maternal morbidity. Other risk factors did not differ significantly. Substandard care was scored more often in case subjects (43%) than in control subjects (14%), mainly concerning misdiagnosis. CONCLUSION(S): No patient-related risk factors for severe intra-abdominal hemorrhage in women with tubal EP were identified. Our findings underpin the importance of awareness of EP among young fertile women and care providers and clinical care management according to the guidelines to prevent severe maternal morbidity. SETTING: The Netherlands, august 2004 to august 2006. POPULATION: 1567 cases from initially primary care and 2994 women from primary care practices as controls, out of 371 012 women delivering in the Netherlands during the study period. METHODS: Cases were women with SAMM obtained from a nationwide prospective study. All women in this cohort who initially had low-risk pregnancies were compared with low-risk women without SAMM to calculate odd ratios (ORs) to develop SAMM by body mass index (BMI) category. We divided body mass index in three overweight categories and calculated the ORs (95% CI) of total SAMM and per specific endpoint by logistic regression, with normal weight as reference. We adjusted for age, parity and socio-economic status. MAIN OUTCOME MEASURES: SAMM, defined as Intensive Care Unit (ICU)-admission, Uterine Rupture, Eclampsia or Major Obstetric Haemorrhage (MOH). RESULTS: SAMM was reported in 1567 cases which started as low-risk pregnancies. BMI was available in 1097 (70.0%) cases and 2994 control subjects were included. Analysis showed a dose response relation for overweight (aOR, 1.3; 95% CI, 1.0-1.5), obese (aOR, 1.4; 95% CI, 1.1-1.9) and morbidly obese (aOR, 2.1; 95% CI, 1.3-3.2) women to develop SAMM compared to normal weight. Sub analysis showed the same dose response relation for ICU-admission, Uterine Rupture and Eclampsia. We found no association for MOH. CONCLUSION: Overweight without pre-existent co-morbidity is an important risk-indicator for developing SAMM. This risk increases with an increasing body mass index. Tissue composition of the vaginal wall in women with pelvic organ prolapse. Meijerink AM, van Rijssel RH, van der Linden PJ. Gynecol Obstet Invest. 2013;75(1):21-7. Source Department of Gynecology and Obstetrics, Deventer Hospital, Deventer, The Netherlands. Abstract BACKGROUND/AIMS: To determine the composition of the vaginal wall and to explore the connective tissue layer, muscularis and basement membrane in relation to the pathogenesis of pelvic organ prolapse (POP). METHODS: We performed a histopathological study with respect to the composition of the vaginal wall of 33 patients and 9 controls. Tissue samples from the vaginal wall were analysed for collagens II and IV, desmin, elastin, fibronectin, smooth muscle actin (SMA) and transforming growth factor (TGF)-β1 using (immuno)histochemistry. Morphometric analyses were also performed. RESULTS: Morphometric characteristics and expression of SMA, TGF-β1, elastin and collagen II were significantly altered in women with POP. CONCLUSION: Our results suggest that there could be an altered tissue composition of the vaginal wall in women with POP. SMA expression could play a role in the pathogenesis of POP. The alterations in elastin and TGF-β1 expression are likely a result of POP. Overweight and severe acute maternal morbidity in a low-risk pregnant population in the Netherlands. Witteveen T, Zwart JJ, Gast KB, Bloemenkamp KW, van Roosmalen J. PLoS One. 2013 Sep 12;8(9):e74494. Author information Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands. Abstract OBJECTIVE: To investigate the association between overweight and severe acute maternal morbidity (SAMM) in a low-risk pregnant population. DESIGN: Nationwide case-control study. Wetenschappelijk overzicht 2012 - 2013 36 37 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie The clinical benefit of blood transfusion: a hypothetical experiment based on a nationwide survey of severe maternal morbidity. Hendriks J, Zwart JJ, Briët E, Brand A, van Roosmalen J. Vox Sang. 2013 Apr;104(3):234-9. Author information Department of Obstetrics, Leiden University Medical Centre, Leiden, The Netherlands. Abstract BACKGROUND: It is beyond doubt that blood transfusion services have added to the decline in maternal mortality in high-resource countries. To quantify the clinical benefit of red blood cell (RBC) transfusion in obstetric care, we performed a hypothetical experimental study using data from a prospective nationwide cohort of women giving birth in the Netherlands. STUDY DESIGN AND METHODS: Data were abstracted from a nationwide cohort study on severe maternal morbidity, including obstetric haemorrhage requiring 4 or more units of RBC, to obtain an observed and a hypothetical control group consisting of the same women. In the hypothetical control group, we simulated a situation where RBC transfusion was unavailable and estimated how many of these women would have died in that situation. A questionnaire survey asked experts in major (obstetric) haemorrhage to choose a critical minimal number of RBC transfusions at which a woman with obstetric haemorrhage would have died if RBC transfusion was not available. Maternal mortality rate per 100,000 maternities [maternal mortality ratios (MMR)] and relative risk were calculated for the observed and hypothetical group. ReSULTS: The observed MMR was 13 per 100,000 maternities. According to 47 responding experts, the median number of RBC units without which a woman would have most probably died was nine, resulting in a hypothetical MMR of 87 per 100,000 maternities (relative risk 6·5; 95% confidence interval 4·2-10·0). CONCLUSIONS: It can be expected that unavailability of RBC transfusion in obstetric care increases the risk of maternal death 6.5-fold. Blood transfusion thus largely contributes to the decline of MMR and would also be an important pillar of improving quality of care in resource-poor settings. METHODS: We performed a cross-sectional study. Three Dutch fertility clinics (2 IVF-licensed) offered their patients a secure online clinical health community through which clinicians can provide online information and patients can ask questions to the medical team or share experiences and find support from peers. We randomly selected and invited 278 men and women suffering from infertility and attending 1 of the participating clinics. Participants filled out a questionnaire about their background characteristics and current use of the online community. Possible barriers and facilitators were divided into 2 parts: (1) those for subscription to the community, and (2) those for active participation in the community. We performed 2 multivariate logistic regression analyses to calculate determinants for both subscription and active participation. RESULTS: Subscription appeared to be associated with patients’ background characteristics (eg, gender, treatment phase), intervention-related facilitators (odds ratio [OR] 2.45, 95% CI 1.14-5.27), and patient-related barriers (OR 0.20, 95% CI 0.08-0.54), such as not feeling the need for such an online health community. After subscription, determinants for participation consisted of aspects related to participant’s age (OR 0.86, 95% CI 0.760.97), length of infertility (OR 1.48, 05% CI 1.09-2.02), and to intervention-related facilitators (OR 5.79, 95% CI 2.40-13.98), such as its reliable character and possibility to interact with the medical team and peers. CONCLUSIONS: Implementing an online health community in addition to usual fertility care should be performed stepwise. At least 2 strategies are needed to increase the proportion of patient subscribers and consequently make them active participants. First, the marketing strategy should contain information tailored to different subgroups of the patient population. Second, for a living online health community, incorporation of interactive elements, as well as frequent news and updates are needed. These results imply that involving patients and their needs into the promotion strategy, community’s design, and implementation are crucial. Wetenschappelijk overzicht 2012 - 2013 Postmenopausal bleeding and corticosteroids. Klomp HA, van der Linden PJ. Gynecol Obstet Invest. 2013;76(4):260. Author information Department of Gynecology and Obstetrics, Deventer Ziekenhuis, Deventer, The Netherlands. Perinatale sterftecijfers geven geen aanleiding tot onomkeerbare organisatorische ingrepen in het verloskundig zorgsysteem. Van der Leeuw-Harmsen L, Schaaf H Medisch Contact 2013;68(5):252-4 38 39 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Barriers and facilitators for the implementation of an online clinical health community in addition to usual fertility care: a cross-sectional study. Aarts JW, Faber MJ, den Boogert AG, Cohlen BJ, van der Linden PJ, Kremer JA, Nelen WL. J Med Internet Res. 2013 Aug 30;15(8):e163. Author information Department of Obstetrics and Gynecology, Radboud University Nijmegen Medical Center, Radboud University, Nijmegen, Netherlands. Abstract BACKGROUND: Online health communities are becoming more popular in health care. Patients and professionals can communicate with one another online, patients can find peer support, and professionals can use it as an additional information channel to their patients. However, the implementation of online health communities into daily practice is challenging. These challenges relate to the fact that patients need to be activated to (1) become a member (ie, subscription) and (2) participate actively within the community before any effect can be expected. Therefore, we aimed at answering 2 research questions: (1) what factors are associated with subscription to an online health community, and (2) which are associated with becoming an active participant within an online health community. OBJECTIVE: To identify barriers and facilitators as perceived by patients for the implementation of an online health community. The prevalence, potential risk factors for development and symptoms related to the presence of uterine niches following Cesarean section: a systematic review. Bij de Vaate AJ, van der Voet LF, Naji O, Witmer M, Veersema S, Brölmann HA, Bourne T, Huirne JA. Ultrasound Obstet Gynecol. 2013 Aug 30. [Epub ahead of print] Author information Department of Obstetrics and Gynaecology, VU University Medical Center, Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands. Abstract OBJECTIVE: To systematically review the medical literature reporting on the prevalence of a niche using various diagnostic methods, on potential risk factors for the development of a niche and on niche-related gynecological symptoms in non-pregnant women. METHODS: The databases Medline and Embase were searched. All types of clinical studies reporting on the prevalence, risk factors and/or symptoms of a niche in non-pregnant women with a history of Cesarean section (CS) were included. Case reports or case series were excluded. RESULTS: We selected 21 papers. A wide range in the prevalence of a niche was found. Using sonohysterography (SHG) in a random population of women with a history of CS, the prevalence varied between 56% and 84%. Nine studies reported on risk factors and each study evaluated different factors, which made it difficult to compare studies. Risk factors can be categorized into four categories: factors related to closure technique, development of the lower uterine segment or localization of the incision, wound healing and miscellaneous factors. Probable risk factors are single-layer myometrium closure, multiple CSs and uterine retroflexion. Six out of eight studies described an association between the presence of a niche and postmenstrual spotting. CONCLUSIONS: The reported prevalence of a niche in non-pregnant women varies depending on the method of detection, the criteria used to define a niche and the study population. Potential risk factors can be categorized in four main categories, which may be useful for future research and meta-analyses. The predominant symptom associated with a niche is postmenstrual spotting. BS, van Kesteren PJ, Langenveld J, Smeets NA, van Vliet HA, van der Steeg JW, Leeuwen YL, Dekker JH, Mol BW, Berger MY, Bongers MY. BMC Womens Health. 2013 Aug 8;13(1):32. Abstract BACKGROUND: Heavy menstrual bleeding is an important health problem. Two frequently used therapies are the levonorgestrel intra-uterine system (LNG-IUS) and endometrial ablation. The LNG-IUS can be applied easily by the general practitioner, which saves costs, but has considerable failure rates. As an alternative, endometrial ablation is also very effective, but this treatment has to be performed by a gynaecologist. Due to lack of direct comparison of LNG-IUS with endometrial ablation, there is no evidence based preferred advice for the use of one of these treatment possibilities.Method/designA multicenter randomised controlled trial, organized in a network infrastructure in the Netherlands in which general practitioners and gynaecologists collaborate.Women >= 34 years with heavy menstrual bleeding, a Pictorial Blood Assessment Chart (PBAC) score exceeding 150 points and no future child wish can participate in the trial. After informed consent, women will be randomised to a strategy starting with a levonorgestrel releasing intrauterine system or a strategy starting with endometrial ablation.The primary outcome is the PBAC score at 24 months of follow-up. Secondary outcomes are patient satisfaction, complications, number of re-interventions, menstrual bleeding pattern, quality of life, sexual function, sick leave and costs. As predictors of effect of intervention we also meaure level of coagulation factors.DiscussonThis study, considering both effectiveness and cost effectiveness of LNG-IUS versus endometrial ablation may well improve care for women with heavy menstrual bleeding.Trial registrationDutch trial register, number NTR2984. Levonorgestrel releasing intrauterine system (Mirena) versus endometrial ablation (Novasure) in women with heavy menstrual bleeding: a multicentre randomised controlled trial. Herman MC, van den Brink MJ, Geomini PM, van Meurs HS, Huirne JA, Eising HP, Timmermans A, Pijnenborg J, Klinkert ER, Coppus SF, Nieboer T, Catshoek R, van der Voet LF, van Eijndhoven HW, Graziosi G, Veersema Wetenschappelijk overzicht 2012 - 2013 40 41 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Surgical versus expectant management in women with an incomplete evacuation of the uterus after treatment with misoprostol for miscarriage: the MisoREST trial. Verschoor MA, Lemmers M, Bossuyt PM, Graziosi GC, Hajenius PJ, Hendriks DJ, van Hooff MA, van Meurs HS, Opmeer BC, van Tulder MW, Bouwma L, Catshoek R, Geomini P, Klinkert ER, Langenveld J, Nieboer TE, van der Ploeg JM, Radder CM, Spinder T, van der Voet LF, Mol BW, Huirne JA, Ankum WM. BMC Pregnancy Childbirth. 2013 May 2;13:102. Author information Department of Obstetrics and Gynaecology, Academic Medical Centre, Amsterdam, The Netherlands. Abstract BACKGROUND: Medical treatment with misoprostol is a non-invasive and inexpensive treatment option in first trimester miscarriage. However, about 30% of women treated with misoprostol have incomplete evacuation of the uterus. Despite being relatively asymptomatic in most cases, this finding often leads to additional surgical treatment (curettage). A comparison of effectiveness and cost-effectiveness of surgical management versus expectant management is lacking in women with incomplete miscarriage after misoprostol. METHODS/DESIGN: The proposed study is a multicentre randomized controlled trial that assesses the costs and effects of curettage versus expectant management in women with incomplete evacuation of the uterus after misoprostol treatment for first trimester miscarriage.Eligible women will be randomized, after informed consent, within 24 hours after identification of incomplete evacuation of the uterus by ultrasound scanning. Women are randomly allocated to surgical or expectant management. Curettage is performed within three days after randomization.Primary outcome is the sonographic finding of an empty uterus (maximal diameter of any contents of the uterine cavity < 10 millimeters) six weeks after study entry. Secondary outcomes are patients’ quality of life, surgical outcome parameters, the type and number of re-interventions during the first three months and pregnancy rates and outcome 12 months after study entry. DISCUSSION: This trial will provide evidence for the (cost) effectiveness of surgical versus expectant management in women with incomplete evacuation of the uterus after misoprostol treatment for first trimester miscarriage. TRIAL REGISTRATION: Dutch Trial Register: NTR3110. followed by third stage manipulation. This study is the first population-based study for uterine inversion. With the reported associated factors and occurrence in women with a low-risk profile, we show that every birth attendant should be able to detect this rare but severe complication. Puerperal uterine inversion in the Netherlands: a nationwide cohort study. Witteveen T, van Stralen G, Zwart J, van Roosmalen J. Acta Obstet Gynecol Scand. 2013 Mar;92(3):334-7. Author information Department of Obstetrics, Leiden University Medical Center, Leiden, the Netherlands. Abstract Puerperal uterine inversion is a severe but rare obstetric complication of yet unknown origin. In this two-year study we determine the incidence of this complication and we describe associated risk factors to expose its etiology. All cases of uterine inversion were included from a nationwide cohort study which contained all 98 hospitals with a maternity unit in the Netherlands. We reviewed the medical records of 15 patients, resulting an incidence of approximately 1 in 20 000 vaginal births. Fourteen cases (93.3%) were classified as low-risk pregnancies at booking. Nulliparous women were not overrepresented and the main associated factors were signs of prolonged labor Wetenschappelijk overzicht 2012 - 2013 42 43 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Severe adverse maternal outcomes among low risk women with planned home versus hospital births in the Netherlands: nationwide cohort study. de Jonge A, Mesman JA, Manniën J, Zwart JJ, van Dillen J, van Roosmalen J. BMJ. 2013 Jun 13;346:f3263. Author information Department of Midwifery Science, AVAG and the EMGO Institute of Health and Care Research, VU University Medical Center, Amsterdam, Netherlands. Abstract OBJECTIVES: To test the hypothesis that low risk women at the onset of labour with planned home birth have a higher rate of severe acute maternal morbidity than women with planned hospital birth, and to compare the rate of postpartum haemorrhage and manual removal of placenta. DESIGN: Cohort study using a linked dataset. SETTING: Information on all cases of severe acute maternal morbidity in the Netherlands collected by the national study into ethnic determinants of maternal morbidity in the netherlands (LEMMoN study), 1 August 2004 to 1 August 2006, merged with data from the Netherlands perinatal register of all births occurring during the same period. PARTICIPANTS: 146 752 low risk women in primary care at the onset of labour. MAIN OUTCOME MEASURES: Severe acute maternal morbidity (admission to an intensive care unit, eclampsia, blood transfusion of four or more packed cells, and other serious events), postpartum haemorrhage, and manual removal of placenta. RESULTS: Overall, 92 333 (62.9%) women had a planned home birth and 54 419 (37.1%) a planned hospital birth. The rate of severe acute maternal morbidity among planned primary care births was 2.0 per 1000 births. For nulliparous women the rate for planned home versus planned hospital birth was 2.3 versus 3.1 per 1000 births (adjusted odds ratio 0.77, 95% confidence interval 0.56 to 1.06), relative risk reduction 25.7% (95% confidence interval -0.1% to 53.5%), the rate of postpartum haemorrhage was 43.1 versus 43.3 (0.92, 0.85 to 1.00 and 0.5%, -6.8% to 7.9%), and the rate of manual removal of placenta was 29.0 versus 29.8 (0.91, 0.83 to 1.00 and 2.8%, -6.1% to 11.8%). For parous women the rate of severe acute maternal morbidity for planned home versus planned hospital birth was 1.0 versus 2.3 per 1000 births (0.43, 0.29 to 0.63 and 58.3%, 33.2% to 87.5%), the rate of postpartum haemorrhage was 19.6 versus 37.6 (0.50, 0.46 to 0.55 and 47.9%, 41.2% to 54.7%), and the rate of manual removal of placenta was 8.5 versus 19.6 (0.41, 0.36 to 0.47 and 56.9%, 47.9% to 66.3%). CONCLUSIONS: Low risk women in primary care at the onset of labour with planned home birth had lower rates of severe acute maternal morbidity, postpartum haemorrhage, and manual removal of placenta than those with planned hospital birth. For parous women these differences were statistically significant. Absolute risks were small in both groups. There was no evidence that planned home birth among low risk women leads to an increased risk of severe adverse maternal outcomes in a maternity care system with well trained midwives and a good referral and transportation system. Methotrexate or expectant management in women with an ectopic pregnancy or pregnancy of unknown location and low serum hCG concentrations? A randomized comparison. van Mello NM, Mol F, Verhoeve HR, van Wely M, Adriaanse AH, Boss EA, Dijkman AB, Bayram N, Emanuel MH, Friederich J, van der LeeuwHarmsen L, Lips JP, Van Kessel MA, Ankum WM, van der Veen F, Mol BW, Hajenius PJ. Hum Reprod. 2013 Jan;28(1):60-7. Author information Department of Obstetrics and Gynaecology, Academic Medical Centre, University of Amsterdam, PO Box 22700, 1100 DE Amsterdam, The Netherlands. Abstract STUDY QUESTION: What is the treatment success rate of systemic methotrexate (MTX) compared with expectant management in women with an ectopic pregnancy or a pregnancy of unknown location (PUL) with low and plateauing serum hCG concentrations? SUMMARY ANSWER: In women with an ectopic pregnancy or a PUL and low and plateauing serum hCG concentrations, expectant management is an alternative to medical treatment with single-dose systemic MTX. WHAT IS KNOWN AND WHAT THIS PAPER ADDS: MTX is often used in asymptomatic women with an ectopic pregnancy or a PUL with low and plateauing serum hCG concentrations. These pregnancies may be self-limiting and watchful waiting is suggested as an alternative, but evidence from RCTs is lacking. The results of this RCT show that expectant management is an alternative to treatment with systemic MTX in a single-dose regimen in these women. STUDY DESIGN, SIZE, DURATION: A multicentre RCT women were assigned to systemic MTX (single dose) treatment or expectant management, using a web-based randomization program, block randomization with stratification for hospital and serum hCG concentration (<1000 versus 1000-2000 Wetenschappelijk overzicht 2012 - 2013 44 45 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie IU/l). The primary outcome measure was an uneventful decline of serum hCG to an undetectable level (<2 IU/l) by the initial intervention strategy. Secondary outcome measures included additional treatment, side effects and serum hCG clearance time. PARTICIPANTS, SETTING, METHODS: From April 2007 to January 2012, we performed a multicentre study in The Netherlands. All haemodynamically stable women >18 years old with both an ectopic pregnancy visible on transvaginal sonography and a plateauing serum hCG concentration <1500 IU/l or with a PUL and a plateauing serum hCG concentration <2000 IU/l were eligible for the trial. MAIN RESULTS: We included 73 women of whom 41 were allocated to single-dose MTX and 32 to expectant management. There was no difference in primary treatment success rate of single-dose MTX versus expectant management, 31/41 (76%) and 19/32 (59%), respectively [relative risk (RR) 1.3 95% confidence interval (CI) 0.9-1.8]. In nine women (22%), additional MTX injections were needed, compared with nine women (28%) in whom systemic MTX was administered after initial expectant management (RR 0.8; 95% CI 0.4-1.7). One woman (2%) from the MTX group underwent surgery compared with four women (13%) in the expectant management group (RR 0.2; 95% CI 0.02-1.7), all after experiencing abdominal pain within the first week of follow-up. In the MTX group, nine women reported side effects versus none in the expectant management group. No serious adverse events were reported. Single-dose systemic MTX does not have a larger treatment effect compared with expectant management in women with an ectopic pregnancy or a PUL and low and plateauing serum hCG concentrations. WIDER IMPLICATIONS OF THE FINDINGS: Sixty percent of women after expectant management had an uneventful clinical course with steadily declining serum hCG levels without any intervention, which means that MTX, a potentially harmful drug, can be withheld in these women. BIAS, LIMITATION AND GENERALISABILITY: A limitation of this RCT is that it was an open (not placebo controlled) trial. Nevertheless, introduction of bias was probably limited by the strict criteria to be fulfilled for treatment with MTX. STUDY FUNDING: This trial is supported by a grant of the Netherlands Organization for Health Research and Development (ZonMw Clinical fellow grant 90700154). TRIAL REGISTRATION: ISRCTN 48210491. Incidence and predictors of maternal cardiovascular mortality and severe morbidity in The Netherlands: a prospective cohort study. Huisman CM, Zwart JJ, Roos-Hesselink JW, Duvekot JJ, van Roosmalen J. PLoS One. 2013;8(2):e56494. Author information Department of Obstetrics and Gynaecology, Bronovo Hospital, The Hague, The Netherlands. Abstract OBJECTIVE: To assess incidence and possible risk factors of severe maternal morbidity and mortality from cardiovascular disease in The Netherlands. DESIGN: A prospective population based cohort study. SETTING: All 98 maternity units in The Netherlands. POPULATION: All women delivering in The Netherlands between August 2004 and August 2006 (n = 371,021). METHODS: Cases of severe maternal morbidity and mortality from cardiovascular disease were prospectively collected during a two-year period in The Netherlands. Women with cardiovascular complications during pregnancy or postpartum who were admitted to the ward, intensive care or coronary care unit were included. Cardiovascular morbidity was defined as cardiomyopathy, valvular disease, ischaemic heart disease, arrhythmias or aortic dissection. All women delivering in the same period served as a reference cohort. MAIN OUTCOME MEASURES: Incidence, case fatality rates and possible risk factors. RESULTS: Incidence of severe maternal morbidity due to cardiovascular disease was 2.3 per 10,000 deliveries (84/358,874). Maternal mortality rate from cardiovascular disease was 3.0 per 100,000 deliveries (11/358,874). Case fatality rate in women with severe maternal morbidity due to cardiovascular disease was 13% (11/84). Case fatality rate was highest in aortic dissection (83%). Pre-existing acquired or congenital heart disease was identified in 34% of women. Thirty-one percent of women were of advanced maternal age (>35 years of age) and 5 percent above 40 years of age. Possible risk factors for cardiovascular morbidity were caesarean section (either resulting in or as a result of cardiovascular disease), multiple pregnancy, prior caesarean section, non-Western ethnicity and obesity. CONCLUSIONS: In The Netherlands cardiovascular disease is a rare cause of severe maternal morbidity with an incidence of 2.3 per 10,000 deliveries and a high case fatality rate of 13%. Cardiovascular complications develop mostly in women not known with cardiac disease pre-pregnancy. lingslanden, en vergelijkbaar met de landen om ons heen. De laatste jaren is er een daling zichtbaar in maternale sterfte in Nederland. De meeste moedersterfte wordt veroorzaakt door cardiovasculaire oorzaken. De belangrijkste directe oorzaken van moedersterfte blijven pre-eclampsie, trombo-embolie en haemorrhagie postpartum. De auditcommissie maternale sterfte geeft adviezen om de zorg voor zwangere vrouwen te optimaliseren. Collaborations Moedersterfte in Nederland op de ‘goede’ weg? Schutte JM, Van den Akker T, Engel NMAA, De Groot CJM, Kuppens SMI, Schuitemaker NWE, Vermeulen GM, Zwart JJ, Van Roosmalen JMM Ned Tijdschr Obstet Gynaecol. 2013;126:286 Samenvatting Gegevens over maternale sterfte in Nederland worden verzameld, geclassificeerd en beoordeeld op geleverde zorg door de auditcommissie maternale sterfte. Maternale sterfte is in Nederland laag ten opzichte van ontwikkeWetenschappelijk overzicht 2012 - 2013 46 47 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Induction of labor versus expectant management in women with preterm prelabor rupture of membranes between 34 and 37 weeks: a randomized controlled trial. van der Ham DP, Vijgen SM, Nijhuis JG, van Beek JJ, Opmeer BC, Mulder AL, Moonen R, Groenewout M, van Pampus MG, Mantel GD, Bloemenkamp KW, van Wijngaarden WJ, Sikkema M, Haak MC, Pernet PJ, Porath M, Molkenboer JF, Kuppens S, Kwee A, Kars ME, Woiski M, Weinans MJ, Wildschut HI, Akerboom BM, Mol BW, Willekes C; PPROMEXIL trial group. PLoS Med. 2012;9(4):e1001208. Collaborators (39) Stigter R Author information Department of Obstetrics and Gynecology, Maastricht University Medical Center, GROW-School for Oncology and Developmental Biology, Maastricht, The Netherlands. Abstract BACKGROUND: At present, there is insufficient evidence to guide appropriate management of women with preterm prelabor rupture of membranes (PPROM) near term. METHODS AND FINDINGS: We conducted an open-label randomized controlled trial in 60 hospitals in The Netherlands, which included nonlaboring women with >24 h of PPROM between 34(+0) and 37(+0) wk of gestation. Participants were randomly allocated in a 1:1 ratio to induction of labor (IoL) or expectant management (EM) using block randomization. The main outcome was neonatal sepsis. Secondary outcomes included mode of delivery, respiratory distress syndrome (RDS), and chorioamnionitis. Patients and caregivers were not blinded to randomization status. We updated a prior meta-analysis on the effect of both interventions on neonatal sepsis, RDS, and cesarean section rate. From 1 January 2007 to 9 September 2009, 776 patients in 60 hospitals were eligible for the study, of which 536 patients were randomized. Four patients were excluded after randomization. We allocated 266 women (268 neonates) to IoL and 266 women (270 neonates) to EM. Neonatal sepsis occurred in seven (2.6%) newborns of women in the IoL group and in 11 (4.1%) neonates in the EM group (relative risk [RR] 0.64; 95% confidence interval [CI] 0.25 to 1.6). RDS was seen in 21 (7.8%, IoL) versus 17 neonates (6.3%, EM) (RR 1.3; 95% CI 0.67 to 2.3), and a cesarean section was performed in 36 (13%, IoL) versus 37 (14%, EM) women (RR 0.98; 95% CI 0.64 to 1.50). The risk for chorioamnionitis was reduced in the IoL group. No serious adverse events were reported. Updating an existing meta-analysis with our trial results (the only eligible trial for the update) indicated RRs of 1.06 (95% CI 0.64 to 1.76) for neonatal sepsis (eight trials, 1,230 neonates) and 1.27 (95% CI 0.98 to 1.65) for cesarean section (eight trials, 1,222 women) for IoL compared with EM. CONCLUSIONS: In women whose pregnancy is complicated by late PPROM, neither our trial nor the updated meta-analysis indicates that IoL substantially improves pregnancy outcomes compared with EM. TRIAL REGISTRATION: Current Controlled Trials ISRCTN29313500 almost a similar accuracy was reached using AMH or AFC alone (AUC 0.78 and 0.76, respectively). Combining the two tests, however, did not improve prediction (AUC 0.80, P = 0.19) of poor response. In predicting ongoing pregnancy after IVF, age was the best single predictor (AUC 0.57), and none of the ORTs added any value. CONCLUSIONS: This IPD meta-analysis demonstrates that AFC and AMH clearly add to age in predicting poor response. As single tests, AFC and AMH both fully cover the prediction of poor ovarian response. In contrast, none of the ORTs add any information to the limited capacity of female age to predict ongoing pregnancy after IVF. The clinical usefulness of ORTs prior to IVF will be limited to the prediction of ovarian response. Boek(bijdrage) Maternal Critial Care, a multidisciplinary approach. Editors: M. van de Velde, H. Scholefeld, L.A. Plante. Hoofdstuk : Sepsis. J.J. Zwart Uitgever: Cambridge University Press, New York. ISBN: 9781107018495 Wetenschappelijk overzicht 2012 - 2013 Gynaecologie Gynaecologie Added value of ovarian reserve testing on patient characteristics in the prediction of ovarian response and ongoing pregnancy: an individual patient data approach. Broer SL, van Disseldorp J, Broeze KA, Dolleman M, Opmeer BC, Bossuyt P, Eijkemans MJ, Mol BW, Broekmans FJ; IMPORT study group. Hum Reprod Update. 2013 Jan-Feb;19(1):26-36. Collaborators (35) Van der Linden PJ Author information Department of Reproductive Medicine, University Medical Center Utrecht, Utrecht, The Netherlands. S.L.Broer-2umcutrecht.nl Abstract BACKGROUND: Although ovarian reserve tests (ORTs) are frequently used prior to IVF treatment for outcome prediction, their added predictive value is unclear. We assessed the added value of ORTs to patient characteristics in the prediction of IVF outcome. METHODS: An individual patient data (IPD) meta-analysis from published studies was performed. Studies on FSH, anti-Müllerian hormone (AMH) or antral follicle count (AFC) in women undergoing IVF were identified and authors were contacted. Using random intercept logistic regression models, we estimated the added predictive value of ORTs for poor response and ongoing pregnancy after IVF, relative to patient characteristics. RESULTS: We were able to collect 28 study databases, comprising 5705 women undergoing IVF. The area under the receiver-operating characteristic curve (AUC) for female age in predicting poor response was 0.61. AFC and AMH each significantly improved the model fit (P-value <0.001). Moreover, 48 49 Wetenschappelijk overzicht 2012 - 2013 Heelkunde METHODS: Construction of the TiOS was based on a multidimensional theoretical framework. Cancer patients were surveyed within a week after their consultation. Trust, satisfaction, trust in health care, self-reported health and background variables were assessed. Dimensionality, internal consistency, test-retest reliability and construct validity were investigated. RESULTS: Data of 423 patients were included (response rate = 65%). After item reduction, the TiOS included 18 items. Trust scores were high. Exploratory factor analysis suggested one-dimensionality. Confirmatory factor analysis nevertheless indicated a reasonable fit of our four-dimensional theoretical model, distinguishing competence, fidelity, honesty and caring. Internal consistency and test-retest reliabilities were high. Good construct validity was indicated by moderate correlations of trust (TiOS) with satisfaction, trust in health care, willingness to recommend and number of consultations with the oncologist. Exploratory analyses suggested significant correlations of trust with ethnicity and age. CONCLUSIONS: The TiOS reliably and validly assesses cancer patients’ trust in their oncologist. The questionnaire can be employed in both clinical practice and future research of cancer patients’ trust. Publicaties Foot posture and patellar tendon pain among adult volleyball players. de Groot R, Malliaras P, Munteanu S, Payne C, Morrissey D, Maffulli N. Clin J Sport Med. 2012 Mar;22(2):157-9. Abstract OBJECTIVE: We hypothesized that individuals with a normal foot posture would be less likely to experience patellar tendon pain and pathology than those with a pronated or supinated foot. DESIGN: Observational study. SETTING: Field-based study among competing athletes. PARTICIPANTS: Volleyball players competing in the Victorian State League, Australia. ASSESSMENT OF RISK FACTORS: Patellar tendinopathy (PT) is common in sports involving running and jumping and can severely limit athletes’ ability to compete. Several studies have investigated potential etiological factors for the development of PT, but little is known about the association between PT and foot posture. MAIN OUTCOME MEASURES: Static foot posture index (FPI), patellar tendon pain during single-leg decline squatting, and gray scale ultrasound imaging were measured in 78 recreational to elite volleyball players (48 men and 30 women). RESULTS: Men with patellar tendon pain were more likely to have a normal foot posture and men without pain were more likely to be pronated according to the FPI (P < 0.05). Women showed no association between FPI and pain or imaging (P > 0.05). CONCLUSIONS: Men with a normal foot posture were more likely to have PT compared to men with a pronated foot type. The first case record of a female patient with buboniclymphogranuloma venereum (LGV), serovariant L2b Stephan P Verweij, Sander Ouburg, Harry de Vries, Servaas A Morre´, Cees J W van Ginkel, Hanna Bos, Fré W Sebens Sex Transm Infect. 2012;88(5):346-7. Abstract : zie Dermatologie Assessing cancer patients’ trust in their oncologist: development and validation of the Trust in Oncologist Scale (TiOS). Hillen MA, Koning CC, Wilmink JW, Klinkenbijl JH, Eddes EH, KallimanisKing BL, de Haes JC, Smets EM. Support Care Cancer. 2012;20(8):1787-95. Abstract PURPOSE: The aim of this study was to develop and validate the Trust in Oncologist Scale (TiOS), which aims to measure cancer patients’ trust in their oncologist. Structure, reliability and validity were examined. Wetenschappelijk overzicht 2012 - 2013 50 51 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde [Acute obstructive colon carcinoma and liver metastases: how to treat?]. [Article in Dutch] Buis CI, Bosker RJ, ter Borg F, de Noo ME, Liem MS. Ned Tijdschr Geneeskd. 2012;156(43):A4817. Source Deventer Ziekenhuis, Afd. Chirurgie, Deventer, the Netherlands. Abstract BACKGROUND: The incidence of patients who present with acute obstructive colon carcinoma and synchronous liver metastases is increasing. CASE DESCRIPTION: Two men aged 70 and 71 both had acute obstructive colon carcinoma with synchronous liver metastases. Both patients underwent successful stent placement that solved the colonic obstruction. Five weeks later the first patient underwent an elective surgical procedure at which both the colon carcinoma and the liver metastases were resected. The second patient had more widespread metastases and first received chemotherapy. After six courses of chemotherapy the liver metastases became resectable and he underwent a two-stage liver resection with a left-sided hemicolectomy. CONCLUSION: These cases illustrate that placing a stent can be an alternative to an acute operation, and thus can save the patient from an emergency laparotomy with creation of a stoma that needs closure afterwards. In addition stent placement is a good starting point for an intended curative treatment trajectory, also in the setting of synchronous liver metastases accompanying the acute obstructive carcinoma. left hemicolectomy or extended resection, postoperative mortality rate was 41% compared with 7% in patients without additional risk factors. CONCLUSIONS: For elderly patients with two or more additional risk factors, a nonelective resection should be considered a high-risk procedure with a mortality risk of up to 41%. The results of this study could be used to adequately inform patient and family and should have consequences for composing an operative team. Heelkunde Nonelective colon cancer resections in elderly patients: results from the dutch surgical colorectal audit. Kolfschoten NE, Wouters MW, Gooiker GA, Eddes EH, Kievit J, Tollenaar RA, Marang-van de Mheen PJ; Dutch Surgical Colorectal Audit group. Dig Surg. 2012;29(5):412-9. Collaborators (14) Author information Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands. Abstract AIMS: The aim of the study was to assess which factors contribute to postoperative mortality, especially in elderly patients who undergo emergency colon cancer resections, using a nationwide population-based database. METHODS: 6,161 patients (1,172 nonelective) who underwent a colon cancer resection in 2010 in the Netherlands were included. Risk factors for postoperative mortality were investigated using a multivariate logistic regression model for different age groups, elective and nonelective patients separately. RESULTS: For both elective and nonelective patients, mortality risk increased with increasing age. For nonelective elderly patients (80+ years), each additional risk factor increased the mortality risk. For a nonelective patient of 80+ years with an American Society of Anesthesiologists score of III+ and a Wetenschappelijk overzicht 2012 - 2013 52 53 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Combining process indicators to evaluate quality of care for surgical patients with colorectal cancer: are scores consistent with short-term outcome? Kolfschoten NE, Gooiker GA, Bastiaannet E, van Leersum NJ, van de Velde CJ, Eddes EH, Marang-van de Mheen PJ, Kievit J, van der Harst E, Wiggers T, Wouters MW, Tollenaar RA; Dutch Surgical Colorectal Audit group. BMJ Qual Saf. 2012 Jun;21(6):481-9. Collaborators (11) Author information Department of Surgery, Leiden University Medical Center, PO Box 9600, Leiden 2300 RC, The Netherlands. Abstract OBJECTIVE: To determine if composite measures based on process indicators are consistent with short-term outcome indicators in surgical colorectal cancer care. DESIGN: Longitudinal analysis of consistency between composite measures based on process indicators and outcome indicators for 85 Dutch hospitals. SETTING: The Dutch Surgical Colorectal Audit database, the Netherlands. PARTICIPANTS: 4732 elective patients with colon carcinoma and 2239 with rectum carcinoma treated in 85 hospitals were included in the analyses. MAIN OUTCOME MEASURES: All available process indicators were aggregated into five different composite measures. The association of the different composite measures with risk-adjusted postoperative mortality and morbidity was analysed at the patient and hospital level. RESULTS: At the patient level, only one of the composite measures was negatively associated with morbidity for rectum carcinoma. At the hospital level, a strong negative association was found between composite measures and hospital mortality and morbidity rates for rectum carcinoma (p<0.05), and hospital morbidity rates for colon carcinoma. CONCLUSIONS: For individual patients, a high score on the composite measures based on process indicators is not associated with better shortterm outcome. However, at the hospital level, a good score on the composite measures based on process indicators was consistent with more favourable risk-adjusted short-term outcome rates. [A contractor with damaged knees]. [Article in Dutch] van Laarhoven S, Roerdink WH, van Ginkel CJ. Ned Tijdschr Geneeskd. 2012;156(47):A4561. Source Deventer Ziekenhuis, Deventer, Afd. Heelkunde, the Netherlands. Abstract A 51-year-old man developed burn wounds on both knees after finishing a cement floor. Cement burns are caused by wet cement, which is highly alkaline Initial treatment consists of lavage. Further management can be conservative but in full thickness injuries excision and grafting should be considered. Acta Chir Belg. 2013 Jan-Feb;113(1):30-4. Source Department of Surgery, Deventer Hospital, the Netherlands. Abstract BACKGROUND: Diverticulitis can be complicated by a colovesical fistula (CVF). This phenomenon is relatively uncommon in surgical practice. The aim of this study was to evaluate diagnostic and surgical management of CVF at our medical centre. MATERIAL AND METHODS: In this retrospective study, details of 31 patients undergoing surgery for CVF between January 1998 and March 2010 were recorded. These patient records were analysed for presenting symptoms, diagnostic investigations and surgical procedures. RESULTS: The most common presenting symptoms were pneumaturia, urinary tract infections, abdominal pain, and fecaluria. CT identified CVF in 28 patients (92.2%), cystoscopy in 4 patients (23.5%), and barium enema in 3 patients (13.6%). Surgical management was resection of the diseased colon segment with primary anastomosis in 29 of 31 patients. The bladder fistulae were oversewn and an omental plasty was placed between bowel anastomosis and bladder. There was only one postoperative leak and one case of mortality (3.2%). CONCLUSIONS: CT is the most sensitive test in identifying CVF. Resection of the diseased colon segment and primary anastomosis seems to be an effective and safe surgical method for treating CVF. This surgical treatment has an acceptable risk for anastomotic leak and mortality. Laparoscopic and Open Subtotal Colectomies Have Similar ShortTerm Results. Hoogenboom FJ, Bosker RJ, Groen H, Meijerink WJ, Lamme B, Pierie JP. Dig Surg. 2013 Aug 20;30(4-6):265-269. Author information Department of Surgery, Medical Centre Leeuwarden and the Leeuwarden Institute of Minimally Invasive Surgery Leeuwarden, Groningen, The Netherlands. Abstract Background: Laparoscopic subtotal colectomy (STC) is a complex procedure. It is possible that short-term benefits for segmental resections cannot be attributed to this complex procedure. This study aims to assess differences in short-term results for laparoscopic versus open STC during a 15-year single-institute experience. Methods: We reviewed consecutive patients undergoing laparoscopic or open elective or subacute STC from January 1997 to December 2012. Results: Fifty-six laparoscopic and 50 open STCs were performed. The operation time was significantly longer in the laparoscopic Management of colovesical fistulae caused by diverticulitis: 12 years of experience in one medical centre. Niebling M, van Nunspeet L, Zwaving H, Eddes EH, Bosker R, Eeftinck Schattenkerk M. Wetenschappelijk overzicht 2012 - 2013 54 55 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde An association between chronic obstructive pulmonary disease and abdominal aortic aneurysm beyond smoking: results from a casecontrol study. Meijer CA, Kokje VB, van Tongeren RB, Hamming JF, van Bockel JH, Möller GM, Lindeman JH. Eur J Vasc Endovasc Surg. 2012 Aug;44(2):153-7. Author information Department of Vascular Surgery, Leiden University Medical Center, Leiden, The Netherlands. Abstract OBJECTIVES: It is currently unclear whether the parallels between abdominal aortic aneurysms (AAAs) and chronic obstructive pulmonary disease (COPD) are explained by common risk factors alone, such as cigarette smoking, or by a predetermined cause. Given the persistent controversy with regard to the association between AAA and COPD, we studied this association in depth. METHODS: We conducted a case-control study comparing patients with a small AAA (maximum infrarenal diameter 35-50 mm, n = 221) with controls diagnosed with peripheral artery disease (PAD, n = 87). The controls were matched to the cases for lifetime cigarette smoking. Pulmonary function was measured by spirometry, and all subjects completed a questionnaire on medical history and smoking habits (current, former and never smokers). RESULTS: Aneurysm patients were similar to controls with respect to gender (p = 0.71), lifetime cigarette smoking (39 vs. 34 pack years, p = 0.23) and history of cardiovascular disease (45% vs. 55%, p = 0.12). Aneurysm patients had more airway obstruction (forced expiratory volume in 1 s/forced vital capacity (FEV1/FVC) (0.69 ± 0.12 vs. 0.78 ± 0.11, p < 0.001)), which was most pronounced in never smokers (0.73 ± 0.07 vs. 0.86 ± 0.07, p < 0.001). COPD was more prevalent in aneurysm patients (44%; 98/221) than in controls (20%; 17/87) (adjusted odds ratio (OR) 3.0; 95% confidence interval (95%CI) 1.6-5.5, p < 0.001). In particular, a major proportion of AAA patients was newly diagnosed with COPD; only 40 of 98 patients (41%) with COPD (mild, moderate or severe/very severe) were known before with obstructive pulmonary defects and received treatment. CONCLUSIONS: This study confirms an association between AAA and COPD and shows that this association is independent from smoking. Findings also demonstrate that COPD is under-diagnosed in AAA patients. Uncommon cause of pneumoperitoneum. van Nunspeet L, Eddes EH, de Noo ME. World J Gastrointest Surg. 2013 Dec 27;5(12):329-31 Author information Department of Surgery, Deventer Ziekenhuis, 7416 SE Deventer, The Netherlands. Abstract Free intraperitoneal air is thought to be pathognomonic for perforation of a hollow viscus. Here, we present a patient with pain in the upper left quadrant, a mild fever and leukocytosis. Free air was suggested under the left diaphragm but during the explorative laparotomy no signs of gastric or diverticular perforation were seen. Further exploration and revision of the computed tomography revealed a perforated splenic abscess. Splenic abscesses are a rare clinical entity. Presenting symptoms are often non-specific and include upper abdominal pain, recurrent or persistent fever, nausea and vomiting, splenomegaly, leukocytosis and left lower chest abnormalities. Predisposing conditions can be very divergent and include depressed immunosuppressed state, metastatic or contiguous infection, splenic infarction and trauma. Splenic abscess should therefore be considered in a patient with fever, left upper abdominal pain and leukocytosis. Moreover, our case shows that splenic abscess can present in an exceptional way without clear underlying aetiology and should even be considered in the presence of free abdominal air. group, median 266 min (range 121-420 min), compared to 153 min (range 90-408 min) in the open group (p < 0.001). Median hospital stay showed no statistical difference, 14 days (range 1-129 days) in the laparoscopic and 13 days (range 1-85 days) in the open group. Between-group postoperative complications were not statistically different. Conclusions: Laparoscopic STC has short-term results similar to the open procedure, except for a longer operation time. The laparoscopic approach for STC is therefore only advisable in selected patients combined with extensive preoperative counseling. Wetenschappelijk overzicht 2012 - 2013 [Nonelective colon cancer resections in elderly patients: results from the Dutch Surgical Colorectal Audit]. [Article in Dutch] Kolfschoten NE, Wouters MW, Gooiker GA, van Leersum NJ, Eddes EH, Kievit J, Tollenaar RA, Marang-van de Mheen PJ. Ned Tijdschr Geneeskd. 2013;157(30):A6426. Author information Leids Universitair Medisch Centrum, Leiden, Afd. Heelkunde, the Netherlands. Abstract OBJECTIVE: The aim of the study was to identify risk factors for postoperative mortality in patients undergoing surgery for colon cancer. We looked specifically at patients ≥ 80 years of age in whom a nonelective colon cancer resection was performed. STUDY DESIGN: Observational study. METHODS: We included data from 6,161 patients who underwent colon cancer surgery in 2010 in a Dutch hospital; a nonelective colon cancer resection was performed in 1,172 of these patients. Risk factors for postoperative mortality were identified using a multivariate logistic regression analysis. 56 57 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde Evaluating the validity of quality indicators for colorectal cancer care. Gooiker GA, Kolfschoten NE, Bastiaannet E, van de Velde CJ, Eddes EH, van der Harst E, Wiggers T, Rosendaal FR, Tollenaar RA, Wouters MW; Dutch Surgical Colorectal Audit group. J Surg Oncol. 2013 Dec;108(7):465-71. Author information Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands. Abstract BACKGROUND: Quality indicators (QI) have been developed to measure quality of colorectal cancer care in the Netherlands. The aim of this study is to evaluate if these QI consistently assess the quality of colorectal cancer care in a hospital (internal consistency) and if these QI correlate with each other (construct validity). METHODS: The performance of 85 hospitals participating in the Dutch Surgical Colorectal Audit between the 1st of January 2010 and 31st of December 2010, were evaluated on nine QI: three process indicators for colon cancer, three process indicators for rectal cancer and three outcome indicators. Consistency between all process indicators was assessed, and correlations between all process and outcome indicators were evaluated for colon and rectal cancer care separately. RESULTS: Hospital performance on the nine QI ranged widely. There was little consistency between the process indicators in assessing hospital performance. Most evaluated process indicators for colorectal cancer care did not correlate with each other, but were associated with better hospital specific patient outcomes. CONCLUSION: QI on colorectal cancer care do provide complementary information. Individual QI are not suitable as a surrogate measure for the quality of colorectal cancer care. More comprehensive measures are needed for true assessment of hospital performance. We studied elective and nonelective intestinal resections separately in different age groups. RESULTS: Mortality in the total study population was 4.9%. Mortality increased with age in patients who underwent either elective or nonelective intestinal resection. For patients ≥ 80 years of age who underwent nonelective intestinal resection, each additional risk factor doubled the mortality risk. In patients aged ≥ 80 years with an American Society of Anesthesiologists classification of class ≥ 3 who underwent a left hemicolectomy or ‘other’ intestinal resection, the postoperative mortality rate was 41%; in patients of the same age without additional risk factors this was 7%. CONCLUSIONS: In patients ≥ 80 years of age with 2 or more additional risk factors, nonelective intestinal resection should be considered a high-risk procedure with a mortality risk of up to 41%. This result can be used in clinical decision making concerning treatment and in providing information for patients and their families. diagnostics, preoperative multidisciplinary meetings and standardised reporting increased; complication-, re-intervention and postoperative mortality rates decreased significantly. DISCUSSION: The success of the DSCA is the result of effective surgical collaboration. The leading role of the ASN in conducting the audit resulted in full participation of all colorectal surgeons in the Netherlands. By integrating the audit into the ASNs’ quality assurance policy, it could be used to set national quality standards. Future challenges include reduction of administrative burden; expansion to a multidisciplinary registration; and addition of financial information and patient reported outcomes to the audit data. [Improving healthcare and its manageability]. [Article in Dutch] Eddes EH. Ned Tijdschr Geneeskd. 2013;157(25):A6485. Author information Deventer Ziekenhuis, afd. Heelkunde, Deventer, the Netherlands. Abstract Healthcare in the Netherlands is facing serious challenges. With an ageing population, the consumption of healthcare is on the rise. Quality needs to go up while costs have to go down. The Netherlands Institute for Social Research estimates that healthcare costs, as a percentage of the Gross Domestic Product, will rise from 13% in 2011 (90 billion euros) up to 31% in 2040. Clear choices need to be made in the near future; otherwise, the cost of healthcare will become prohibitive. This commentary explains why volume-directed healthcare alone is not the magic answer. Besides criteria related to process and structure, we are also in need of robust and valid data. Clinical auditing combined with patient-reported outcome measures (PROMs) and financial data will give the additional tools needed to improve and manage healthcare. Wetenschappelijk overzicht 2012 - 2013 Focusing on desired outcomes of care after colon cancer resections; hospital variations in ‘textbook outcome’. Kolfschoten NE, Kievit J, Gooiker GA, van Leersum NJ, Snijders HS, Eddes EH, Tollenaar RA, Wouters MW, Marang-van de Mheen PJ. Eur J Surg Oncol. 2013 Feb;39(2):156-63. Author information Leiden University Medical Centre, Dept of Surgery K6-R, P.O. Box 9600, 2300 RC Leiden, The Netherlands. Abstract AIMS: We propose a summarizing measure for outcome indicators, representing the proportion of patients for whom all desired short-term outcomes 58 59 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde The Dutch surgical colorectal audit. Van Leersum NJ, Snijders HS, Henneman D, Kolfschoten NE, Gooiker GA, ten Berge MG, Eddes EH, Wouters MW, Tollenaar RA; Dutch Surgical Colorectal Cancer Audit Group, Bemelman WA, van Dam RM, Elferink MA, Karsten TM, van Krieken JH, Lemmens VE, Rutten HJ, Manusama ER, van de Velde CJ, Meijerink WJ, Wiggers T, van der Harst E, Dekker JW, Boerma D. Eur J Surg Oncol. 2013 Oct;39(10):1063-70. Author information Leiden University Medical Center, Leiden, Department of Surgery, The Netherlands. Abstract INTRODUCTION: In 2009, the nationwide Dutch Surgical Colorectal Audit (DSCA) was initiated by the Association of Surgeons of the Netherlands (ASN) to monitor, evaluate and improve colorectal cancer care. The DSCA is currently widely used as a blueprint for the initiation of other audits, coordinated by the Dutch Institute for Clinical Auditing (DICA). This article illustrates key elements of the DSCA and results of three years of auditing. METHODS: Key elements include: a leading role of the professional association with integration of the audit in the national quality assurance policy; web-based registration by medical specialists; weekly updated online feedback to participants; annual external data verification with other data sources; improvement projects. RESULTS: In two years, all Dutch hospitals participated in the audit. Caseascertainment was 92% in 2010 and 95% in 2011. External data verification by comparison with the Netherlands Cancer Registry (NCR) showed high concordance of data items. Within three years, guideline compliance for of care (a ‘textbook outcome’) is realized. The aim of this study was to investigate hospital variation in the proportion of patients with a ‘textbook outcome’ after colon cancer resections in the Netherlands. METHODS: Patients who underwent a colon cancer resection in 2010 in the Netherlands were included in the Dutch Surgical Colorectal Audit. A textbook outcome was defined as hospital survival, radical resection, no reintervention, no ostomy, no adverse outcome and a hospital stay < 14 days. We calculated the number of hospitals with a significantly higher (positive outlier) or lower (negative outlier) Observed/Expected (O/E) textbook outcome than average. As quality measures may be more discriminative in a low-risk population, analyses were repeated for low-risk patients only. RESULTS: A total of 5582 patients, treated in 82 hospitals were included. Average textbook outcome was 49% (range 26-71%). Eight hospitals were identified as negative outliers. In these hospitals a ‘textbook outcome’ was realized in 35% vs. 52% in average hospitals (p < 0.01). In a sub-analysis for low-risk patients, only one additional negative outlier was identified. CONCLUSIONS: The textbook outcome, representing the proportion of patients with a perfect hospitalization, gives a simple comprehensive summary of hospital performance, while preventing indicator driven practice. Therewith the ‘textbook outcome’ is meaningful for patients, providers, insurance companies and healthcare inspectorate. further explored hospital differences in LR and conversion rates. RESULTS: A total of 7350 patients, treated in 90 hospitals, were included. LR rate was 41% with a conversion rate of 15%. After adjustment for differences in case-mix, LR was associated with a lower risk of mortality (odds ratio 0.63, P < 0.01), major morbidity (odds ratio 0.72, P < 0.01), any complications (odds ratio 0.74, P < 0.01), hospital stay more than 14 days (odds ratio 0.71, P < 0.01), and irradical resections (odds ratio 0.68, P < 0.01), compared to OR. Outcome after conversion was similar to OR (P > 0.05). A large variation in LR and conversion rates among hospitals was found; however, the difference in outcome associated with operative techniques was not influenced by hospital of treatment. CONCLUSIONS: Use of laparoscopic techniques in colorectal cancer surgery in the Netherlands is safe and results are better in short-term outcome than open surgery, irrespective of the hospital of treatment. Outcome after conversion was similar to OR. Successful and safe introduction of laparoscopic colorectal cancer surgery in Dutch hospitals. Kolfschoten NE, van Leersum NJ, Gooiker GA, Marang van de Mheen PJ, Eddes EH, Kievit J, Brand R, Tanis PJ, Bemelman WA, Tollenaar RA, Meijerink J, Wouters MW. Ann Surg. 2013 May;257(5):916-21. Author information Department of Surgery †Medical Decision Making, Leiden University Medical Center, The Netherlands. Abstract OBJECTIVE: To investigate the safety of laparoscopic colorectal cancer resections in a nationwide population-based study. BACKGROUND: Although laparoscopic techniques are increasingly used in colorectal cancer surgery, little is known on results outside trials. With the fast introduction of laparoscopic resection (LR), questions were raised about safety. METHODS: Of all patients who underwent an elective colorectal cancer resection in 2010 in the Netherlands, 93% were included in the Dutch Surgical Colorectal Audit. Short-term outcome after LR, open resection (OR), and converted LR were compared in a generalized linear mixed model. We Wetenschappelijk overzicht 2012 - 2013 60 61 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde Evaluation of the effect of a comprehensive multidisciplinary care pathway for hip fractures: design of a controlled study. Flikweert ER, Izaks GJ, Reininga IH, Wendt KW, Stevens M. BMC Musculoskelet Disord. 2013 Oct 12;14:291. Author information Department of Surgery-Traumatology, University of Groningen, University Medical Center Groningen, P,O, Box 30,001, 9700 RB, Groningen, The Netherlands. Abstract BACKGROUND: Hip fractures constitute an economic burden on healthcare resources. Most persons with a hip fracture undergo surgery. As morbidity and mortality rates are high, perioperative care leaves room for improvement. Improvement can be achieved if it is organized in comprehensive care pathways, but the effectiveness of these pathways is not yet clear. Hence the objective of this study is to compare the clinical effectiveness of a comprehensive care pathway with care as usual on self-reported limitations in Activities of Daily Living. METHODS/DESIGN: A controlled trial will be conducted in which the comprehensive care pathway of University Medical Center Groningen will be compared with care as usual in two other, nonacademic, hospitals. In this trial, propensity scores will be used to adjust for differences at baseline between the intervention and control group. Propensity scores can be used in intervention studies where a classical randomized controlled trial is not feasible. Patients aged 60 years and older will be included. The hypothesis is that 15% more patients at University Medical Center Groningen compared with patients in the care-as-usual condition will have recovered at least as well at 6 months follow-up to pre-fracture levels for Activities of Daily Living. DISCUSSION: This study will yield new knowledge with respect to the clinical effectiveness of a comprehensive care pathway for the treatment of hip fractures. This is relevant because of the growing incidence of hip fractures and the consequent massive burden on the healthcare system. Additionally, this study will contribute to the growing knowledge of the application of propensity scores, a relatively novel statistical technique to simulate a randomized controlled trial in studies where it is not possible or difficult to execute this kind of design. Box 9600, 2300 RC, Leiden, The Netherlands. Abstract PURPOSE: This paper reports the external validation of a recently developed instrument, the Discharge of Hip fracture Patients score (DHP) that predicts discharge location on admission in patients living in their own home prior to hip fracture surgery. METHODS: The DHP (maximum score 100 points) was applied to 125 hip fracture patients aged 50 or more years admitted to an academic centre in the northern part of The Netherlands (Groningen cohort). The characteristics of this cohort, sensitivity, specificity and positive and negative predictive value (PPV, NPV) of the DHP for discharge to an alternative location (DAL) were calculated and compared with the original cohort of hip fracture patients from the western part of The Netherlands (Delft cohort). Scoring 30 points or higher indicated DAL. RESULTS: The Groningen cohort was younger compared to the Delft cohort, (mean age 75.4 vs. 78.5 years, P = 0.005) but was more often classified ASA III/IV (46.4% vs. 25.2%, P < 0.001). Sensitivity of the DHP for DAL in the Groningen cohort was 75% (vs. 83.8%), specificity of 66.7% (vs. 64.7%) and a PPV of 86.3% (vs. 79.2%), compared to the Delft cohort. CONCLUSION: External validation of the DHP was successful; it predicted discharge location of hip fracture patients accurately in another Dutch cohort, the sensitivity for DAL was somewhat lower but the PPV higher. Therefore, the DHP score is a useful valid and easily applied instrument for general hip fracture populations. The usefulness of lean six sigma to the development of a clinical pathway for hip fractures. Niemeijer GC, Flikweert E, Trip A, Does RJ, Ahaus KT, Boot AF, Wendt KW. J Eval Clin Pract. 2013 Oct;19(5):909-14. Author information Department of Lean Six Sigma (5Q202), Martini Hospital Groningen, Groningen, The Netherlands. Abstract AIMS AND OBJECTIVES: The objective of this study was to show the usefulness of lean six sigma (LSS) for the development of a multidisciplinary clinical pathway. METHODS: A single centre, both retrospective and prospective, non-randomized controlled study design was used to identify the variables of a prolonged length of stay (LOS) for hip fractures in the elderly and to measure the effect of the process improvements--with the aim of improving efficiency of care and reducing the LOS. RESULTS: The project identified several variables influencing LOS, and interventions were designed to improve the process of care. Significant results were achieved by reducing both the average LOS by 4.2 days (-31%) and the average duration of surgery by 57 minutes (-36%). The average LOS of patients discharged to a nursing home reduced by 4.4 days. CONCLUSION: The findings of this study show a successful application of LSS methodology within the development of a clinical pathway. Further research is needed to explore the effect of the use of LSS methodology at clinical outcome and quality of life. External validation of the discharge of hip fracture patients score. Vochteloo AJ, Flikweert ER, Tuinebreijer WE, Maier AB, Bloem RM, Pilot P, Nelissen RG. Int Orthop. 2013 Mar;37(3):477-82. Author information Department of Orthopaedic Surgery, Leiden University Medical Center, P.O. Wetenschappelijk overzicht 2012 - 2013 62 63 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde Complications following the extended lateral approach for calcaneal fractures do not influence mid- to long-term outcome. De Groot R, Frima AJ, Schepers T, Roerdink WH Injury. 2013 Nov;44(11):1596-600. Author information Department of Surgery, Deventer Hospital, Deventer, The Netherlands. Abstract BACKGROUND AND AIM: Open reduction and internal fixation (ORIF) of intra-articular calcaneal fractures through an extended lateral approach is frequently accompanied by a high complication rate. However, ORIF currently provides the best long-term clinical results. The aim of this study was twofold: (1) to evaluate both mid- to long-term clinical and radiological results of a consecutive series treated by ORIF and (2) to determine the influence of short-term complications on long-term clinical outcome. METHODS: Patients with a displaced intra-articular calcaneal fracture, treated with ORIF, through an extended lateral approach, in a level-2 trauma centre between 1995 and 2008 were evaluated for the study. The long-term tients ≤70 years. Tumour specimens were analysed for microsatellite instability (MSI), immunohistochemical mismatch-repair protein expression and MLH1promoter methylation. Tumours were classified as either: (a) likely caused by LS; (b) sporadic microsatellite-unstable (MSI-H); or (c) microsatellite-stable (MSS). Predictors of LS were determined by multivariable logistic regression. A total of 1117 CRC patients (57% males, median age 61 years) were included. Fifty patients (4.5%, 95% CI 3.4-5.9) were likely to have LS, and 71 had a sporadic MSI-H tumour (6.4%, 95% CI 5.1-8.0). Thirty-five patients likely to have LS (70%) were aged > 50 years. A molecular profile compatible with LS was detected in 10% (15/144) of patients aged ≤50, in 4% (15/377) of those aged 51-60 and in 3% (20/596) of patients > 61 years. Compared to MSS cases, patients likely to have LS were significantly younger (OR 3.9, 95% CI 1.7-8.7) and more often had right-sided CRCs (OR 14, 95% CI 6.0-34). In conclusion, molecular screening for LS in CRC patients ≤70 years leads to identification of a molecular profile compatible with LS in 4.5% of patients, with most of them not fulfilling the age criterion (≤50 years) routinely used for LS assessment. Routine use of MSI testing may be considered in CRC patients up to the age of 70 years, with a central role for the pathologist in the selection of patients. Zwelling lies na operatief herstel van een pertrochantaire femurfractuur. Dijkstra ML, Van Tongeren RB, Van der Hem LG Ned Tijdschr Heelkd 2013;5:201. Bias towards dementia: are hip fracture trials excluding too many patients? A systematic review. Hebert-Davies J, Laflamme GY, Rouleau D; HEALTH and FAITH investigators. Injury. 2012 Dec;43(12):1978-84. Collaborators (604) Roerdink WH, Frima AH, Flikweert ER Author information University of Montréal, Hôpital du Sacré Cœur, 5400 Gouin Ouest, Local J-3245, Montréal, Québec, Canada Abstract Patients with hip fractures are older and often present many co-morbidities, including dementia. These patients cannot answer quality of life questionnaires and are generally excluded from trials. We hypothesized that a significant number of patients are being excluded from these studies and this may impact outcomes. This was a two part study; the first analyzing databases of two ongoing large-scale multi-centred hip fracture trials and the second being a systematic review. The FAITH and HEALTH studies were analyzed for exclusion incidence directly related to dementia. The second part consisted of a systematic search of all relevant studies within the last 20 years. In the FAITH study, a total of 1690 subjects were excluded, 375 (22.2%) of which were due to dementia or cognitive impairment. In the HEALTH study, 575 were excluded with dementia/cognitive impairment representing 207 patients (36%). Following the systematic review, 251 articles were identified Collaborations Heelkunde Yield of routine molecular analyses in colorectal cancer patients ≤70 years to detect underlying Lynch syndrome. van Lier MG, Leenen CH, Wagner A, Ramsoekh D, Dubbink HJ, van den Ouweland AM, Westenend PJ, de Graaf EJ, Wolters LM, Vrijland WW, Kuipers EJ, van Leerdam ME, Steyerberg EW, Dinjens WN; LIMO Study Group. J Pathol. 2012 Apr;226(5):764-74. Collaborators (23) Eddes EH. Author information Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands. Abstract Although early detection of Lynch syndrome (LS) is important, a considerable proportion of patients with LS remains unrecognized. We aimed to study the yield of LS detection by routine molecular analyses in colorectal cancer (CRC) patients until 70 years of age. We prospectively included consecutive CRC paWetenschappelijk overzicht 2012 - 2013 64 65 Wetenschappelijk overzicht 2012 - 2013 Heelkunde functional outcome (American Orthopaedic Foot & Ankle Society (AOFAS), 36-Item Short-Form Health Survey (SF-36) and Visual Analogue Scale (VAS)) and radiographic results (e.g., Böhler and Gissane angle, height, width and joint reduction) were determined. Short- and long-term complications were documented. RESULTS: A total of 57 patients matched the inclusion criteria, from which 39 patients agreed to participate in this study (68%). The median follow-up was 6.5 years (range 2-16 years). Based on the AOFAS hindfoot score, 74% of the patients had a good-to-excellent long-term clinical result. Radiological results were satisfying with a median postoperative Böhler angle of 26° and 25° at follow-up. Complications occurred in 32% of all patients; mainly wound-healing problems were noted. Short-term complications did not influence mid- to longterm clinical results (p>0.05). Anatomic reconstruction of the calcaneus was associated with improved long-term clinical results (p<0.05). CONCLUSION: Despite the high complication rate following ORIF of a calcaneal fracture, complications do not affect mid- to long-term clinical outcome. Surgical treatment should focus on restoring the anatomy. Level of evidence: Therapeutic level IV. 17 of which were retained. The overall prevalence of dementia was 27.9% (range 2-51%). Only two studies compared demented and non-demented groups. In these studies significant increases in both mortality and complications were found. In summary, when investigating hip fractures, choosing appropriate objective endpoints is essential to ensure results are also applicable to patients with dementia. Voordrachten Complicaties na open repositie en interne fixatie van gedisliceerde intra-articulaire calcaneus fracturen hebben geen invloed op de langetermijn resultaten. R de Groot, AJ Frima, T Schepers, WH Roerdink Assistentensymposium traumachirurgie Soestduinen, 29 januari 2012 Wetenschappelijk overzicht 2012 - 2013 A successfull integration. Eddes EH IHI Orlando, USA, December 2012 Plug and Play registraties volgens een vast format. Eddes EH Hans Mak Zeist, 2012 Predictions for succesfull auditing. Eddes EH IKNL Utrecht, November 2012 De waarde van klinische kwaliteitsregistraties volgens een vast format. Eddes EH Delegatie Binnenlandse Zaken Leiden, september 2012 Plug and Play registraties volgens een vast format. Eddes EH Dutch Spine Week Amsterdam, juni 2012 Inzicht in kwaliteit door betrouwbare kwaliteitsregistraties. Eddes EH Nederlandse Vereniging voor Plastische Chirugie Mei 2012 66 67 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde Hepatic resection for metastatic melanoma in The Netherlands: survival and prognostic factors. de Ridder J, van Walsum M, Verhoef C, Nagtegaal I, de Wilt J; Dutch Liver Working Group. Melanoma Res. 2013 Feb;23(1):27-32. Collaborators (12) Liem MS Author information Department of aSurgical Oncology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. Abstract Patients with hepatic metastases of melanoma have a very poor prognosis, with a median overall survival of less than 6 months. There are several small heterogeneous studies that have shown an association with prolonged survival in those patients treated with hepatic resection, but the role of surgery remains unclear. We evaluated the safety and efficacy of hepatic resection in a population-based study in the Netherlands for patients with metastatic melanoma and assessed the factors that could affect disease-free and overall survival. Patients with hepatic melanoma metastases who underwent potentially curative resection were identified between 1994 until 2010 using the PALGA database, a nation-wide network and registry of histopathology and cytopathology in the Netherlands. They were retrospectively evaluated for clinical and pathological factors with respect to recurrence and survival using KaplanMeier curves to assess survival and univariate regression analysis for the assessment of potential prognostic factors. A total of 32 patients were identified in 15 hospitals, 19 men and 13 women. The median age of the patients at the time of hepatic resection was 52 years (range 27-69). Postoperative complications occurred in five patients (15%), without postoperative mortality. The median follow-up was 21 months (range 3-65). The median disease-free survival was 11 months (range 0-57) and the median overall survival was 29 months (range 4-66). Significant prognostic factors for overall survival in univariate analysis were the distribution and number of metastases, as well as the type of hepatic resection (major or minor). Hepatic resection in patients with resectable metastatic melanoma is safe and might be associated with a prolonged survival in a highly selected group of patients. Het starten van een registratie. Eddes EH DICA congres Bussum, april 2012 De waarde van klinische kwaliteitsregistraties volgens een vast format. Eddes EH Congres bevolkingsonderzoek Utrecht, februari 2013 Transparantie, keuzes en verbetering van zorg. Eddes EH DICA congres Bussem, april 2012 De waarde van klinische kwaliteitsregistraties volgens een vast format. Eddes EH Gemeente Eindhoven Eindhoven, maart 2013 Controversie in pancreascarcinoom. Nunspeet van L, Reemst PHM Post-SSO meeting van de NVCO Zeist, 18 april 2013 Betere zorg door clinical auditing. Eddes EH Boer en Croon Amsterdam, februari 2013 Kwaliteit van zorg en wetenschappelijk onderzoek. Eddes EH Nederlandse Vereniging voor Vaatchirurgie November 2013 Extramurale veneuze invasie bij coloncarcinomen. De Noo ME Najaarsvergadering NVVH Den Bosch, November 2013 Betere zorg door registraties? Eddes EH Nederlandse Vereniging voor Radiotherapeuten Rotterdam, november 2013 Van biobank naar kliniek: de connectie bij colorectale tumoren. De Noo ME Regiodag Heelkunde Zwolle, November 2013 DICA registraties en DICA knop, voer voor pathologen. Eddes EH Nederlandse Vereniging voor Pathologie Utrecht, november 2013 Extramurale veneuze invasie bij coloncarcinomen. De Noo ME Sessie Pathologie DSCA, DICA congres Amsterdam, juni 2013 Investeer in kwaliteit. Eddes EH DICA congres Amsterdam, juni 2013 Hoofdstuk pathologie De Noo ME, Van Krieken J Jaarrapportage Dutch Surgical Clinical Audit, DICA rapportage 2013 Wetenschappelijk overzicht 2012 - 2013 Heelkunde Heelkunde De waarde van klinische kwaliteitsregistraties volgens een vast format. Eddes EH Nederlandse Traumadagen Zwolle, juni 2013 68 69 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Posters Complications following the extended lateral approach for calcaneal fractures do not influence long-term outcome de Groot R, Frima AJ, Schepers T, Roerdink WH. European Congress of Trauma & Emergency Surgery Basel, Zwitserland, 12-15 mei 2012 Publicaties [Differences in Dutch guidelines for chronic renal damage: no major consequences for the practice]. [Article in Dutch] Sluiter HE. Ned Tijdschr Geneeskd. 2012;156(50):A5679. Source Deventer Ziekenhuis, afd. Interne Geneeskunde, Deventer, the Netherlands. Abstract The criteria in the 2009 Dutch National Transmural Agreement (LTA) for chronic renal damage are used in patient care. But in 2012, patient referral patterns have not fully adhered to this guideline. This commentary indicates that the availability of a similar 2009 guideline used by nephrologists in in-hospital care may cause confusion. As new evidence accumulates, it is reasonable to expect a new 2014 guideline that will bring the two guidelines together. This will lead to even greater adherence in referral patterns in the Netherlands. De waarde van de STOPPA procedure in de hedendaagse praktijk. Kortlandt F, de Noo ME, Frima AJ Chirurgendagen, Veldhoven, mei 2012 Fifteen years of experience with anal fistula surgery. Sprakel J, Eddes EH, de Noo ME Proctology conference St. Gallen, november 2012 Ultrasound imaging of colorectal liver metastases: still relevant or already outdated? Al Ali C, van Dijk RAJM, Bosker RJI, Klok CFM, Liem MSL Essen, Duitsland, 2013 Boek(bijdrage) Handboek colorectaal carcinoom / C.J.A. Punt De Tijdstroom, mei 2012 ISBN 9789058981967 Hoofdstuk : Kwaliteit van (oncologische) zorg in Nederland NE Kolfschoten, GA Gooiker, MW Wouters, RA Tollenaar, EH Eddes Heelkunde An unusual cause of hyperandrogenism. Wendker-van Wattum M, Wouters RS, van der Wal JE, Glaudemans AW, Wolffenbuttel BH. Neth J Med. 2012 Jan;70(1):41, 45. Wetenschappelijk overzicht 2012 - 2013 70 71 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Severe hepatitis with coagulopathy due to HSV-1 in an immunocompetent man. Wind L, van Herwaarden M, Sebens F, Gerding M. Neth J Med. 2012 Jun;70(5):227-9. Source Department of Internal Medicine, Deventer Hospital, the Netherlands. Abstract Severe hepatitis due to herpes simplex virus type 1 (HSV-1) in immunocompetent patients is a very rare event. The acute hepatitis may lead to fulminant deterioration of liver function and can be rapidly fatal. The diagnosis should be considered in case of severe hepatitis of unknown cause. Early consideration of HSV-1 hepatitis in the differential diagnosis in an adult patient, also with an apparently normal immune system, is important and early initiation of antiviral treatment may be lifesaving in this situation. The role of FDG PET-CT in the preoperative work up of colorectal liver metastasis. Al Ali C, Manders JMB, Smit FW, Bosker RJI, Liem MSL Essen, Duitsland, 2013 Segmental and global subclasses of class IV lupus nephritis have similar renal outcomes. Haring CM, Rietveld A, van den Brand JA, Berden JH. J Am Soc Nephrol. 2012 Jan;23(1):149-54. Author information Department of Nephrology, Radboud University, Nijmegen Medical Centre Abstract Whether renal outcomes differ between the segmental and global subclasses of diffuse proliferative (class IV) lupus nephritis is unknown. In this metaanalysis, we searched the literature in MEDLINE, EMBASE, five registries of clinical trials, and selected cohort studies and randomized, controlled trials that used the 2003 International Society of Nephrology and Renal Pathology Society classification of lupus nephritis in adult patients. Our endpoint was the composite of doubling of serum creatinine concentration or ESRD. In the eight studies included in the final analysis, the incidence of this endpoint varied between 0% and 67%. A funnel plot and Egger’s test did not suggest significant heterogeneity. The meta-analysis did not support a significant difference in renal outcome between the segmental (IV-S) and global (IV-G) subclasses (relative risk for class IV-G versus IV-S, 1.08; 95% confidence interval, 0.681.70). Meta-regression did not suggest that ethnicity or duration of follow-up influenced the association between histologic class and renal risk. In conclusion, the rate of doubling of serum creatinine concentration or of ESRD did not differ between patients with class IV-S and those with IV-G lupus nephritis. Source Department of Internal Medicine, Deventer Hospital, the Netherlands. Inventarisatie van potentieel geneesmiddelgerelateerde problemen bij oncologiepatiënten (ONCOMIND) Bulsink A, Boor SD, Imholz ALT, Brouwers JRBJ, Jansman FGA PW Wetenschappelijk Platform 2012;6:85-8. Abstract Zie Ziekenhuisfarmacie Wetenschappelijk overzicht 2012 - 2013 Multifactorial intervention with nurse practitioners does not change cardiovascular outcomes in patients with chronic kidney disease. van Zuilen AD, Bots ML, Dulger A, van der Tweel I, van Buren M, Ten Dam MA, Kaasjager KA, Ligtenberg G, Sijpkens YW, Sluiter HE, van de Ven PJ, Vervoort G, Vleming LJ, Blankestijn PJ, Wetzels JF. Kidney Int. 2012 Sep;82(6):710-7. Author information Department of Nephrology, University Medical Center Utrecht, Utrecht, The Netherlands. Abstract Strict implementation of guidelines directed at multiple targets reduces vascular risk in diabetic patients. Whether this also applies to patients with chronic kidney disease (CKD) is uncertain. To evaluate this, the MASTERPLAN Study randomized 788 patients with CKD (estimated GFR 20-70 ml/ min) to receive additional intensive nurse practitioner support (the intervention group) or nephrologist care (the control group). The primary end point was a composite of myocardial infarction, stroke, or cardiovascular death. During a mean follow-up of 4.62 years, modest but significant decreases 72 73 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Interne Geneeskunde Clinical correlates of ‘BRCAness’ in triple-negative breast cancer of patients receiving adjuvant chemotherapy. Oonk AM, van Rijn C, Smits MM, Mulder L, Laddach N, Savola SP, Wesseling J, Rodenhuis S, Imholz AL, Lips EH. Ann Oncol. 2012 Sep;23(9):2301-5. Author information Departments of Medical Oncology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121,1066 CX Amsterdam, The Netherlands. Abstract BACKGROUND: We have previously reported an array comparative genomic hybridization profile that identifies triple-negative breast cancers (TNBC), with BRCA1 dysfunction and a high sensitivity to intensified dose bifunctional alkylating agents. To determine the effect of conventional-dose chemotherapy in patients with this so-called BRCA1-like profile, clinical characteristics and survival were studied in a large group of TNBC patients. PATIENTS AND METHODS: DNA was isolated and BRCA1-like status was assessed in 101 patients with early-stage TNBC receiving adjuvant cyclophosphamide-based chemotherapy. Clinical characteristics and survival were compared between BRCA1-like and non-BRCA1-like groups. Results Sixtysix tumors (65%) had a BRCA1-like profile. Patients with BRCA1-like tumors tended to be younger and had more often node-negative disease (P = 0.06 and P = 0.03, respectively). Five-year recurrence-free survival was 80% for the BRCA1-like group and 75% for the non-BRCA1-like group (P = 0.35). T stage was the only variable significantly associated with survival. CONCLUSIONS: BRCA1-like tumors share clinical features, like young age at diagnosis and similar nodal status, with breast cancers in BRCA1 mutation carriers. Their prognosis is similar to that of non-BRCA1-like tumors when conventional-dose chemotherapy is administered. TNBCs that are classified as BRCA1-like may contain a defect in homologous recombination and could, in theory, benefit from the addition of poly ADP ribose polymerase inhibitors. were found for blood pressure, LDL cholesterol, anemia, proteinuria along with the increased use of active vitamin D or analogs, aspirin and statins in the intervention group compared to the controls. No differences were found in the rate of smoking cessation, weight reduction, sodium excretion, physical activity, or glycemic control. Intensive control did not reduce the rate of the composite end point (21.3/1000 person-years in the intervention group compared to 23.8/1000 person-years in the controls (hazard ratio 0.90)). No differences were found in the secondary outcomes of vascular interventions, all-cause mortality or end-stage renal disease. Thus, the addition of intensive support by nurse practitioner care in patients with CKD improved some risk factor levels, but did not significantly reduce the rate of the primary or secondary end points. uiteen van 40 tot 80 mmHg en de gemiddelde TcpO2-waarden in de zes subgroepen verschilden niet significant van elkaar (chi-square = 3,18,9 = 0.673). CONCLUSIES: Zowel de intraobserverovereenstemming als de interobserverovereenstemming is erg goed, hoewel er een aanzienlijke spreiding wordt gezien (bij beperkt aantal referentiewaarden). Hier moet rekening mee worden gehouden bij het volgen van de NIV-richtlijk bij het opsporen van kritische ischemie. De TcpO2-waarde bij patiënten met diabetes mellitus zonder een voetulcus neemt niet significant af met de leeftijd (in onze beperkte categorie referentiewaarden). Characteristics of potential drug-related problems among oncology patients. Bulsink A, Imholz AL, Brouwers JR, Jansman FG Int J Clin Pharm. 2013 Jun;35(3):401-7. Samenvatting: zie Ziekenhuisfarmacie Wetenschappelijk overzicht 2012 - 2013 VEGF levels in plasma in relation to platelet activation, glycemic control, and microvascular complications in type 1 diabetes. Schlingemann RO, Van Noorden CJ, Diekman MJ, Tiller A, Meijers JC, Koolwijk P, Wiersinga WM. Diabetes Care. 2013 Jun;36(6):1629-34. Author information Ocular Angiogenesis Group, Departments of Ophthalmology and Cell Biology and Histology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands. Abstract OBJECTIVE: Increased levels of vascular endothelial growth factor (VEGF) in human plasma samples have suggested that circulating VEGF is a cause of endothelial dysfunction in diabetes mellitus. However, artificial release of VEGF from platelets as a source of VEGF in plasma samples, as also occurs in serum samples, has not been ruled out in these studies. RESEARCH DESIGN AND METHODS: We determined VEGF levels in plasma collected in both citrate and PECT, a medium that inactivates platelets, in a cross-sectional cohort of 21 healthy subjects and 64 patients with type 1 diabetes. In addition, we evaluated whether VEGF levels in both types of plasma correlated with the presence of diabetes, glycemic control, markers of in vivo or ex vivo platelet activation, and degree of diabetic retinopathy and nephropathy. RESULTS: VEGF levels were invariably low in PECT plasma of both nondiabetic and diabetic subjects and were unrelated to any other diabetes-related variable studied. In contrast, VEGF levels in citrate plasma were 150% higher in diabetic patients than in control subjects and correlated with diabe74 75 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Interne Geneeskunde Transcutane zuurstofmeting is betrouwbaar toepasbaar bij patiënten met diabetes gecompliceerd door een voetulcus. Nederlands Tijdschrift voor Diabetologie 2013;11(2):60-64 Dijkstra-Bloemendal AH, Wind LJN, Gerding MN Samenvatting DOEL: Het meten van de intra- en interobservervariabiliteit van de transcutane zuurstofmeting (TcpO2) bij patiënten met een diabetisch voetulcus om ischemie vroegtijdig op te sporen. Daarnaast het vaststellen van referentiewaarden in een groep patiënten met diabetes mellitus (DM) zonder een voetulcus naar leeftijd en geslacht. METHODEN: Het onderzoek werd uitgevoerd in het Deventer Ziekenhuis en in een podotherapiepraktijk. Bij 25 patiënten werd driemaal de TcpO2waarde gemeten; één meting werd uitgevoerd door een paramedicus en twee metingen werden uitgevoerd door de onderzoeker. Intra- en interobservervariabiliteit werden onderzocht door het berekenen van de intraclass correlation coëfficiënt (ICC) en werden grafisch weergegeven met behulp van Bland-Altman-plots. Voor het genereren van referentiewaarden werden 43 patiënten met diabetes mellitus onder behandeling van een podotherapeut geïncludeerd en geclassificeerd in zes subgroepen, gestratificeerd naar geslacht en leeftijd per decade. De TcpO2-waarden in de subgroepen werden met elkaar vergeleken met behulp van een Kruskal-Wallis-toets. RESULTATEN: Analyses van de intraobservervariabiliteit lieten een Intraclass correlation coëfficiënt van 0.90 (95%-betrouwbaarheidsinterval 0.79-0.95) zien. Analyses van de interobservervariabiliteit werden twee keer uitgevoerd en lieten een ICC van respectievelijk 0.81 (95%-betrouwbaarheidsinterval 0.62-0.91) en 0.88 (95%-betrouwbaarheidsinterval 0.74-0.94) zien. BlandAltman-plots lieten zien dat de observervariabiliteit gelijk verdeeld was. Echter, het 95%-betrouwbaarheidsinterval van het intraobserververschil was -3,5-13,7 en het 95%-betrouwbaarheidsinterval van het interobserververschil was respectievelijk -4,6-19,1 en 2,3-15,3. Referentiewaarden in ons ziekenhuis liepen tes-related variables. Multiple linear regression analysis showed that levels of platelet factor 4, a marker for ex vivo platelet activation, and HbA1c were the independent predictors of VEGF levels in citrate plasma. Platelet activation, in vivo and ex vivo, was similar in diabetic persons and control subjects. CONCLUSIONS: Like serum, citrate plasma is not suitable for reliable measurements of circulating VEGF. The low levels of VEGF in vivo, as represented by measurements in PECT plasma in our study, do not support a role of circulating VEGF in endothelial dysfunction in type 1 diabetes. Higher levels of VEGF in citrate plasma samples of diabetic persons do not represent the in vivo situation, but mainly originate from higher artificial ex vivo release from platelets correlating with the degree of glycemic control. RESULTS: Of the tumours, 66-69% had a BRCA1-like aCGH profile and 2737% showed BRCA1 promoter methylation. BRCA1-germline mutations and BRCA1 promoter methylation were mutually exclusive events (P=1 × 10(-5)). BRCAness was associated with younger age and grade 3 tumours. Chemotherapy response was significantly higher in BRCA1-mutated tumours, but not in tumours with BRCAness (63% (12 out of 19) vs 35% (18 out of 52) pathological complete remission rate, respectively). CONCLUSION: The majority of the TNBCs show BRCAness, and those tumours share clinicopathological characteristics with BRCA1-mutated tumours. A better characterisation of TNBC and the presence of BRCAness could have consequences for both hereditary breast cancer screening and the treatment of these tumours. Treatment with lenalidomide in myelodysplastic syndromes with deletion 5q: results from the Dutch named patient program. Abouyahya I, Alhan C, Westers TM, te Boekhorst PA, Kappers-Klunne MC, Coenen JL, Heyning FH, Huls GA, de Wolf JT, Imholz AL, Koene HR, Veth G, de Kruijf EJ, Muus P, Planken EV, Segeren CM, Vasmel WL, van der Velden AM, Velders GA, Koedam J, Ossenkoppele GJ, van de Loosdrecht AA. Leuk Lymphoma. 2013 Apr;54(4):874-7. No abstract available Triple-negative breast cancer: BRCAness and concordance of clinical features with BRCA1-mutation carriers. Lips EH, Mulder L, Oonk A, van der Kolk LE, Hogervorst FB, Imholz AL, Wesseling J, Rodenhuis S, Nederlof PM. Br J Cancer. 2013 May 28;108(10):2172-7. Author information Department of Molecular Pathology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands. Abstract BACKGROUND: BRCAness is defined as shared tumour characteristics between sporadic and BRCA-mutated cancers. However, how to exactly measure BRCAness and its frequency in breast cancer is not known. Assays to establish BRCAness would be extremely valuable for the clinical management of these tumours. We assessed BRCAness characteristics frequencies in a large cohort of triple-negative breast cancers (TNBCs). METHODS: As a measure of BRCAness, we determined a specific BRCA1like pattern by array Comparative Genomic Hybridisation (aCGH), and BRCA1 promoter methylation in 377 TNBCs, obtained from 3 different patient cohorts. Clinicopathological data were available for all tumours, BRCA1-germline mutation status and chemotherapy response data were available for a subset. Wetenschappelijk overzicht 2012 - 2013 76 77 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Interne Geneeskunde A core physical examination in internal medicine: what should students do and how about their supervisors? Haring CM, van der Meer JW, Postma CT. Med Teach. 2013 Sep;35(9):e1472-7. Author information Radboud University Nijmegen Medical Centre, The Netherlands. Abstract BACKGROUND: Performance of a focused physical examination will induce a high cognitive load for medical students in the early phase of the clinical clerkships. AIM: To come to a workable and clinically applicable standard physical examination for medical students to be used in every new patient in the daily clinical practice of internal medicine. METHOD: A questionnaire held among physicians that supervise students during the clerkship of internal medicine in one Dutch training region. RESULTS: Of the complete list of physical examination 55 items were considered to be an integral part of the standard general physical examination for medical students. Most emphasized were elements of the physical examination aimed at general parameters, thorax and abdomen, vascular status, lymph nodes, spinal column, skin and some parts of the neurological examination. The standard physical examinations performed by supervisors themselves contain fewer items than they expected from the students. The expectations a supervisor has towards the student correlates with the frequency with which they apply the various components in their own physical examination. CONCLUSION: This study provides us with a ‘core’ physical examination for medical students that can be applied in the early phase of the clinical clerkships. Nurse Practitioner Care Improves Renal Outcome in Patients with CKD. Peeters MJ, van Zuilen AD, van den Brand JA, Bots ML, van Buren M, Ten Dam MA, Kaasjager KA, Ligtenberg G, Sijpkens YW, Sluiter HE, van de Ven PJ, Vervoort G, Vleming LJ, Blankestijn PJ, Wetzels JF. J Am Soc Nephrol. 2013 Oct 24. [Epub ahead of print] Author information Department of Nephrology, Radboud University Medical Center, Nijmegen, The Netherlands; Abstract Treatment goals for patients with CKD are often unrealized for many reasons, but support by nurse practitioners may improve risk factor levels in these patients. Here, we analyzed renal endpoints of the Multifactorial Approach and Superior Treatment Efficacy in Renal Patients with the Aid of Nurse Practitioners (MASTERPLAN) study after extended follow-up to determine whether strict implementation of current CKD guidelines through the aid of nurse practitioners improves renal outcome. In total, 788 patients with moderate to severe CKD were randomized to receive nurse practitioner support added to physician care (intervention group) or physician care alone (control group). Median follow-up was 5.7 years. Renal outcome was a secondary endpoint of the MASTERPLAN study. We used a composite renal endpoint of death, ESRD, and 50% increase in serum creatinine. Event rates were compared with adjustment for baseline serum creatinine concentration and changes in estimated GFR were determined. During the randomized phase, there were small but significant differences between the groups in BP, proteinuria, LDL cholesterol, and use of aspirin, statins, active vitamin D, and antihypertensive medications, in favor of the intervention group. The intervention reduced the incidence of the composite renal endpoint by 20% (hazard ratio, 0.80; 95% confidence interval, 0.66 to 0.98; P=0.03). In the intervention group, the decrease in estimated GFR was 0.45 ml/min per 1.73 m2 per year less than in the control group (P=0.01). In conclusion, additional support by nurse practitioners attenuated the decline of kidney function and improved renal outcome in patients with CKD. Abstract OBJECTIVE: Most of the biomedical research is performed in University Medical Centers (UMC’s). Increasingly, however, biomedical research is also done in non-academic large teaching hospitals, united in the Organization for Topclinical Hospitals (STZ) in the Netherlands. The objective of this study was to compare citation scores of biomedical publications from UMC’s and STZ hospitals. DESIGN: Bibliometric analysis. METHOD: The Center for Science and Technology Studies of the University of Leiden, the Netherlands, annually analyzes the volume and quality (reflected by normalized citation scores) of the publications of all UMC’s in the Netherland. Recently, also for STZ hospitals a similar analysis has been performed. RESULTS: Research publications from UMC’s in the Netherland have normalized mean citation scores that are far above the mean world average. The normalized mean citation score of publications from STZ hospitals is lower when research is done independent of a UMC, whereas research that is a combined effort of UMC’s and STZ hospitals has a very high mean normalized citation score. CONCLUSION: The Netherlands produces a relatively large volume of biomedical research and publications. Based on citation analysis research done in collaboration between UMC’s and STZ hospitals has a very high quality. As most STZ hospitals mostly collaborate with a neighbouring UMC, the formation of research networks that overlap with existing teaching and training networks, could provided the necessary infrastructure for further stimulating this collaborative research. Verschillen in richtlijnen chronische nierschade: geen grote consequenties voor de praktijk. Commentaar. Ned Tijdschr Geneesk. 2013;157:55-6 Sluiter HE Collaborations Wetenschappelijk overzicht 2012 - 2013 Fibroblast growth factor 23 is associated with proteinuria and smoking in chronic kidney disease: an analysis of the MASTERPLAN cohort. Vervloet MG, van Zuilen AD, Heijboer AC, ter Wee PM, Bots ML, Blankestijn PJ, Wetzels JF; MASTERPLAN group study. BMC Nephrol. 2012 Apr 24;13:20. Collaborators (21) Sluiter H 78 79 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Interne Geneeskunde [Biomedical research in the Netherlands: high quality due to cooperation between University Medical Centers and non-academic large teaching hospitals]. [Article in Dutch] Levi M, Sluiter HE, van Leeuwen T, Rook M, Peeters G. Ned Tijdschr Geneeskd. 2013;157(26):A6081. Author information Academisch Medisch Centrum/Universiteit van Amsterdam, Raad van Bestuur, Amsterdam, the Netherlands. Author information Department of Nephrology and ICaR-VU, VU university medical centre, Amsterdam, The Netherlands. Abstract BACKGROUND: Fibroblast growth factor 23 (FGF23) has emerged as a risk factor for cardiovascular disease and mortality throughout all stages of chronic kidney disease (CKD), independent from established risk factors and markers of mineral homeostasis. The relation of FGF23 with other renal and non-renal cardiovascular risk factors is not well established. METHODS: Using stored samples, plasma FGF23 was determined in 604 patients with moderate to severe kidney disease that participated in the MASTERPLAN study (ISRCTN73187232). The association of FGF23 with demographic and clinical parameters was evaluated using multivariable regression models. RESULTS: Mean age in the study population was 60 years and eGFR was 37 (± 14) ml/min/1.73 m(2). Median proteinuria was 0.3 g/24 hours [IQR 0.1-0.9]. FGF23 level was 116 RU/ml [67-203] median and IQR. Using multivariable analysis the natural logarithm of FGF23 was positively associated with history of cardiovascular disease (B = 0.224 RU/ml; p = 0.002), presence of diabetes (B = 0.159 RU/ml; p = 0.035), smoking (B = 0.313 RU/ml; p < 0.001), phosphate level (B = 0.297 per mmol/l; p = 0.0024), lnPTH (B = 0.244 per pmol/l; p < 0.001) and proteinuria (B = 0.064 per gram/24 hrs; p = 0.002) and negatively associated with eGFR (B = -0.022 per ml/min/1.73 m(2); p < 0.001). CONCLUSIONS: Our study demonstrates that in patients with CKD, FGF23 is related to proteinuria and smoking. We confirm the relation between FGF23 and other cardiovascular risk factors. METHODS: We selected non-transplanted patients with CKD stages 3-5 who participated in the MASTERPLAN study, a randomized controlled trial in patients with CKD. Kidney failure was defined as the initiation of chronic dialysis or kidney transplantation within 5 years. Patients who died before kidney failure were censored. Patients followed for <5 years, who did not develop kidney failure and did not die, were excluded. The 5-year kidney failure risk was predicted using three different models developed by Tangri et al. and compared with the actual kidney failure rate in MASTERPLAN. Model performance was evaluated using the area under the receiver operating characteristic curve (ROC-AUC), the net reclassification index (NRI) and by comparing the observed and predicted rates of kidney failure. RESULTS: A total of 595 patients were included; 114 developed kidney failure. (Overall observed kidney failure risk in our cohort was 5% lower than in the Canadian validation cohort.) Discrimination of the eight-variable model [including age, sex, estimated glomerular filtration rate (eGFR), albuminuria, calcium, phosphate, bicarbonate, albumin] was similar to that of the four-variable model (including age, sex, eGFR, albuminuria) and the three-variable model (including age, sex, eGFR); ROC-AUCs were 0.89 [95% confidence interval (CI) 0.86-0.92], 0.88 (95% CI 0.85-0.91) and 0.88 (95% CI 0.85-0.92), respectively. Using the NRI, the eight-variable model slightly outperformed the four-variable model (NRI 6.5%) and the three-variable model (NRI 12.4%). The mean differences between the observed and predicted kidney failure risk were -4.0, -7.1 and -7.4% for the eight-, four-, and three-variable model, respectively. CONCLUSIONS: The KFRE accurately predicted the progression to kidney failure in European CKD patients. Discrimination of the three models was similar. Calibration of the eight-variable model was slightly better than that of the simpler models. We question whether this outweighs its added complexity. Wetenschappelijk overzicht 2012 - 2013 Posters Metformin elimination by haemodialysis versus continuous venovenous haemofiltration in renal failure patients with metformin associated lactic acidosis. Bulsink A, Vermeij CG, Doorenbos CJ, van Berlo-van de Laar IRF Nederlandse Ziekenhuisfarmaciedagen Nunspeet, 11 mei 2012 Dragerschap van Extended-Spectrum Beta-Lactamases (ESBL’s) bij hemodialysepatienten: retrospectief onderzoek naar het nut van routinematige screening naar ESBL-dragerschap en contactisolatie tijdens dialyseren. 80 81 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Interne Geneeskunde Validation of the kidney failure risk equation in European CKD patients. Peeters MJ, van Zuilen AD, van den Brand JA, Bots ML, Blankestijn PJ, Wetzels JF; MASTERPLAN Study Group. Nephrol Dial Transplant. 2013 Jul;28(7):1773-9. Collaborators (13) Sluiter HE Author information Department of Nephrology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. Abstract BACKGROUND: Patients with chronic kidney disease (CKD) are at risk for progression to kidney failure. Using data of Canadian CKD patients, Tangri et al. recently developed models to predict the progression of CKD stages 3-5 to kidney failure within 5 years. We validated this kidney failure risk equation (KFRE) in European CKD patients. Oosterwijk PR, Bergervoet PHM, Van der Zwet WC, Sluiter HE Wetenschapsavond Deventer Ziekenhuis Deventer, 1 november 2012 Wetenschappelijke Stages NEO-ZOTAC: Efficacy of NEOadjuvant chemotherapy (TAC) with or without ZOledronic acid for patients with HER2-negative large resectable or locally advanced breast cancer. CharehbiliA, Van de Ven S, Liefers GJ, Smit VTHBM, Putter H, Heijns JB, Van Warmerdam LJ, Kessels L, Dercksen M, Pepels MJ, Maartense E, Van Laarhoven H, Vriens B, Wasser MN, Hamdy NAT, Meershoek-Klein Kranenbarg EM, Van Leeuwen-Stok AE, Van de Velde CJH, Nortier JWR, Kroep JR ASCO 2013 Chicago, USA, 31 mei 2013 DIRECT: A phase II/III randomized trial with Dletary REstriction as an adjunct to neoadjuvant ChemoTherapy for HER2-negative breast cancer. De Groot S, Vreeswijk MPG, Smit VTHBM, Heijns JB, Imholz ALT, Kessels LW, Dercksen MW, Jager A, Los M, Weijl NI, Smorenburg CH, Portielje JEA SABCC San Antonio, USA, 10 december 2013 Interne Geneeskunde Boek(bijdrage) Klinisch onderwijs en opleiden in de praktijk: Deel 2: organiseren, begeleiden, leiderschap. Red. : T. de Vries, P. Brand, E. Heineman Hoofdstuk 16: De visitatie H.E. Sluiter Prelum uitgevers, Houten, 2012 ISBN: 9789085621164 Wetenschappelijk overzicht 2012 - 2013 82 83 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Dragerschap van Extended-Spectrum Beta-Lactamases (ESBL’s) bij hemodialysepatiënten Retrospectief onderzoek naar het nut van routinematige screening naar ESBL-dragerschap en contactisolatie tijdens dialyseren. Auteur: P.R.Oosterwijk Begeleider H.E.Sluiter Locatie: Hemodialyse afdeling, Deventer Ziekenhuis Periode: 21 november 2011 - 19 april 2012 Achtergrond: Antibiotica resistentie ten gevolge van Extended-Spectrum Beta-Lactamase (ESBL) producerende bacteriën neemt toe. Wanneer deze bacteriën infecties veroorzaken is er een beperkt aantal geschikte antibiotica voorhanden. Hemodialysepatiënten worden gezien als risicogroep voor dragerschap met ESBL-positieve bacteriën, maar de epidemiologische gegevens hierover bij deze patiëntengroep zijn beperkt. Methode: In een retrospectieve studie, over de periode maart 2009 tot maart 2012, werd de prevalentie van ESBL-positieve patiënten binnen de dialysepopulatie van het Deventer Ziekenhuis op 6 screeningsmomenten bepaald. Bij patiënten die ESBL-positief kweekten tijdens de screeningen werd vervolgens contactisolatie toegepast. Om de ESBL-positieve dialysepatiënten te vergelijken met ESBL-negatieve dialysepatiënten, zijn in totaal 120 dialysepatiënten uit de 6 screeningsmomenten geïncludeerd in een case control onderzoek. Een risicofactor analyse voor dragerschap met ESBL’s is gedaan. De overleving tussen beide groepen is met elkaar vergeleken en met Amplified-Fragment Length Polymorphism (AFLP)typeringen werd nagegaan of er sprake was van mogelijke verspreiding van identieke ESBL-positieve bacteriestammen. Resultaten: Over de studieperiode varieerde de prevalentie van ESBL’s bij dialysepatiënten van 5,8% tot 11,1%, maar veranderde niet significant. De prevalentie van de dialysepopulatie kwam overeen met de puntprevalentie (8,3%) van de algemene patiëntenpopulatie in het verzorgingsgebied van het Deventer Ziekenhuis. In 3 gevallen zijn er identieke bacteriestammen bij meerdere patiënten gevonden. Daadwerkelijke verspreiding werd niet aangetoond. Uit een multivariate risicofactor analyse bleken voorafgaand antibioticagebruik (OR: 6,167 95%CI: 2,288-16,624) en verblijf in een verzorgings- of verpleeghuis (OR: 3,697 95%CI: 1,171-11,674) de enige significante risicofactoren voor dragerschap met een ESBL. De overleving verschilde niet. Conclusies: De prevalentie van ESBL-positieve dialysepatiënten is niet significant veranderd over de studieperiode en de prevalentie lijkt niet te Changes in circulating vitamin D levels as a predictor for pathological response to neoadjuvant chemotherapy (NCT) in breast cancer (BC): A Dutch Breast Cancer Trialists’ Group (BOOG) side-study. Charehbili A, Hamdy NAT, Smit VTHBM, Liefers GJ, Putter H, MeershoekKlein Kranenbarg E, Heijns JB, Van Warmerdam LJ, Kessels L, Dercksen M, Pepels MJ, Maartense E, Van Laarhoven H, Vriens B, Van Leeuwen-Stok E, Van de Velde CJH, Nortier JWR, Kroep JR San Antonio Breast Cancer Symposium San Antonio, USA, 10 december 2013 verschillen met de algemene patiëntenpopulatie. ESBL-dragerschap is van veel factoren afhankelijk, waarbij voorafgaand antibioticagebruik en verblijf in een verzorgings- of verpleeghuis een belangrijke rol lijken te spelen. ESBLdragerschap heeft geen invloed op de uiteindelijke overlevingsduur van dialysepatiënten. Ccr-ur 43 ± 12 ml/min. De verdeling van de patiënten over de CKD stadia, gebaseerd op de verschillende manieren van GFR bepaling, liet grote verschillen zien tussen de methoden. In de hierop volgende analyses werd duidelijk dat ook in dit cohort de Ccr de nierfunctie overschat en dat de Cur de nierfunctie onderschat. Weergegeven in spreidingsdiagrammen leek de Ccr-ur de GFR het beste weer te geven en de relatief hoge concordantie correlatie coëfficiënt van de Ccr-ur en de Ciot leek dit te bevestigen. ‘Difference plots’ lieten zien dat de Ccr-ur de GFR (Ciot) goed benadert als de GFR onder de 45 ml/min is, maar dat de Ccr-ur hierboven een significante onderschatting (P < 0.005) geeft van de GFR. CONCLUSIE: Deze studie toont aan dat de Ccr-ur een beter inzicht geeft in de GFR dan de MDRD-formule of de Ccr, in niertransplantatiepatiënten met chronische nierinsufficiëntie stadium 3B of stadium 4. Dus het is zonde om de ureumklaring links te laten liggen; er is een rol weggelegd voor de Ccr-ur als een specialist meer precisie wil dan de eGFR (MDRD) hem kan bieden. Wetenschappelijk overzicht 2012 - 2013 Immunohistochemical biomarkers and their relation with (diseasefree) survival in BRCA1-like and non-BRCA1-like subgroups in triplenegative breast cancer Auteur : M. Maats Begeleider: A.L.T. Imholz M.M. Smits Periode : 3 oktober 2011 – 17 februari 2012 HER2 positivity in gastric and esophageal adenocarcinoma : clinicopathological analysis and comparison Auteur : T. Koopman Begeleider: A.L.T. Imholz M.M. Smits Periode : 1 november 2012 – 24 maart 2013 Promoties Non-alcoholic fatty liver disease: from patient to population. E.M. Koehler Erasmus Universiteit Rotterdam 2013 Chronic hepatitis C infection: clinical and societal evaluations. D.M. Hotho Erasmus Universiteit Rotterdam 2013 84 85 Wetenschappelijk overzicht 2012 - 2013 Interne Geneeskunde Interne Geneeskunde Ureumklaring: Herleving van een oude analytische techniek? Een retrospectieve pilotstudie over het gebruik van de gemiddelde klaring van kreatinine en ureum voor het maken van een nauwkeurige schatting van de nierfunctie, onderzocht bij niertransplantatiepatiënten Auteur: S.C.C. Korste Begeleider: H.E. Sluiter Locatie: Nefrologie, Interne Geneeskunde, Deventer Ziekenhuis Periode: oktober 2011 – februari 2012 Samenvatting INLEIDING: Chronische nierinsufficiëntie (CKD) is een wereldwijd gezondheidsprobleem met een toenemende incidentie. Voor een goede behandeling van deze ziekte is het belangrijk om op de hoogte te zijn van de nierfunctie, welke het beste beschreven wordt door de glomerulaire filtratiesnelheid (GFR). De GFR kan worden gemeten met een ‘gouden standaard’ methode (bv. de klaring van 125I-iothalamaat (Ciot)). Ook kan de GFR worden geschat, bijvoorbeeld met de op serum kreatinine, geslacht en leeftijd gebaseerde MDRD-formule (resulterend in een geschatte GFR (eGFR)), of met de klassieke kreatinineklaring (Ccr) die gebruik maakt van 24 uurs urine verzameling. Helaas geven al deze methoden verschillende GFR waarden. Omdat de Ccr de nierfunctie overschat en de ureumklaring (Cur) de nierfunctie onderschat, is het aannemelijk dat het gemiddelde van deze twee waarden de nierfunctie benadert. Dit gemiddelde wordt in de praktijk soms gebruikt als maat voor de GFR bij CKD stadium 5. Wij hebben de hypothese getoetst dat het gemiddelde van de kreatinine- en ureumklaring (Ccr-ur) een nauwkeuriger weergave geeft van de GFR dan de MDRD-formule of de Ccr, in patiënten met chronische nierinsufficiëntie stadium 3 of 4. METHODE: In deze retrospectieve pilotstudie werden 44 patiënten geïncludeerd (55% man, gem. 54 ± 12 jaar). Allen hebben een transplantatienier ontvangen in het Universitair Medisch Centrum Groningen, worden vervolgd in het Deventer Ziekenhuis, hebben een Ciot ondergaan en hebben CKD stadium 3 of 4. In dit cohort werd de Ccr-ur vergeleken met de eGFR (MDRD) en de Ccr, wat betreft de mate van GFR (Ciot) benadering. RESULTATEN: Gebaseerd op de eGFR (MDRD) hadden 39 patiënten CKD stadium 3 en 5 patiënten CKD stadium 4. De Ciot was 50 ± 17 ml/min, de eGFR (MDRD) 42 ± 10 ml/min/1,73m2, de Ccr 59 ± 16 ml/min en de Kaakchirurgie Keel Neus Oorheelkunde Publicaties Publicaties Long-term results of maxillomandibular advancement surgery in patients with obstructive sleep apnoea syndrome. Jaspers GW, Booij A, de Graaf J, de Lange J. Br J Oral Maxillofac Surg. 2013 Apr;51(3):e37-9. Source Department of Oral and Maxillofacial Surgery, Deventer Hospital, Deventer, The Netherlands. Abstract This article describes the eight-year follow-up results of maxillomandibular advancement (MMA) in a cohort of patients with obstructive sleep apnea syndrome (OSAS). Results are promising by means of Apnoea Hypopnoea Index (AHI) and Epworth Sleepiness Scale (ESS). A possible case of complex regional pain syndrome of the nose? Faraj-Hakim S, Bleys RL, Buwalda J, de Ru JA. B-ENT. 2012;8(1):37-42. Author information Faculty of Medicine, University Medical Centre Utrecht, Utrecht, the Netherlands. Abstract OBJECTIVE: We present a case report of a patient with a putative diagnosis of complex regional pain syndrome of the nose. We would like to bring this disorder to the attention of rhinologists. CASE REPORT: A 53-year-old man presented with a history of extreme, constant, debilitating pain in his nose that started after he underwent several extensive nasal surgeries. Examination revealed atrophic nasal mucous membranes at the nasal septum. No other abnormalities were found. The pain did not diminish despite administration of analgesics and neuropathic pain medications. We propose a diagnosis of complex regional pain syndrome of the nose. CONCLUSION: The large number of nasal surgeries performed worldwide and the far reaching consequences of this debilitating syndrome indicate that it merits further investigation to determine whether it is a distinct disorder that should be recognized as such. Pathology quiz case 1. Allergic fungal rhinosinusitis (AFRS). Lammers MJ, Lo Galbo AM, Buwalda J. Arch Otolaryngol Head Neck Surg. 2012 Apr;138(4):426-8. Author information University Medical Center Utrecht, Utrecht, the Netherlands. Kaakchirurgie Een peuter met één dik oor. Mandigers LCJM, Bom SJH, Dassel ACM, Houwing RH, Van Ginkel CJW Ned Tijdschr KNO-heelkunde 2013;19:115-6 Wetenschappelijk overzicht 2012 - 2013 86 87 Wetenschappelijk overzicht 2012 - 2013 Keel Neus Oorheelkunde Ontoereikende diagnostiek bij een fractuur van het collum mandibulae. Valstar MH, Jaspers GW, de Lange J. Ned Tijdschr Tandheelkd. 2013;120:151-153. Samenvatting Een 13-jarige jongen presenteerde zich bij een mond-, kaak- en aangezichtschirurg na een val van zijn skateboard met pijn aan zijn kin en preauculaire pijn. Er werden op een panoramische röntgenopname geen aanwijzingen gevonden voor een fractuur van het collum mandibulae. Na 2 weken werd hij door zijn orthodontist naar de afdeling Mond-, Kaak- en Aangezichtschirurgie van een medisch centrum verwezen voor een teruggekeerde klasse IIImalocclusie na een kortgeleden afgeronde orthodontische behandeling van dit probleem. Een computertomogram toonde een fractuur van het collum mandibulae. Bij verdenking op een dergelijke fractuur is altijd beeldvorming uit 2 richtingen noodzakelijk Kindergeneeskunde and long enough to prevent relapse. Further research should focus on the optimal treatment protocol; the actual percentage of non-responders and also the mechanism of resistance to propranolol is unknown and needs to be illuminated. Publicaties Een peuter met één dik oor. Mandigers LCJM, Bom SJH, Dassel ACM, Houwing RH, Van Ginkel CJW Ned Tijdschr KNO-heelkunde 2013;19:115-6 Wetenschappelijk overzicht 2012 - 2013 Collaborations The expert network and electronic portal for children with respiratory and allergic symptoms: rationale and design. Zomer-Kooijker K, van Erp FC, Balemans WA, van Ewijk BE, van der Ent CK; Expert Network for Children with Respiratory and Allergic Symptoms. BMC Pediatr. 2013 Jan 16;13:9. Collaborators (10) Gorissen DM Author information Department of Pediatric Pulmonology and Allergology, Wilhelmina Children’s Hospital/University Medical Center Utrecht, PO Box 85090, 3508, Utrecht, AB, The Netherlands. Abstract Data on baseline characteristics of children with asthma to predict individual treatment responses are lacking. We aimed to set up a data-collection system which can easily fill this gap in clinical practice.A web-based application was developed, named ‘Portal for children with respiratory and allergic symptoms’, hereafter called Electronic Portal (EP). It contains health- and disease-related questionnaires on respiratory- and allergic diseases. All patients, 1-18 years of age, with respiratory- and/or allergic complaints are invited to enter the EP before their first visit. By using the EP large amounts of data, gathered during routine patient care can be used for research purposes. This may help to further investigate the different treatment related asthma phenotypes and will be helpful to monitor risk factors for other atopic diseases and respiratory infections. 88 89 Wetenschappelijk overzicht 2012 - 2013 Kindergeneeskunde Kindergeneeskunde Propranolol treatment in life-threatening airway hemangiomas: a case series and review of literature. Broeks IJ, Hermans DJ, Dassel AC, van der Vleuten CJ, van Beynum IM. Int J Pediatr Otorhinolaryngol. 2013 Nov;77(11):1791-800. Author information Department of Pediatrics, Deventer Hospital, Deventer, The Netherlands. Abstract OBJECTIVES: Infantile hemangiomas (IHs) in the airway may be potentially life-threatening during the proliferative phase. Available treatments like oral corticosteroids (OCS) and chemotherapeutic agents usually showed variable responses and serious side effects. Propranolol is a new and promising treatment option. METHODS: A case series of five IH patients with airway involvement is presented, supplemented with a review of literature. Propranolol treatment (2.0-3.0mg/kg/day) was initiated between 3 weeks and 6 months of age. Three cases were treated with propranolol monotherapy, 2 cases with OCS primarily and propranolol secondarily, in which treatment with OCS could be reduced rapidly. RESULTS: In our case series a dramatic, fast response was observed in all cases, with a permanent effect after discontinuation in four cases. In one patient a relapse of airway problems occurred two months after discontinuation of propranolol at 16 months of age; this resolved after re-start of propranolol. Review of literature together with these five cases showed 81 patients with airway IHs treated with propranolol. Propranolol was effective in 90% of the cases and seven patients were classified as non-responders. Eight IHs relapsed while weaning of propranolol or after discontinuation; dose adjustment or restart was effective in most cases but one patient appeared resistant to therapy. CONCLUSIONS: Propranolol seems to be a rapidly effective and safe treatment strategy for most IHs obstructing the airway. Because of the fast and important effects of propranolol, randomized controlled trials are hardly justifiable for this specific, relatively rare but, acute treatment indication. Despite the efficacy of propranolol, close monitoring of the patients with an airway IH is required, considering the risk of relapse of symptoms during or after treatment and the reported resistance to propranolol in at least 9% of the published cases. The dose and duration of treatment should be high Klinische Chemie Posters Urinary incontinence at young age: evaluation of diagnosis and treatment of children aged 3-6 years. Sytema N, Dellink-Vlietstra R, Kreileman J, Van der Deure J ICCS Londen, oktober 2012 Publicaties The use of EMDR in the treatment of therapy resistant enuresis: a pilot study. Van der Deure J ICCS Londen, oktober 2012 The effect of a continuous glucose monitoring sensor as a diagnostic tool on HBA1C levels in children with type 1 diabetes mellitus. Meendering AL, Dassel ACM, Spaans-Hummelink EAJM ESPR Porto, oktober 2012 Kindergeneeskunde Wetenschappelijk overzicht 2012 - 2013 90 91 Wetenschappelijk overzicht 2012 - 2013 Klinische Chemie Evaluation of Prevent ID and Quantum Blue rapid tests for fecal calprotectin. Hessels J, Douw G, Yildirim DD, Meerman G, van Herwaarden MA, van den Bergh FA. Clin Chem Lab Med. 2012 Jan 13;50(6):1079-82. Source Laboratory for Clinical Chemistry, Deventer Ziekenhuis, Deventer, The Netherlands. Abstract BACKGROUND: Tests for fecal calprotectin are usually either enzyme-linked immunosorbent assays (ELISA) or a time-resolved fluorimetric immunoassay (TRFIA). These time-consuming tests are performed only once every 1 or 2 weeks. Before the results of the tests are known most patients have already undergone colonoscopy. A rapid test, performed on outpatients, could minimize the number of necessary colonoscopies. To establish optimal cut-off values minimizing the necessity for colonoscopies, we compared two commercially available rapid tests with a quantitative TRFIA. METHODS: Fecal samples were collected from 85 patients with lower gastrointestinal complaints. Calprotectin was measured using quantitative TRFIA as well as using two rapid tests: Prevent ID CalDetect and Quantum Blue calprotectin. We used the TRFIA method as the golden standard with a cutoff value of 50 μg/g. The percentage correct classification, sensitivity, specificity and positive and negative predictive value were calculated for both rapid tests at various cut-off levels. RESULTS: Correlation between both of the rapid tests with TRFIA was significant. Quantum Blue calprotectin (κ 0.77) correlated better than Prevent ID CalDetect (κ 0.46). Optimal cut-off levels for Prevent ID CalDetect and Quantum Blue calprotectin rapid tests were 15 μg/g and 40 μg/g with a reduction in the number of necessary colonoscopies of 39% and 62%, respectively. CONCLUSIONS: The Quantum Blue calprotectin rapid test demonstrated better analytical performance than the Prevent ID CalDetect in reducing the number of colonoscopies. Furthermore, the former test has the advantage of using a point of care reader for quantitative measurement and for establishing an optimal cut-off level. Wetenschappelijk overzicht 2012 - 2013 Collaborations Yield of routine molecular analyses in colorectal cancer patients ≤70 years to detect underlying Lynch syndrome. van Lier MG, Leenen CH, Wagner A, Ramsoekh D, Dubbink HJ, van den Ouweland AM, Westenend PJ, de Graaf EJ, Wolters LM, Vrijland WW, Kuipers EJ, van Leerdam ME, Steyerberg EW, Dinjens WN; LIMO Study Group. J Pathol. 2012 Apr;226(5):764-74. Collaborators (23) van Rijssel RH, Eddes EH, ter Borg F. Author information Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands. Abstract : Zie Heelkunde Klinische Chemie Klinische Chemie Myeloid marker S100A8/A9 and lymphocyte marker, soluble interleukin 2 receptor: biomarkers of hidradenitis suppurativa disease activity? Wieland CW, Vogl T, Ordelman A, Vloedgraven HG, Verwoolde LH, Rensen JM, Roth J, Boer J, Hessels J Br J Dermatol. 2013 Jun;168(6):1252-8. Author information Laboratory for Clinical Chemistry, Deventer Hospital, PO box 5001, 7400 GC Deventer, The Netherlands. Abstract BACKGROUND: Hidradenitis suppurativa (HS) is a chronic inflammatory and debilitating disease of the skin. No biomarkers for this disease exist. OBJECTIVES: We set out to test whether angiotensin-converting enzyme (ACE), lysozyme, soluble interleukin 2 receptor (sIL-2R) and S100A8/A9 (calprotectin) are elevated in patients with HS. METHODS: Serum was collected from 29 patients with HS at different stages of the disease, and from 51 controls. ACE, lysozyme, sIL-2R and S100A8/A9 levels were measured. Clinical observation of disease activity was scored according to the Hurley grading system and by a physician global score (PGS) of disease severity. RESULTS: Serum levels of lysozyme and ACE were not increased above the normal reference values in controls or patients with HS. Levels of sIL-2R and S100A8/A9 were significantly higher in patients with HS than in controls (P<0·001 for both sIL-2R and S100A8/A9). Based on the receiver operating characteristic curves, the optimum sIL-2R and S100A8/A9 cut-off values were 375 U mL(-1) and 680 ng mL(-1), respectively, with a sensitivity of 0·79 and specificity of 0·78 for sIL-2R, and 0·86 and 0·88, respectively, for S100A8/A9. No correlations with Hurley classification scores were found. However, when using PGS of disease activity to categorize patients, levels of S100A8/A9, but not sIL-2R, tended to be higher in patients with more active disease. CONCLUSIONS: Levels of S100A8/A9 and sIL-2R, but not ACE or lysozyme, are elevated in the serum of patients with HS. However, there is no correlation between S100A8/A9 or sIL-2R levels and disease stage according to the Hurley classification system. Further research is needed to study the potential of S100A8/A9 to score disease activity in larger cohorts of patients and to predict disease flares. 92 93 Wetenschappelijk overzicht 2012 - 2013 Klinische Pathologie Wetenschappelijke Stages Immunohistochemical biomarkers and their relation with (diseasefree) survival in BRCA1-like and non-BRCA1-like subgroups in triplenegative breast cancer Auteur : M. Maats Begeleider : A.L.T. Imholz M.M. Smits Periode : 3 oktober 2011 – 17 februari 2012 Publicaties AIRP best cases in radiologic-pathologic correlation: Brunner gland hamartoma. Houwers JB, de Bie SH, Hofstee N. Radiographics. 2012 Jan-Feb;32(1):213-8. Source Department of Radiology and Pathology, Deventer Ziekenhuis, Nico Bolkesteinlaan 75, 7416 SE Deventer, the Netherlands. Prevalence and prognostic relevance of immunohistochemical biomarkers related with trastuzumab resistance in HER2 positive breast cancer Auteur : G.M. Teeuwen Begeleider: M.M. Smits Periode : 1 mei 2012 – 18 oktober 2012 Wetenschappelijk overzicht 2012 - 2013 HER2 positivity in gastric and esophageal adenocarcinoma : clinicopathological analysis and comparison Auteur : T. Koopman Begeleider : A.L.T. Imholz M.M. Smits Periode : 1 november 2012 – 24 maart 2013 Klinische Pathologie Klinische Pathologie Tissue composition of the vaginal wall in women with pelvic organ prolapse. Meijerink AM, van Rijssel RH, van der Linden PJ. Gynecol Obstet Invest. 2013;75(1):21-7. Source Department of Gynecology and Obstetrics, Deventer Hospital, Deventer, The Netherlands. Abstract BACKGROUND/AIMS: To determine the composition of the vaginal wall and to explore the connective tissue layer, muscularis and basement membrane in relation to the pathogenesis of pelvic organ prolapse (POP). METHODS: We performed a histopathological study with respect to the composition of the vaginal wall of 33 patients and 9 controls. Tissue samples from the vaginal wall were analysed for collagens II and IV, desmin, elastin, fibronectin, smooth muscle actin (SMA) and transforming growth factor (TGF)-β1 using (immuno)histochemistry. Morphometric analyses were also performed. RESULTS: Morphometric characteristics and expression of SMA, TGF-β1, elastin and collagen II were significantly altered in women with POP. CONCLUSION: Our results suggest that there could be an altered tissue composition of the vaginal wall in women with POP. SMA expression could play a role in the pathogenesis of POP. The alterations in elastin and TGF-β1 expression are likely a result of POP. 94 95 Wetenschappelijk overzicht 2012 - 2013 Klinische Psychologie sterdam, Meibergdreef 9, Amsterdam, The Netherlands. Abstract BACKGROUND: The Infant Behavioral Assessment and Intervention Program (IBAIP©) improved motor function at 24 months, and mental and behavioural development in high risk subgroups of very low birth weight (VLBW) infants. AIM: To determine IBAIP’s effects on executive functioning, behaviour and cognition at preschool age. STUDY DESIGN: Follow-up of a randomised controlled trial (RCT). SUBJECTS: At 44 months corrected age, all 176 VLBW infants were invited for follow-up. Forty-one term born children were assessed for comparison. OUTCOME MEASURES: Visual Attention Task (VAT), Gift delay, Peabody Picture Vocabulary Test III-NL (PPVT), Visual motor integration tests and Miller assessment for preschoolers. Parents completed Behavior Rating Inventory of Executive Function-Preschool (BRIEF-P) and Child Behavior Checklist (CBCL). RESULTS: At preschool age, 76 (88%) children of the intervention group and 75 (83%) children of the control group participated. There were no significant differences between the intervention and the control group. However, positive interaction effects between intervention and infants with bronchopulmonary dysplasia, infants born at gestational age<28 weeks, and infants of low educated mothers were found on CBCL, CBCL and BRIEF-P, and PPVT respectively. Most interaction effects exceeded 1 standard deviation in favour of the intervention children. The 151 VLBW children performed significantly worse than the term born children on the VAT, BRIEF-P and CBCL. CONCLUSION: IBAIP effects in VLBW children did not sustain until preschool age on executive functioning, behaviour and cognition. However, the most vulnerable children had a clinical relevant profit from IBAIP. VLBW children performed worse than the term born children. This study is a follow-up at preschool age of the multi-centre RCT of IBAIP versus usual care in VLBW infants. The RCT was performed in Amsterdam, The Netherlands (IBAIP). Artikelen Difference in mother-child interaction between preterm- and term-born preschoolers with and without disabilities. Potharst ES, Schuengel C, Last BF, van Wassenaer AG, Kok JH, Houtzager BA. Acta Paediatr. 2012 Jun;101(6):597-603. Author information Psychosocial Department of the Emma’s Children’s Hospital/Academic Medical Centre, Amsterdam, The Netherlands. Abstract AIM: To investigate differences in the quality of mother-child interaction between preterm- and term-born children at age 5, and to study the association of mother-child interaction with sociodemographic characteristics and child disability. METHODS: Preterm children (n = 94), born at <30 weeks’ gestation and/or birth weight <1000 g, and term children (n = 84) were assessed at corrected age of 5 using a mother-child interaction observation. Disabilities were assessed using an intelligence test, behaviour questionnaires for parents and teachers, and motor and neurological examinations. RESULTS: Mothers of preterm-born children were less supportive of and more interfering with their children’s autonomy than mothers of term-born children. This difference was only partly explained by sociodemographic factors. Dyads showed a lower quality of mother-child interaction if children had a severe disability, especially when mothers had a lower level of education. CONCLUSION: Five years after birth, mother-child interaction of very premature children and their mothers compared unfavourably with term children and their mothers. Mothers with sociodemographic disadvantages, raising a preterm child with severe disabilities, struggle most with giving adequate sensitive support for the autonomy development of their child. Focused specialized support for these at risk groups is warranted. The infant behavioral assessment and intervention program in very low birth weight infants; outcome on executive functioning, behaviour and cognition at preschool age. Verkerk G, Jeukens-Visser M, Houtzager B, Koldewijn K, van Wassenaer A, Nollet F, Kok J. Early Hum Dev. 2012 Aug;88(8):699-705. Author information Department of Rehabilitation, Academic Medical Centre, University of AmWetenschappelijk overzicht 2012 - 2013 96 97 Wetenschappelijk overzicht 2012 - 2013 Klinische Psychologie Klinische Psychologie Development and validation of the distress thermometer for parents of a chronically ill child. Haverman L, van Oers HA, Limperg PF, Houtzager BA, Huisman J, Darlington AS, Maurice-Stam H, Grootenhuis MA. J Pediatr. 2013 Oct;163(4):1140-6 Author information Psychosocial Department, Academic Medical Center/Emma Children’s Hospital, Amsterdam, The Netherlands. Abstract OBJECTIVE: To develop and validate a Distress Thermometer for Parents (DTP) for chronically ill children and to determine a cutoff score for clinical distress. STUDY DESIGN: Parents of a chronically ill child (0-18 years) were recruited via announcements or were actively approached at the outpatient clinics of the Emma Children’s Hospital/Academic Medical Center and Vrije Universiteit Medical Center. We modeled the development of the DT-P on the Distress Thermometer used in oncology medical care. The DT-P consists of a thermometer score from 0 (no distress) to 10 (extreme distress) and a problem list (practical, social, emotional, physical, cognitive, and parenting domains). The DT-P was validated with the Hospital Anxiety and Depression Scale (HADS) and the Parenting Stress Index. RESULTS: The mean thermometer score of the 706 participating parents was 3.7 (SD 3.0). The thermometer score and the scores in the practical, emotional, physical, and cognitive problem domains were strongly related to anxiety, depression, and the total score of the HADS (0.55 ≤ r ≤ 0.72). The thermometer score and all problem domain scores were moderately-tostrongly related to the Parenting Stress Index (0.38 ≤ r ≤ 0.63). A cutoff-score of 4 correctly identified 86% of “clinical HADS cases” (sensitivity) and 67% of “nonclinical HADS cases” (specificity). CONCLUSIONS: We developed the DT-P and examined its diagnostic utility in a large sample. The DT-P appeared to be a valid and useful short screening-tool for identifying parental distress. for which results were inconclusive. Effect sizes for group effects were small to medium (r(2) varying between 0.02 and 0.07). Principal component isolated four factors: visual-motor coordination, face/emotion recognition, reaction time/attention, and accuracy/attention. When sociodemographic and child characteristics at birth were accounted for, bronchopulmonary dysplasia was significantly negatively associated with all four components and also with working memory. INTERPRETATION: Very preterm children are at risk for problems on a broad array of neurocognitive functions. Bronchopulmonary dysplasia is an independent risk factor for impaired neurocognitive functioning. Collaborations Perinatal risk factors for neurocognitive impairments in preschool children born very preterm. Potharst ES, van Wassenaer-Leemhuis AG, Houtzager BA, Livesey D, Kok JH, Last BF, Oosterlaan J. Dev Med Child Neurol. 2013 Feb;55(2):178-84. Author information Psychosocial Department, Emma’s Children’s Hospital Academic Medical Centre, Amsterdam, The Netherlands. Abstract AIM: This study aimed to compare a broad array of neurocognitive functions (processing speed, aspects of attention, executive functioning, visual-motor coordination, and both face and emotion recognition) in very preterm and termborn children and to identify perinatal risk factors for neurocognitive dysfunctions. METHOD: Children who were born very preterm (n=102; 46 males, 56 females), defined as a gestational age of less than 30 weeks and/or birthweight under 1000 g, and a comparison group of term-born children (n=95; 40 males, 55 females) were assessed at age 5 with the Wechsler Preschool and Primary Scale of Intelligence, Stop Signal Task, several tasks of the Amsterdam Neuropsychological Tasks, and a Digit Span task. RESULTS: When sociodemographic characteristics were taken into account, very preterm children scored worse than term-born children on all neurocognitive functions, except on tasks measuring inhibition and sustained attention, Wetenschappelijk overzicht 2012 - 2013 98 99 Wetenschappelijk overzicht 2012 - 2013 Klinische Psychologie Klinische Psychologie Parental psychological distress and anxiety after a successful IVF/ ICSI procedure with and without preimplantation genetic screening: follow-up of a randomised controlled trial. Beukers F, Houtzager BA, Paap MC, Middelburg KJ, Hadders-Algra M, Bos AF, Kok JH; PGS study group. Early Hum Dev. 2012 Sep;88(9):725-30. Collaborators (20) Houtzager BA Author information Department of Neonatology, Academic Medical Center Amsterdam, 1105 AZ Amsterdam, The Netherlands. Abstract BACKGROUND: Infertility treatment has an acknowledged psychological impact on women and their partners; however, information about the development of parental well-being after child birth is inconclusive. Preimplantation genetic screening (PGS) has been suggested to increase the efficacy of infertility treatments, but the effect it may have on parental well-being is unknown. AIM: To evaluate parental distress and anxiety at one and two years after successful infertility treatment and to explore variables that might affect parental outcome, including PGS and child behaviour. STUDY DESIGN: Follow-up of a randomised controlled trial (RCT) on the efficacy of PGS. SUBJECTS: Parents (n=101) that successfully underwent IVF/ICSI with or without PGS. OUTCOME MEASURES: At one and two years, parental distress and anxiety were assessed with the General Health Questionnaire 30 and State Trait Anxiety Inventory, respectively. At two years, child development and behaviour were assessed with the Dutch Bayley Scales of Infant Development-II and the Child Behaviour Checklist 1½-5, respectively. RESULTS: PGS had no effect on parental distress or anxiety. Child behaviour problems were associated with parental distress and anxiety. There was a main effect of time on parental distress, with distress levels decreasing over time. CONCLUSIONS: We found no objection to PGS related to parental psychological distress and anxiety. When parental psychological problems are present after infertility treatment, the results of this study could be useful to support counselling. 5.1%; odds ratio adjusted for center, 0.97; 95% CI, 0.61-1.55; P = .89). CONCLUSION: Neonatal caffeine therapy was no longer associated with a significantly improved rate of survival without disability in children with very low birth weights who were assessed at 5 years. Survival without disability to age 5 years after neonatal caffeine therapy for apnea of prematurity. Schmidt B, Anderson PJ, Doyle LW, Dewey D, Grunau RE, Asztalos EV, Davis PG, Tin W, Moddemann D, Solimano A, Ohlsson A, Barrington KJ, Roberts RS; Caffeine for Apnea of Prematurity (CAP) Trial Investigators. JAMA. 2012 Jan 18;307(3):275-82. Collaborators (165) Houtzager B Author information Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Canada. Abstract CONTEXT: Very preterm infants are prone to apnea and have an increased risk of death or disability. Caffeine therapy for apnea of prematurity reduces the rates of cerebral palsy and cognitive delay at 18 months of age. OBJECTIVE: To determine whether neonatal caffeine therapy has lasting benefits or newly apparent risks at early school age. DESIGN, SETTING, AND PARTICIPANTS: Five-year follow-up from 2005 to 2011 in 31 of 35 academic hospitals in Canada, Australia, Europe, and Israel, where 1932 of 2006 participants (96.3%) had been enrolled in the randomized, placebo-controlled Caffeine for Apnea of Prematurity trial between 1999 and 2004. A total of 1640 children (84.9%) with birth weights of 500 to 1250 g had adequate data for the main outcome at 5 years. MAIN OUTCOME MEASURES: Combined outcome of death or survival to 5 years with 1 or more of motor impairment (defined as a Gross Motor Function Classification System level of 3 to 5), cognitive impairment (defined as a Full Scale IQ<70), behavior problems, poor general health, deafness, and blindness. RESULTS: The combined outcome of death or disability was not significantly different for the 833 children assigned to caffeine from that for the 807 children assigned to placebo (21.1% vs 24.8%; odds ratio adjusted for center, 0.82; 95% CI, 0.65-1.03; P = .09). The rates of death, motor impairment, behavior problems, poor general health, deafness, and blindness did not differ significantly between the 2 groups. The incidence of cognitive impairment was lower at 5 years than at 18 months and similar in the 2 groups (4.9% vs Wetenschappelijk overzicht 2012 - 2013 100 101 Wetenschappelijk overzicht 2012 - 2013 Klinische Psychologie Klinische Psychologie Morphologic abnormalities in 2-year-old children born after in vitro fertilization/intracytoplasmic sperm injection with preimplantation genetic screening: follow-up of a randomized controlled trial. Beukers F, van der Heide M, Middelburg KJ, Cobben JM, Mastenbroek S, Breur R, van der Lee JH, Hadders-Algra M, Bos AF, Kok JH; PGS Study Group. Fertil Steril. 2013 Feb;99(2):408-13. Collaborators (17) Houtzager BA Author information Department of Neonatology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands. Abstract OBJECTIVE: To evaluate the effect of preimplantation genetic screening (PGS) on morphologic outcome in children. DESIGN: Follow-up of a randomized controlled trial (RCT). SETTING: University hospital. PATIENT(S): Two-year-old children born to mothers who participated in an RCT on the efficacy of PGS: 50 children born after in vitro fertilization (IVF)/ intracytoplasmic sperm injection (ICSI) with PGS (intervention group; PGS+) and 72 children born after IVF/ICSI only (control group; PGS-). Sixty-six agematched children conceived without any form of assisted reproduction were recruited separately in a local public health service center (reference group). INTERVENTION(S): PGS. MAIN OUTCOME MEASURE(S): Body surface examination and anthropometry. The evaluation of morphologic abnormalities allowed assessment of children’s phenotype in detail. Morphologic abnormalities were classified as major abnormalities (abnormal development in organogenesis, deformations, disruptions, or dysplasia) and minor anomalies (deviations in phenogenesis). RESULT(S): The percentage of children with ≥ 1 major abnormality was 28% in the PGS+ and 35% in the PGS- group [difference -7%, 95% CI -23% to 10%]. The percentage of children with ≥ 1 minor anomaly was 64% in the PGS+ and 67% in the PGS- group [difference -3%, 95% CI -15% to 20%]. In the reference group 30% of the children had ≥ 1 major abnormality [95% CI 20% to 43%] and 74% had ≥ 1 minor anomaly [95% CI 62% to 84%]. CONCLUSION(S): No statistically significant differences were found in minor anomalies between children conceived after IVF/ICSI with or without PGS. There is < 2.5% chance of ≥ 10% more major abnormalities in children born after PGS. Longziekten Abstract BACKGROUND: Metal fume fever is an occupational disease caused by inhalation of volatile metal oxides. Clinically there is a strong resemblance to influenza. It is thought that metal fume fever occurs much more frequently than it is reported. The symptoms are self-limiting without treatment, disappearing within 24-48 hours without residual symptoms. CASE DESCRIPTION: A male 35-year-old construction worker had cut galvanized steel plates in a closed environment. He had a flu-like illness with fever, leucocytosis and hypoxemia. The symptoms resolved completely without treatment within 18 hours. CONCLUSION: Metal fume fever is a frequently occurring disease but is often overlooked. It is important to ask about exposure to metal fumes in certain occupational groups in order to make the correct diagnosis. In this way measures can be taken to avoid exposure to metal oxides and to prevent recurrence of the disease. Artikelen Circulating tumor cells in small-cell lung cancer: a predictive and prognostic factor. Hiltermann TJ, Pore MM, van den Berg A, Timens W, Boezen HM, Liesker JJ, Schouwink JH, Wijnands WJ, Kerner GS, Kruyt FA, Tissing H, Tibbe AG, Terstappen LW, Groen HJ. Ann Oncol. 2012 Nov;23(11):2937-42. Author information Department of Pulmonary Diseases, m University Medical Center Groningen, Groningen, The Netherlands. Abstract BACKGROUND: Initial response of small-cell lung cancer (SCLC) to chemotherapy is high, and recurrences occur frequently, leading to early death. This study investigated the prognostic value of circulating tumor cells (CTCs) in patients with SCLC and whether changes in CTCs can predict response to chemotherapy. Patients and methods In this multicenter prospective study, blood samples for CTC analysis were obtained from 59 patients with SCLC before, after one cycle, and at the end of chemotherapy. CTCs were measured using CellSearch systems. RESULTS: At baseline, lower numbers of CTCs were observed for 21 patients with limited SCLC (median = 6, range 0-220) compared with 38 patients with extensive stage (median = 63, range 0-14,040). Lack of measurable CTCs (27% of patients) was associated with prolonged survival (HR 3.4; P ≤ 0.001). CTCs decreased after one cycle of chemotherapy; this decrease was not associated with tumor response after four cycles of chemotherapy. CTC count after the first cycle of chemotherapy was the strongest predictor for overall survival (HR 5.7; 95% CI 1.7-18.9; P = 0.004). CONCLUSION: Absolute CTCs after one cycle of chemotherapy in patients with SCLC is the strongest predictor for response on chemotherapy and survival. Patients with low initial CTC numbers lived longer than those with higher CTCs. [Metal fume fever, often unrecognized]. [Article in Dutch] Kooistra J, de Hosson SM. Ned Tijdschr Geneeskd. 2012;156(32):A4171. Source Deventer Ziekenhuis, afd. Longziekten, Deventer, the Netherlands. Wetenschappelijk overzicht 2012 - 2013 102 103 Wetenschappelijk overzicht 2012 - 2013 Longziekten Longziekten Geriatric rehabilitation for patients with advanced COPD: programme characteristics and case studies. van Dam van Isselt EF, Groenewegen-Sipkema KH, Spruit-van Eijk M, Chavannes NH, Achterberg WP. Int J Palliat Nurs. 2013 Mar;19(3):141-6. Author information Institute of Psychiatry, King’s College, London, UK. Abstract Considering the worldwide ageing of populations, there is a growing need for rehabilitation programmes specifically designed for geriatric patients. The authors developed and implemented a post-acute geriatric rehabilitation programme in a skilled nursing facility for patients with advanced chronic obstructive pulmonary disease (COPD)-the GR-COPD programme. This paper describes the characteristics of the programme and presents three case studies to illustrate its possible benefits for individual patients. The case studies show that integration of rehabilitation and palliative care components is essential, as patients with advanced COPD admitted to hospital for an acute exacerbation often suffer from high symptom burden, deteriorating quality of life, and poor prognosis. Development and implementation of a post-acute GR-COPD programme is feasible and can offer substantial benefits for patients with advanced COPD admitted to hospital for an acute exacerbation. Maag, Darm en Leverziekten Abstract BACKGROUND: Colonoscopy is used for the detection of neoplastic polyps, although a significant miss rate has been reported. Limited data suggest that the administration of the antispasmodic hyoscine N-butylbromide during colonoscopy improves polyp detection. OBJECTIVE: To investigate whether the use of 20 mg hyoscine N-butylbromide intravenously during colonoscopy improves polyp detection or removal. DESIGN: A prospective, double-blind, placebo-controlled, randomized, clinical trial. SETTING: Nonacademic teaching hospital. PATIENTS: This study involved 674 patients who were routinely referred and accepted for either diagnostic or screening colonoscopy. INTERVENTION: Intravenous injection of either 1 mL hyoscine N-butylbromide (n = 340) or 0.9% NaCl solution (n = 334) when withdrawal was started. MAIN OUTCOME MEASUREMENTS: Polyp detection rate (PDR), adenoma detection rate (ADR), and the advanced lesion detection rate (ALDR), 5% trimmed mean number of polyps, mean withdrawal time. RESULTS: The cecal intubation rate was 96%. The PDR, ADR, and ALDR were 56% versus 60%, 30% versus 31%, and 14% versus 14% in the hyoscine N-butylbromide and placebo groups, respectively (all P values > .25). The means of the total number of detected, removed, and harvested polyps per patient were 1.13 versus 1.21, 1.03 versus 1.06, and 0.89 versus 0.89 in the hyoscine N-butylbromide and placebo groups, respectively (all P values > .37). Mean withdrawal time was 561 versus 584 seconds in the hyoscine N-butylbromide and placebo groups, respectively (P = .34). Multivariate analysis demonstrated no effect of hyoscine N-butylbromide on the investigated parameters. LIMITATIONS: Only experienced colonoscopists participated in the study. CONCLUSION: We found no evidence to support the use of hyoscine N-butylbromide during withdrawal of the colonoscope to improve polyp detection or removal. (Clinical trial registration number: ISRCTN25405865.). Publicaties [Acute obstructive colon carcinoma and liver metastases: how to treat?]. [Article in Dutch] Buis CI, Bosker RJ, ter Borg F, de Noo ME, Liem MS. Ned Tijdschr Geneeskd. 2012;156(43):A4817. Source Deventer Ziekenhuis, Afd. Chirurgie, Deventer, the Netherlands. Abstract Zie Heelkunde Severe hepatitis with coagulopathy due to HSV-1 in an immunocompetent man. Wind L, van Herwaarden M, Sebens F, Gerding M. Neth J Med. 2012 Jun;70(5):227-9. Source Department of Internal Medicine, Deventer Hospital, the Netherlands. Abstract Zie Interne Geneeskunde Nurse endoscopists perform colonoscopies according to the international standard and with high patient satisfaction. van Putten PG, Ter Borg F, Adang RP, Koornstra JJ, Romberg-Camps MJ, Timmer R, Poen AC, Kuipers EJ, Van Leerdam ME. Endoscopy. 2012 Dec;44(12):1127-32. Author information Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands. Abstract BACKGROUND AND STUDY AIMS: Colonoscopy is increasingly performed by nurse endoscopists. We aimed to assess the endoscopic quality and pa- Hyoscine N-butylbromide does not improve polyp detection during colonoscopy: a double-blind, randomized, placebo-controlled, clinical trial. de Brouwer EJ, Arbouw ME, van der Zwet WC, van Herwaarden MA, Ledeboer M, Jansman FG, ter Borg F. Gastrointest Endosc. 2012 Apr;75(4):835-40. Source Department of Gastroenterology, Deventer Hospital, Deventer, The Netherlands. Wetenschappelijk overzicht 2012 - 2013 104 105 Wetenschappelijk overzicht 2012 - 2013 Maag, Darm en Leverziekten Maag, Darm en Leverziekten Evaluation of Prevent ID and Quantum Blue rapid tests for fecal calprotectin. Hessels J, Douw G, Yildirim DD, Meerman G, van Herwaarden MA, van den Bergh FA. Clin Chem Lab Med. 2012 Jan 13;50(6):1079-82. Source Laboratory for Clinical Chemistry, Deventer Ziekenhuis, Deventer, The Netherlands. Abstract Zie Klinische Chemie tient experience of these procedures. PATIENTS AND METHODS: This prospective multicenter study analyzed 100 consecutive colonoscopies each for 10 trained nurse endoscopists with respect to endoscopic quality and patient experience. Colonoscopies were performed under the supervision of a gastroenterologist, using the techniques and protocols of the participating hospitals. Patient experience was assessed using a questionnaire. RESULTS: Most nurse endoscopists were female (90 %; median age 43 [range 35 - 49]). Before the start of the study, they had performed a median of 528 colonoscopies (range 208 - 2103). For the 1000 patients, mean age was 56 ± 15 years; 55 % were women; and 96 % were in class I or II according to the American Society of Anesthesiologists’ physical status classification system. Colonoscopies were performed for screening or surveillance in 42 %; for symptomatic indications in 58 % of patients. The unassisted cecal intubation rate was 94 %; the mean withdrawal time was 10 ± 5 minutes. The adenoma detection rate was 26.7 %. In 229 of the colonoscopies (23 %), the nurse endoscopists required assistance from the supervising gastroenterologist. The complication rate was 0.2 %: one perforation and one cardiopulmonary complication. The questionnaire was completed by 734 /1000 patients (73 %) and of these 694 /734 (95 %) were satisfied with the endoscopic procedure. Among the respondents 530 /734 (72 %) had no specific preference for a physician or nurse endoscopist, whereas 113 /734 (15 %) preferred a physician endoscopist, and 91 /734 (12 %) preferred a nurse endoscopist. CONCLUSION: The nurse endoscopists performed colonoscopies according to the internationally recognized quality standards and with high patient satisfaction. ≥95%) and ten healthy controls (HC) were included. Two weeks prior to duodenal biopsy collection, ten patients discontinued proton pump inhibitor (PPI) treatment and ten took maximum dose PPI. RNA was profiled on an Affymetrix Human Genome U133 Plus 2.0 array (Affymetrix, Santa Clara, CA, USA). Genes exhibiting a fold change ≥ 1.4 (t test p value <1E-4) were considered differentially expressed. A subset of 21 differentially expressed genes was selected for confirmatory TaqMan low-density array RT-PCR. Mucosal apolipoprotein A-IV (apoA-IV) and cholecystokinin (CCK) concentrations were determined by ELISA and RIA, respectively. RESULTS: In GERD patients off PPI, 23 up- and 23 down-regulated genes relative to HC were found. In GERD patients on PPI, 33 and five genes were higher, respectively, lower expressed. The majority of up-regulated genes were associated with lipid absorption, particularly triglyceride resynthesis and intracellular vesicular transport, rate-limiting processes for chylomicron production and secretion. Differential expression of 11 genes was confirmed by RT-PCR. Mucosal apoA-IV and CCK concentrations (signaling proteins released upon chylomicron secretion) were similar in GERD patients and HC. CONCLUSIONS: The identified mRNA expression differences suggest that in GERD patients’ duodenum, the chylomicron production and secretion potential is elevated, and may underlie a mechanism by which postprandial duodenal signaling contributes to GERD symptom generation. In gastroesophageal reflux disease, differential gene expression in the duodenum points towards enhanced chylomicron production and secretion. de Vries DR, ter Linde JJ, van Boxel OS, van Herwaarden MA, Shephard P, Geng MM, Schwartz MP, Samsom M. Dig Dis Sci. 2012 Jun;57(6):1475-85. Author information Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, The Netherlands. Abstract BACKGROUND: Duodenal signaling affects esophageal motility and perception, both pathophysiological factors in gastroesophageal reflux disease (GERD). Duodenal gene expression abnormalities, contributing to altered esophageal sensorimotor function, have not been reported to date. AIM: To identify differentially expressed genes in GERD patients’ duodenum. METHODS: Twenty GERD patients (total 24-h acid exposure 6-12%, SAP Wetenschappelijk overzicht 2012 - 2013 106 107 Wetenschappelijk overzicht 2012 - 2013 Maag, Darm en Leverziekten Maag, Darm en Leverziekten The Global Rating Scale in clinical practice: a comprehensive quality assurance programme for endoscopy departments. Sint Nicolaas J, de Jonge V, de Man RA, ter Borg F, Cahen DL, Moolenaar W, Stolk MF, van Tilburg AJ, Valori RM, van Leerdam ME, Kuipers EJ; SCoPE consortium. Dig Liver Dis. 2012 Nov;44(11):919-24. Author information The Departments of Gastroenterology and Hepatology of Erasmus MC University Medical Center, Rotterdam, The Netherlands Abstract BACKGROUND: The Global Rating Scale is an endoscopy quality assurance programme, successfully implemented in England. It remains uncertain whether it is applicable in another health care setting. AIM: To assess the applicability of the Global Rating Scale as benchmark tool in an international context. METHODS: Eleven Dutch endoscopy departments were included for a Global Rating Scale-census, performed as a cross-sectional evaluation, July 2010. Two Global Rating Scale-dimensions - ‘clinical quality’ and ‘patient experience’ - were assessed across six items using a range of levels: from level-D (basic) to level-A (excellent). Construct validity was assessed by of patients reported being sufficiently informed about what to do in case of problems after discharge (79 %, range 43 - 98 %; P < 0.001), and 85 % of individuals stated that they would be willing to repeat the colonoscopy procedure (range 72 - 92 %; P < 0.001). Factors associated with a decreased willingness to return were the burdensome bowel preparation (odds ratio [OR] = 0.25; P < 0.001), “rushing staff” attitude (OR = 0.57; P < 0.05), low acceptance of the procedure (OR = 0.42; P < 0.01), and more discomfort than expected (OR = 0.54; P < 0.05). CONCLUSION: Overall patient experiences with colonoscopy were satisfactory, but they also showed considerable variation. This study shows that use of a GRS patient questionnaire is feasible in the Dutch endoscopy setting for the assessment of patient experience. The significant variability between endoscopy units can be used to benchmark services and enable shortcomings to be identified. Benchmarking patient experiences in colonoscopy using the Global Rating Scale. Sint Nicolaas J, de Jonge V, Korfage IJ, Ter Borg F, Brouwer JT, Cahen DL, Lesterhuis W, Ouwendijk RJ, Kuipers EJ, van Leerdam ME. Endoscopy. 2012 May;44(5):462-72. Author information Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands. Abstract INTRODUCTION: The Global Rating Scale (GRS) is a quality assurance program that was developed in England to assess patient-centered care in endoscopy. The aim of the current study was to evaluate patient experiences of colonoscopy using the GRS in order to compare different departments and to provide benchmarks. The study also evaluated factors associated with patient satisfaction. METHODS: A GRS questionnaire was used both before and after the procedure in outpatients undergoing colonoscopy. The questionnaire assessed the processes associated with the colonoscopy, from making the appointment up until discharge. Mean values and ranges of 12 endoscopy departments were calculated together with P values in order to assess heterogeneity. RESULTS: In total, 1904 pre-procedure and 1532 (80 %) post-procedure questionnaires were returned from 12 endoscopy departments. The mean time patients had to wait for their procedure was 4.3 weeks (range 3.1 5.8 weeks), and 54 % (range 35 - 64 %; P < 0.001) reported being given a choice of appointment dates/times. Discomfort during colonoscopy was reported by 20 % (range 8 - 40 %; P < 0.001). Recovery room privacy was satisfactory for 76 % of patients (range 66 - 90 %; P < 0.05). The majority Follow-up of premalignant lesions in patients at risk for progression to gastric cancer. den Hoed CM, Holster IL, Capelle LG, de Vries AC, den Hartog B, Ter Borg F, Biermann K, Kuipers EJ. Endoscopy. 2013;45(4):249-56. Author information Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands. Abstract BACKGROUND AND STUDY AIMS: A recent international guideline recommends surveillance of premalignant gastric lesions for patients at risk of progression to gastric cancer. The aim of this study was to identify the role of the distribution and severity of premalignant lesions in risk categorization. PATIENTS AND METHODS: Patients with a previous diagnosis of atrophic gastritis, intestinal metaplasia, or low grade dysplasia were invited for surveillance endoscopy with non-targeted biopsy sampling. Biopsy specimens were evaluated by pathologists (four general and one expert) using the Sydney and the operative link for gastric intestinal metaplasia (OLGIM) systems, and scores were compared using kappa statistics. RESULTS: 140 patients were included. In 37 % (95 % confidence interval [CI] 29 % - 45 %) the severity of premalignant lesions was less than at baseline, while 6 % (95 %CI 2 % - 10 %) showed progression to more severe lesions. Intestinal metaplasia in the corpus was most likely to progress to more than one location (57 %; 95 %CI 36 % - 76 %). The proportion of patients with multilocated premalignant lesions increased from 24 % at baseline to 31 % at surveillance (P = 0.014). Intestinal metaplasia was the premalignant lesion most frequently identified in subsequent endoscopies. Intestinal Wetenschappelijk overzicht 2012 - 2013 108 109 Wetenschappelijk overzicht 2012 - 2013 Maag, Darm en Leverziekten Maag, Darm en Leverziekten comparing department-specific colonoscopy audit data to GRS-levels. RESULTS: For ‘clinical quality’, variable scores were achieved in items ‘safety’ (9%=B, 27%=C, 64%=D) and ‘communication’ (46%=A, 18%=C, 36%=D). All departments achieved a basic score in ‘quality’ (100%=D). For ‘patient experience’, variable scores were achieved in ‘timeliness’ (18%=A, 9%=B, 73%=D) and ‘booking-choice’ (36%=B, 46%=C, 18%=D). All departments achieved basic scores in ‘equality’ (100%=D). Departments obtaining level-C or above in ‘information’, ‘comfort’, ‘communication’, ‘timeliness’ and ‘aftercare’, achieved significantly better audit outcomes compared to those obtaining level-D (p<0.05). CONCLUSION: The Global Rating Scale is appropriate to use outside England. There was significant variance across departments in dimensions. Most Global Rating Scale-levels were in line with departments’ audit outcomes, indicating construct validity. metaplasia regressed in 27 % compared with 44 % for atrophic gastritis and 100 % for low grade dysplasia. Interobserver agreement was excellent for intestinal metaplasia (k = 0.81), moderate for dysplasia (k = 0.42), and poor for atrophic gastritis (k < 0). CONCLUSIONS: Premalignant gastric lesions found in the corpus have the highest risk of progression, especially intestinal metaplasia, which has excellent interobserver agreement. This supports the importance of intestinal metaplasia as marker for follow-up in patients with premalignant gastric lesions. plasia was not associated with AA or NAA. CONCLUSIONS: Large size and number, villous histology, proximal location of adenomas, insufficient bowel preparation, and poor colonoscopy reach were associated with detection of AA during surveillance based on data from community-based practice. These characteristics should be used jointly to develop surveillance policies for adenoma patients. Reply to Dr. Tursi. van Putten PG, ter Borg F, Adang RP, Koornstra JJ, Romberg-Camps MJ, Timmer R, Poen AC, Kuipers EJ, van Leerdam ME. Endoscopy. 2013;45(5):409. Comment on Colonoscopy by nurse endoscopists: the right answer for the growing demand for colonoscopy in clinical practice? [Endoscopy. 2013] Nurse endoscopists perform colonoscopies according to the international standard and with high patient satisfaction. [Endoscopy. 2012] Wetenschappelijk overzicht 2012 - 2013 Reply to Thoufeeq. van Putten PG, ter Borg F, Adang RP, Koornstra JJ, Romberg-Camps MJ, Timmer R, Poen AC, van Leerdam ME, Kuipers EJ. Endoscopy. 2013;45(5):407. Comment on Nurse endoscopists perform colonoscopies according to the international standard and with high patient satisfaction. [Endoscopy. 2012] Nurse endoscopists: the unsung Florence Nightingales. [Endoscopy. 2013] Collaborations Yield of routine molecular analyses in colorectal cancer patients ≤70 years to detect underlying Lynch syndrome. van Lier MG, Leenen CH, Wagner A, Ramsoekh D, Dubbink HJ, van den Ouweland AM, Westenend PJ, de Graaf EJ, Wolters LM, Vrijland WW, Kuipers EJ, van Leerdam ME, Steyerberg EW, Dinjens WN; LIMO Study Group. J Pathol. 2012 Apr;226(5):764-74. Collaborators (23) ter Borg F. Author information Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands. Abstract Zie Heelkunde 110 111 Wetenschappelijk overzicht 2012 - 2013 Maag, Darm en Leverziekten Maag, Darm en Leverziekten Features of adenoma and colonoscopy associated with recurrent colorectal neoplasia based on a large community-based study. van Heijningen EM, Lansdorp-Vogelaar I, Kuipers EJ, Dekker E, Lesterhuis W, Ter Borg F, Vecht J, De Jonge V, Spoelstra P, Engels L, Bolwerk CJ, Timmer R, Kleibeuker JH, Koornstra JJ, van Ballegooijen M, Steyerberg EW. Gastroenterology. 2013 Jun;144(7):1410-8. Author information Department of Public Health, Erasmus MC, University Medical Center, Rotterdam, The Netherlands. Abstract BACKGROUND & AIMS: We investigated adenoma and colonoscopy characteristics that are associated with recurrent colorectal neoplasia based on data from community-based surveillance practice. METHODS: We analyzed data of 2990 consecutive patients (55% male; mean age 61 years) newly diagnosed with adenomas from 1988 to 2002 at 10 hospitals throughout The Netherlands. Medical records were reviewed until December 1, 2008. We excluded patients with hereditary colorectal cancer (CRC) syndromes, a history of CRC, inflammatory bowel disease, or without surveillance data. We analyzed associations among adenoma number, size, grade of dysplasia, villous histology, and location with recurrence of advanced adenoma (AA) and nonadvanced adenoma (NAA). We performed a multivariable multinomial logistic regression analysis to estimate odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS: During the surveillance period, 203 (7%) patients were diagnosed with AA and 954 (32%) patients with NAA. The remaining 1833 (61%) patients had no adenomas during a median follow-up of 48 months. Factors associated with AA during the surveillance period included baseline number of adenomas (ORs ranging from 1.6 for 2 adenomas; 95% CI: 1.1-2.4 to 3.3 for ≥5 adenomas; 95% CI: 1.7-6.6), adenoma size ≥10 mm (OR = 1.7; 95% CI: 1.2-2.3), villous histology (OR = 2.0; 95% CI: 1.2-3.2), proximal location (OR = 1.6; 95% CI: 1.2-2.3), insufficient bowel preparation (OR = 3.4; 95% CI: 1.6-7.4), and only distal colonoscopy reach (OR = 3.2; 95% CI: 1.2-8.5). Adenoma number had the greatest association with NAA. High-grade dys- Microbiologie Voordrachten Hyoscine N-butylbromide does not improve polyp detection during colonoscopy: a double-blind, randomized, placebo-controlled, clinical trial. De Brouwer EJ, Arbouw ME, Van der Zwet WC, Van Herwaarden MA, Ledeboer M, Jansman FGA, Ter Borg F Digestive Disease Week San Diego California, May 19 – 22 2012. San Diego, 19 oktober 2013 Publicaties The first case record of a female patient with buboniclymphogranuloma venereum (LGV), serovariant L2b Stephan P Verweij, Sander Ouburg, Harry de Vries, Servaas A Morre´, Cees J W van Ginkel, Hanna Bos, Fré W Sebens Sex Transm Infect. 2012;88(5):346-7. Abstract Zie Dermatologie A randomised trial of honey barrier cream versus zinc oxide ointment. Nijhuis WA, Houwing RH, Van der Zwet WC, Jansman FG. Br J Nurs. 2012 Nov 8-21;21(20):9-10, 12-3. Author information Ziekenhis Gelderse Vallei Ede, University Groningen, Department of Pharmacotherapy and Pharmaceutical Care, Groningen, The Netherlands. Abstract Zie Dermatologie Hyoscine N-butylbromide does not improve polyp detection during colonoscopy: a double-blind, randomized, placebo-controlled, clinical trial. de Brouwer EJ, Arbouw ME, van der Zwet WC, van Herwaarden MA, Ledeboer M, Jansman FG, ter Borg F. Gastrointest Endosc. 2012 Apr;75(4):835-40. Source Department of Gastroenterology, Deventer Hospital, Deventer, The Netherlands. Abstract Zie Maag Darm Leverziekten Wetenschappelijk overzicht 2012 - 2013 112 113 Wetenschappelijk overzicht 2012 - 2013 Microbiologie Maag, Darm en Leverziekten Severe hepatitis with coagulopathy due to HSV-1 in an immunocompetent man. Wind L, van Herwaarden M, Sebens F, Gerding M. Neth J Med. 2012 Jun;70(5):227-9. Source Department of Internal Medicine, Deventer Hospital, the Netherlands. Abstract Zie Interne Geneeskunde Clinical breakpoint changes and their impact on surveillance of antimicrobial resistance in Escherichia coli causing bacteraemia. van der Bij AK, van Dijk K, Muilwijk J, Thijsen SF, Notermans DW, de Greeff S, van de Sande-Bruinsma N; ISIS-AR study group. Clin Microbiol Infect. 2012 Nov;18(11):E466-72. Collaborators (47) Sebens FW Abstract Dutch laboratories are currently changing their breakpoint criteria from mostly Clinical Laboratory and Standards Institute (CLSI) breakpoints to European Committee on Antimicrobial Susceptibility Testing (EUCAST) breakpoints. To evaluate the impact of these changes, we studied antimicrobial resistance trends of Escherichia coli in blood specimens from January 2008 to January 2012 using CLSI and EUCAST breakpoints and compared them with the antimicrobial susceptibility test (AST) interpretations reported by Dutch laboratories participating in the Infectious Disease Surveillance Information System for Antibiotic Resistance (ISIS-AR). ISIS-AR collects AST interpretations, including underlying minimal inhibitory concentrations (MICs) of routinely cultured bacterial species on a monthly basis from Dutch laboratories. MICs of Etests or automated systems were reinterpreted according to the CLSI 2009 and EUCAST 2010 guidelines. Trends in non-susceptibility (i.e. intermediate resistant and resistant) over time were analysed by the Cochran-Armitage test for trend. The effects of the change from CLSI to EUCAST breakpoints on non-susceptibility were small. There were no differences in non-susceptibility to amoxicillin, amoxicillin/clavulanic acid, cefuroxim, gentamicin and cotrimoxazol and only small differences (1-1.5%) for ciprofloxacin between AST interpretations by CLSI or EUCAST. However, for ceftazidime, and cefotaxime/ceftriaxone the proportion of non-susceptibility was substantially higher when EUCAST breakpoints were used (2-3%). The effects on time trends of the change in guidelines were limited, with only substantial differences for the oxymino-cephalosporins. Our study shows that the implementation of EUCAST breakpoints has a limited effect on the proportion of non-susceptible isolates and time trends in E. coli for most, but not all, antimicrobial agents. Collaborations Wetenschappelijk overzicht 2012 - 2013 Consequences of switching from a fixed 2 : 1 ratio of amoxicillin/ clavulanate (CLSI) to a fixed concentration of clavulanate (EUCAST) for susceptibility testing of Escherichia coli. Leverstein-van Hall MA, Waar K, Muilwijk J, Cohen Stuart J; ISIS-AR Study Group. J Antimicrob Chemother. 2013 Nov;68(11):2636-40 Collaborators (46) Sebens FW 114 115 Wetenschappelijk overzicht 2012 - 2013 Microbiologie Microbiologie Population distribution of Beta-lactamase conferring resistance to third-generation cephalosporins in human clinical Enterobacteriaceae in the Netherlands. Voets GM, Platteel TN, Fluit AC, Scharringa J, Schapendonk CM, Stuart JC, Bonten MJ, Hall MA; National ESBL Surveillance Working Group. PLoS One. 2012;7(12):e52102 Collaborators (32) Sebens FW Author information Department of Medical Microbiology, University Medical Centre Utrecht, Utrecht, The Netherlands. Abstract There is a global increase in infections caused by Enterobacteriaceae with plasmid-borne β-lactamases that confer resistance to third-generation cephalosporins. The epidemiology of these bacteria is not well understood, and was, therefore, investigated in a selection of 636 clinical Enterobacteriaceae with a minimal inhibitory concentration >1 mg/L for ceftazidime/ceftriaxone from a national survey (75% E. coli, 11% E. cloacae, 11% K. pneumoniae, 2% K. oxytoca, 2% P. mirabilis). Isolates were investigated for extendedspectrum β-lactamases (ESBLs) and ampC genes using microarray, PCR, gene sequencing and molecular straintyping (Diversilab and multi-locus sequence typing (MLST)). ESBL genes were demonstrated in 512 isolates (81%); of which 446 (87%) belonged to the CTX-M family. Among 314 randomly selected and sequenced isolates, bla(CTX-M-15) was most prevalent (n = 124, 39%), followed by bla(CTX-M-1) (n = 47, 15%), bla(CTX-M-14) (n = 15, 5%), bla(SHV-12) (n = 24, 8%) and bla(TEM-52) (n = 13, 4%). Among 181 isolates with MIC ≥16 mg/L for cefoxitin plasmid encoded AmpCs were detected in 32 and 27 were of the CMY-2 group. Among 102 E. coli isolates with MIC ≥16 mg/L for cefoxitin ampC promoter mutations were identified in 29 (28%). Based on Diversilab genotyping of 608 isolates (similarity cutoff >98%) discriminatory indices of bacteria with ESBL and/or ampC genes were 0.994, 0.985 and 0.994 for E. coli, K. pneumoniae and E. cloacae, respectively. Based on similarity cut-off >95% two large clusters of E. coli were apparent (of 43 and 30 isolates) and 21 of 21 that were typed by belonged to ST131 of which 13 contained bla(CTX-M-15). Our findings demonstrate that bla(CTX-M-15) is the most prevalent ESBL and we report a larger than previously reported prevalence of ampC genes among Enterobacteriaceae responsible for resistance to third-generation cephalosporins. Author information Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands. Abstract OBJECTIVES: The CLSI recommends a fixed 2 : 1 ratio of co-amoxiclav for broth microdilution susceptibility testing of Enterobacteriaceae, while EUCAST recommends a fixed 2 mg/L clavulanate concentration. The aims of this study were: (i) to determine the influence of a switch from CLSI to EUCAST methodology on Escherichia coli susceptibility rates; (ii) to compare susceptibility results obtained using EUCAST-compliant microdilution with those from disc diffusion and the Etest; and (iii) to evaluate the clinical outcome of patients with E. coli sepsis treated with co-amoxiclav in relation to the susceptibility results obtained using either method. METHODS: Resistance rates were determined in three laboratories that switched from CLSI to EUCAST cards with the Phoenix system (Becton Dickinson) as well as in 17 laboratories that continued to use CLSI cards with the VITEK 2 system (bioMérieux). In one laboratory, isolates were simultaneously tested by both the Phoenix system and either disc diffusion (n = 471) or the Etest (n = 113). Medical and laboratory records were reviewed for E. coli sepsis patients treated with co-amoxiclav monotherapy. RESULTS: Only laboratories that switched methodology showed an increase in resistance rates - from 19% in 2010 to 31% in 2011 (P < 0.0001). All isolates that tested susceptible by microdilution were also susceptible by disc diffusion or the Etest, but of 326 isolates that tested resistant by microdilution, 43% and 59% tested susceptible by disc diffusion and the Etest, respectively. Among the 89 patients included there was a better correlation between clinical response and measured MICs using the Phoenix system than the Etest. CONCLUSIONS: EUCAST methodology resulted in higher co-amoxiclav E. coli resistance rates than CLSI methodology, but correlated better with clinical outcome. EUCAST-compliant microdilution and disc diffusion provided discrepant results. Author information Department of Medical Microbiology, SALTRO, Utrecht, The Netherlands Abstract The concurrent presence of bla CTX-M-1 and bla TEM-52 genes on similar plasmids of Escherichia coli isolated from poultry, chicken meat and humans supports the occurrence of food-borne transmission of extended-spectrum beta-lactamase (ESBL) genes. ESBL-producing E. coli (ESBL-E. coli) are most frequently detected in hospitalised patients and are known to spread in healthcare settings. We hypothesised that poultry-associated (PA) ESBL genes are predominant in the community, where acquisition is fuelled by food contamination, whereas non-PA ESBL genes are predominant in hospitals, with acquisition fuelled by cross-transmission. Then, differences in antimicrobial selective pressure in hospitals and poultry would create differences in co-resistance between PA and non-PA ESBL-E. coli. We, therefore, determined the prevalence and co-resistance of PA and non-PA ESBL-E. coli in community-acquired and nosocomial urinary tract infections in humans and bla CTX-M-1 and bla TEM-52 isolates from poultry. A total of 134 human ESBL-E. coli urine isolates were included in this study. Isolates containing bla CTX-M-1 or bla TEM-52 were considered to be PA, with the remainder being non-PA. Also, 72 poultry ESBL-E. coli were included. Minimum inhibitory concentration (MIC) values were determined by broth microdilution. The prevalence of PA ESBL genes in isolates obtained in general practice and hospitals was 28 % versus 30 % (n.s.). Human PA ESBL-E. coli were more frequently susceptible to ciprofloxacin (51 % vs. 25 %; p = 0.0056), gentamicin (86 % vs. 63 %; p = .0.0082), tobramycin (91 % vs. 34 %; p = 0.0001) and amikacin (98 % vs. 67 %; p = 0.0001) compared to human non-PA ESBL-E. coli. PA ESBL-E. coli are not more prevalent in community acquired than nosocomial urine samples, but are more often susceptible to ciprofloxacin and aminoglycosides than non-PA ESBL-E. coli. This does not support the existence of different reservoirs of ESBL genes. Voordrachten Wetenschappelijk overzicht 2012 - 2013 Hyoscine N-butylbromide does not improve polyp detection during colonoscopy: a double-blind, randomized, placebo-controlled, clinical trial. De Brouwer EJ, Arbouw ME, Van der Zwet WC, Van Herwaarden MA, Ledeboer M, Jansman FGA, Ter Borg F Digestive Disease Week San Diego, 19 oktober 2013 116 117 Wetenschappelijk overzicht 2012 - 2013 Microbiologie Microbiologie Differences in the antibiotic susceptibility of human Escherichia coli with poultry-associated and non-poultry-associated extended-spectrum beta-lactamases. Platteel TN, Leverstein-Van Hall MA, Cohen Stuart JW, Voets GM, van den Munckhof MP, Scharringa J, van de Sande N, Fluit AC, Bonten MJ; ESBL National Surveillance Working Group. Eur J Clin Microbiol Infect Dis. 2013 Aug;32(8):1091-5. Collaborators (41) Sebens FW Outbreak of Clostridium difficile ribotype 027 in the Deventer Hospital and a nursing home. Van der Zwet WC, Wolf I, Bergervoet PWM, Sebens FW, Notermans DW, Kuijper EJ 22nd European Congress of Clinical Microbiology and Infectious Diseases Londen, 2 april 2012 Dragerschap van Extended-Spectrum Beta-Lactamases (ESBL’s) bij hemodialysepatiënten: retrospectief onderzoek naar het nut van routinematige screening naar ESBL-dragerschap en contactisolatie tijdens dialyseren. Oosterwijk PR, Bergervoet PHM, Van der Zwet WC, Sluiter HE Wetenschapsavond Deventer Ziekenhuis Deventer, 1 november 2012 Antibiotic disks stable for many months: do not throw them away. Van der Zwet WC, Viceisza-Blijden CD, Passcier CJ Voorjaarsvergadering Nederlandse Vereniging voor Medische Microbiologie Papendal, 17 april 2013 Wetenschappelijke Stages Microbiologie Effect van een Antimicrobial Stewardship Program op het antibioticagebruik in het Deventer Ziekenhuis Auteur : C. van der Kolk Begeleider: W.C. van der Zwet Samenvatting INTRODUCTIE: De laatste jaren neemt de antimicrobiële resistentie toe, wat voornamelijk wordt veroorzaakt door niet correct en onnodig gebruik van antibiotica. Door middel van een antimicrobial stewardship program (ASP) kan het antibioticagebruik in een ziekenhuis verbeterd worden, met als doel het vertragen of voorkomen van antimicrobiële resistentie, optimaliseren van keuze en duur van antimicrobiële therapie, verminderen van bijwerkingen van antimicrobiële therapie en het verminderen van morbiditeit, mortaliteit, ligduur en kosten ten gevolge van microbiële ziekte. In eerdere onderzoeken zijn ASP’s effectief gebleken in het verbeteren van correct antibioticagebruik Wetenschappelijk overzicht 2012 - 2013 118 119 Wetenschappelijk overzicht 2012 - 2013 Microbiologie en het verminderen van antimicrobiële resistentie. Richtlijnen voor het antibioticagebruik in het Deventer Ziekenhuis (DZ) zijn gebaseerd op de nationale antibioticarichtlijn van de Stichting Werkgroep Antibiotica Beleid (SWAB). DOELSTELLINGEN: Deze studie bestaat uit twee onderdelen. Ten eerste werd onderzocht of een ASP het antibioticagebruik in het DZ kon verbeteren. Ten tweede werd het antibioticagebruik en de antimicrobiële resistentie in het DZ vergeleken met de landelijke cijfers. METHODE: Een 12 weken durend prospectief cohortonderzoek werd verricht van 14-04-2012 t/m 20-07-2012. Alle patiënten die in deze periode werden behandeld met antibiotica werden geïncludeerd. Voor elke voorgeschreven antibioticakuur werd er onderzocht of deze was voorgeschreven volgens de lokale antibioticarichtlijn. Na 6 weken werden de artsen geïnformeerd over de studie en aandacht werd gevraagd voor het naleven van de antibioticarichtlijn. Hierna volgde wederom 6 weken inclusie van patiënten. Het verschil in correct antibioticagebruik voor en na de interventie werd met elkaar vergeleken. Verder werd het antibioticagebruik in het Deventer Ziekenhuis vergeleken met het landelijk antibioticagebruik door middel van de PReventie van ZIEkenhuisinfecties door Surveillance (PREZIES) studie. Ook werden de resistentiepercentages in het Deventer Ziekenhuis door middel van de Infectieziekten Surveillance Informatie Systeem – Antimicrobiële resistentie (ISIS-AR) database vergeleken met de landelijke resistentiepercentages. RESULTATEN: Na de interventie verbeterde het antibioticagebruik volgens de SWAB niet significant (van 67,8% naar 71,9% p-waarde 0,257). Het correcte antibioticagebruik verbeterde eveneens niet significant (van 72,9% naar 77,0% pwaarde 0,181). De correcte switch van intraveneuze naar orale antibiotica verbeterde significant (van 60,7% naar 80,8%, p-waarde 0,000). Uit de PREZIES prevalentie studie bleek dat het DZ in vergelijking met landelijke ziekenhuizen meer cefalosporinen gebruikt en minder amoxicilline/ clavulaanzuur. De antimicrobiële resistentie in het DZ komt overeen met de landelijke antimicrobiële resistentie. CONSLUSIE: Een interventie leidt in dit onderzoek niet significant tot een verbetering in het voorschrijven van antibiotica volgens de SWABrichtlijn en het correcte antibioticagebruik. Het switchen van intraveneuze naar orale therapie verbeterd significant door een interventie. In de toekomst zou een langer onderzoek en een uitgebreidere interventie mogelijk tot betere resultaten leiden.In het Deventer Ziekenhuis lijken meer cefalosporinen gebruikt te worden, waar landelijk meer amoxicilline/clavulaanzuur gebruikt wordt. De antimicrobiële resistentie in het Deventer Ziekenhuis lijkt gelijk te zijn met de landelijke antimicrobiële resistentie. Voor de toekomst lijkt het belangrijk om een ASP te ontwikkelen en te gebruiken om het correct antibioticagebruik te verbeteren en antimicrobiële resistentie te verminderen. Posters Neurologie MAIN OUTCOME MEASURES: The primary endpoint was the level of physical activity, measured every six months with a standardised seven day recall (LASA physical activity questionnaire-LAPAQ). Secondary endpoints included two other measures of physical activity (activity diary and ambulatory activity monitor), quality of life (Parkinson’s disease questionnaire-PDQ-39), and fitness (six minute walk test). RESULTS: 540 (92.2%) patients completed the primary outcome. During follow-up, overall time spent on physical activities (LAPAQ) was comparable between the groups (adjusted group difference 7%, 95% confidence interval -3 to 17%; P=0.19). Analyses of three secondary outcomes indicated increased physical activity in ParkFit patients, as suggested by the activity diary (difference 30%; P<0.001), the activity monitor (difference 12%; P<0.001), and the six minute walk test (difference 4.8 m; P=0.05). PDQ-39 did not differ between ParkFit patients and controls (difference -0.9 points; P=0.14). The number of fallers was comparable between ParkFit patients (184/299; 62%) and controls (191/287; 67%). CONCLUSIONS: The ParkFit behavioural change programme did not increase overall physical activity, as measured with the LAPAQ. The analysis of the secondary endpoints justifies further work into the possible merits of behavioural change programmes to increase physical activities in daily life in Parkinson’s disease. TRIAL REGISTRATION: Clinical trials NCT00748488. Collaborations Warfarin and aspirin in patients with heart failure and sinus rhythm. Homma S, Thompson JL, Pullicino PM, Levin B, Freudenberger RS, Teerlink JR, Ammon SE, Graham S, Sacco RL, Mann DL, Mohr JP, Massie BM, Labovitz AJ, Anker SD, Lok DJ, Ponikowski P, Estol CJ, Lip GY, Di Tullio MR, Sanford AR, Mejia V, Gabriel AP, del Valle ML, Buchsbaum R; WARCEF Investigators. N Engl J Med. 2012 May 17;366(20):1859-69. Collaborators (550) ten Holter JB Abstract : zie Cardiologie Wetenschappelijk overzicht 2012 - 2013 Neurologie Neurologie Promotion of physical activity and fitness in sedentary patients with Parkinson’s disease: randomised controlled trial. van Nimwegen M, Speelman AD, Overeem S, van de Warrenburg BP, Smulders K, Dontje ML, Borm GF, Backx FJ, Bloem BR, Munneke M; ParkFit Study Group. BMJ. 2013 Mar 1;346:f576. Collaborators (31) Lohmann HJ Author information Department of Neurology, Radboud University Nijmegen Medical Centre, Nijmegen Centre for Evidence Based Practice, Nijmegen, Netherlands. Abstract OBJECTIVE: To evaluate whether a multifaceted behavioural change programme increases physical activities in patients with Parkinson’s disease. DESIGN: Multicentre randomised controlled trial. SETTING: 32 community hospitals in the Netherlands, collaborating in a nationwide network (ParkinsonNet). PARTICIPANTS: 586 sedentary patients with idiopathic Parkinson’s disease aged between 40 and 75 years with mild to moderate disease severity (Hoehn and Yahr stage ≤ 3). INTERVENTION: Patients were randomly assigned to the ParkFit programme or a matched general physiotherapy intervention. ParkFit is a multifaceted behavioural change programme, designed specifically to achieve an enduring increase in the level of physical activity (coaches using motivational strategies; ambulatory feedback). 120 121 Wetenschappelijk overzicht 2012 - 2013 Oogheelkunde reveal any pathogenic changes, and microsatellite marker analysis showed that the chromosomal region did not segregate within the disease in this family. Genome-wide homozygosity mapping using single nucleotide polymorphism microarrays revealed a 28-Mb homozygous region encompassing the CRB1 gene, and direct sequencing disclosed a novel homozygous missense mutation (p.Gly833Asp) in CRB1. CONCLUSIONS: Previous studies associated mutations in the MFRP gene with the syndrome nanophthalmos-retinitis pigmentosa-foveoschisis-optic disc drusen. In this study, we demonstrated that a similar disease complex can be caused by mutations in the CRB1 gene. Publicaties Methylmalonic acid and homocysteine assessment in the detection of vitamin B12 deficiency in patients with bilateral visual loss. Pott JW, Klein Wassink-Ruiter JS, van Vliet A. Acta Ophthalmol. 2012 May;90(3):e252-3. High incidence of adverse reactions to locoregional anaesthesia containing hyaluronidase after uneventful ophthalmic surgery. Dieleman M, Bettink-Remeijer MW, Jansen J, Hoppenreijs VP, van der Pol R, Baarsma S, van Dijk K, de Waard-van der Spek FB, van Wijk RG, Zijlmans BL. Acta Ophthalmol. 2012 May;90(3):e245-6. A novel crumbs homolog 1 mutation in a family with retinitis pigmentosa, nanophthalmos, and optic disc drusen. Paun CC, Pijl BJ, Siemiatkowska AM, Collin RW, Cremers FP, Hoyng CB, den Hollander AI. Mol Vis. 2012;18:2447-53. Author information Department of Human Genetics, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. Abstract PURPOSE: The purpose of this study is to identify the genetic defect in a Turkish family with autosomal recessive retinitis pigmentosa, nanophthalmos, and optic disc drusen. METHODS: Ophthalmological examinations consisted of measuring the best-corrected visual acuity and the refractive error, electroretinography, optical coherence tomography, B-mode ultrasonography, and fundus photography. The involvement of the membrane frizzled-related protein (MFRP) gene in this family was studied with direct DNA sequencing of the coding exons of MFRP and with linkage analysis with microsatellite markers. After MFRP was excluded, genome-wide homozygosity mapping was performed with 250 K single nucleotide polymorphism (SNP) microarrays. Mutation analysis of the crumbs homolog 1 (CRB1) gene was performed with direct sequencing. RESULTS: Ophthalmological evaluation of both affected individuals in the family revealed a decreased axial length (18-19 mm), retinal dystrophy, macular edema, and hyperopia of >+8.0 diopters. Sequencing of MFRP did not Wetenschappelijk overzicht 2012 - 2013 122 123 Wetenschappelijk overzicht 2012 - 2013 Oogheelkunde Oogheelkunde Purified triamcinolone acetonide as antifibrotic adjunct in glaucoma filtering surgery. Hogewind BF, Pijl B, Hoyng CB, Theelen T. Graefes Arch Clin Exp Ophthalmol. 2013 Apr;251(4):1213-8. Author information Department of Ophthalmology, Medical Centre Haaglanden, Lijnbaan 32, 2512 VA The Hague, the Netherlands Abstract BACKGROUND: The purpose of this study is to compare the effects of mitomycin C (MMC) and triamcinolone acetonide (TAC) during and after glaucoma filtering surgery. METHODS: Retrospective interventional consecutive case series. All eyes underwent primary guarded trabeculectomy with either MMC or sub-Tenon TAC injection. Intraoperative and postoperative complications up to 5 years after the filtering surgery were evaluated. Differences between the two regimens were tested for statistical significance. RESULTS: A total of 64 trabeculectomies, of which 39 with MMC and 25 with TAC, were compared. At the 5-year follow-up examination three of the eyes treated with MMC (7.7 %) and none of the eyes treated with TAC had an intraocular pressure of more than 18 mmHg (p = 0.08). In the MMC group, three eyes required repeated glaucoma surgery (7.7 %; one trabeculectomy, one Baerveldt drainage implant, one cyclodiode laser treatment), while this was two eyes in the TAC group (8.0 %; one Baerveldt drainage implant, one cyclodiode laser treatment) (p = 0.97). CONCLUSION: The present study demonstrates that in primary trabeculectomy, the 5-year risk profiles of MMC and purified TAC are comparable, suggesting that as an antifibrotic agent TAC is at least as effective as MMC. Prospective randomized trials will need to confirm the agents’ relative longterm benefits. Opleidingsinstituut Collaborations Wetenschappelijk overzicht 2012 - 2013 Publicaties Medisch-wetenschappelijk onderzoek in Nederland: Hoge kwaliteit door samenwerking UMC’s en opleidingsziekenhuizen Marcel Levi, Henk E. Sluiter, Thed van Leeuwen, Maarten Rook en Guy Peeters Ned Tijdschr Geneeskd 2013;157:A6081. Doel: Het meten van de omvang en kwaliteit van het wetenschappelijk onderzoek in de UMC’s en in de Nederlandse opleidingsziekenhuizen, verenigd in de Samenwerkende Topklinische Opleidingsziekenhuizen (STZ). Opzet: Bibliometrische analyse. Methode: Het Centrum voor Wetenschap en Technologie Studies (CWTS) analyseerde de omvang en kwaliteit van het Nederlandse wetenschappelijk onderzoek in de UMC’s en de STZ-centra aan de hand van citatiescores. Als maat voor de kwaliteit werd de ‘mean normalized citation score’ (MNCS) gehanteerd. Deze werd berekend per ziekenhuis (STZ-ziekenhuis of UMC) en per discipline. De analyse betrof alle publicaties van de STZ-ziekenhuizen en UMC’s opgenomen in de ‘Web of Science’-database in de periode 19982010. Resultaten: Uit de CWTS-analyses kwam naar voren dat de MNCS van alle Nederlandse UMC’s ver boven het wereldgemiddelde ligt. Bij de STZziekenhuizen was de gemiddelde citatiescore lager bij onderzoek dat niet in samenwerking met een UMC wordt verricht, terwijl onderzoek dat door STZ-ziekenhuizen in samenwerking met een UMC was uitgevoerd zeer hoge citatiescores had. Conclusie: In Nederland wordt naar internationale maatstaven veel en goed medisch onderzoek gedaan en gepubliceerd. De uitkomsten van het CWTS-onderzoek leiden tot de conclusie dat het goed is als UMC’s en STZziekenhuizen doorgaan met het doen van gezamenlijk onderzoek. Deze ontwikkeling kan worden gestimuleerd door de huidige Onderwijs- en Opleidingsregio’s (OOR’s) om te vormen tot OORR’s (Onderwijs-, Opleiding- en Research Regio’s). Voor deze infrastructuur is het wel nodig dat er voldoende financiering beschikbaar blijft. Wetenschappelijk onderzoek in STZ ziekenhuizen. Sluiter HE. Wetenschap@Gelre 2012:5:6-7 124 125 Wetenschappelijk overzicht 2012 - 2013 Opleidingsinstituut Oogheelkunde The incidence of rhegmatogenous retinal detachment in The Netherlands. Van de Put MA, Hooymans JM, Los LI; Dutch Rhegmatogenous Retinal Detachment Study Group. Ophthalmology. 2013 Mar;120(3):616-22. Collaborators (48) Hoppenreijs VP. Author information Department of Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Abstract OBJECTIVE: To estimate the incidence and characteristics of rhegmatogenous retinal detachment (RRD) in The Netherlands in 2009. DESIGN: Retrospective, observational case series. PARTICIPANTS: All patients with RRD in the Dutch population in 2009. METHODS: By reviewing surgical logs, cases of primary RRD repair in 2009 were identified. Exclusion criteria included RRD before 2009 and exudative, tractional, or traumatic retinal detachments. Patient demographics, date of surgery, and lens status were documented. Incidence of RRD and 95% confidence intervals (CIs) were calculated based on the Poisson distribution. Age distribution, male-to-female ratio, and proportion of RRD patients with prior cataract extraction (CE) were determined. A Student t test was used to examine differences in the incidence of RRD between groups. MAIN OUTCOME MEASURES: Annual RRD incidence in the population and per gender-adjusted age category and proportion of RRD patients with prior CE. RESULTS: The annual RRD incidence was 18.2 per 100 000 people (95% CI, 11.4-18.8), with a peak incidence of 52.5 per 100 000 people (95% CI, 29.4-56.8) between 55 and 59 years of age. The Bilateral RRD rate was 1.67%. Macula-off presentation occurred in 54.5% of all RRD patients. Prior CE was noted in 33.5% of RRD eyes. The male-to-female ratio was 1.3:1, and RRD incidence was statistically significantly more frequent in males (P<0.0001). CONCLUSIONS: Rhegmatogenous retinal detachment is predominantly a disease of the population older than 50 years, and males are more susceptible to RRD. The annual RRD incidence is highly dependent on demographic characteristics. Orthopedie Knee Surg Sports Traumatol Arthrosc. 2012 Nov 18. [Epub ahead of print] Source Department of Orthopedic Surgery, Deventer Hospital, PO Box 5001, 7400 GC, Deventer, The Netherlands Abstract PURPOSE: Anterior knee pain (AKP) following total knee replacement (TKR) is both prevalent and clinically relevant. The purpose of this study was to systematically review the peer-reviewed literature, and to identify and assess the different modifiable and non-modifiable determinants that may be associated with the development of AKP in patients following primary TKR. METHODS: A systematic computerized database search (Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, and Google Scholar) was performed in January 2012. The quality of the studies was assessed using the GRADE approach. RESULTS: A total of 54 articles met the inclusion criteria. Variables that have been researched with regard to the prevalence of AKP include patient and knee-specific characteristics, prosthetic design, operative technique, treatment of the patella, and time of assessment. A weak correlation with AKP was found for specific retained presurgery gait patterns. A weak recommendation can be given for the use of femoral components with a posterior centre of rotation, resection of Hoffa’s fat pad, patellar rim electrocautery, and preventing combined component internal rotation. The correlation between postsurgical AKP and the degree of patellar cartilage wear, tibial component bearing strategies, and patellar resurfacing is inconclusive. Due to substantial heterogeneity of the included studies, no meta-analysis was performed. CONCLUSIONS: No single variable is likely to explain the differences in the reported rates of AKP, although variables leading to abnormal patellofemoral joint loading appear to be of special significance. LEVEL OF EVIDENCE: III. Publicaties Effects of short-term addition of NSAID to diuretics and/or RAASinhibitors on blood pressure and renal function. Nygård P, Jansman FG, Kruik-Kollöffel WJ, Barnaart AF, Brouwers JR. Int J Clin Pharm. 2012 Jun;34(3):468-74. Author information Department of Pharmacy, Diaconessen Hospital Meppel & Bethesda Hospital Hoogeveen, Hoogeveenseweg 38, Postbox 502, 7940 AM, Meppel, The Netherlands. Abstract: zie Ziekenhuisfarmacie Determinants of anterior knee pain following total knee replacement: a systematic review. van Jonbergen HP, Reuver JM, Mutsaerts EL, Poolman RW. Wetenschappelijk overzicht 2012 - 2013 126 127 Wetenschappelijk overzicht 2012 - 2013 Orthopedie Orthopedie Differences in the stress distribution in the distal femur between patellofemoral joint replacement and total knee replacement: a finite element study. van Jonbergen HP, Innocenti B, Gervasi GL, Labey L, Verdonschot N. J Orthop Surg Res. 2012 Jun 15;7(1):28. Abstract BACKGROUND: Patellofemoral joint replacement is a successful treatment option for isolated patellofemoral osteoarthritis. However, results of later conversion to total knee replacement may be compromised by periprosthetic bone loss. Previous clinical studies have demonstrated a decrease in distal femoral bone mineral density after patellofemoral joint replacement. It is unclear whether this is due to periprosthetic stress shielding. The main objective of the current study was to evaluate the stress shielding effect of prosthetic replacement with 2 different patellofemoral prosthetic designs and with a total knee prosthesis. METHODS: We developed a finite element model of an intact patellofemoral joint, and finite element models of patellofemoral joint replacement with a Journey PFJ prosthesis, a Richards II prosthesis, and a Genesis II total knee prosthesis. For each of these 4 finite element models, the average Von Mises stress in 2 clinically relevant regions of interest were evaluated during a simulated squatting movement until 120 degrees of flexion. RESULTS: During deep knee flexion, in the anterior region of interest, the average Von Mises stress with the Journey PFJ design was comparable to the physiological knee, while reduced by almost 25% for both the Richards II design and the Genesis II total knee joint replacement design. The average Von Mises stress in the supracondylar region of interest was similar for both patellofemoral prosthetic designs and the physiological model, with slightly lower stress for the Genesis II design. CONCLUSIONS: Patellofemoral joint replacement results in periprosthetic stress-shielding, although to a smaller degree than in total knee replacement. Specific patellofemoral prosthetic design properties may result in differences in femoral stress shielding. Is there evidence for accelerated polyethylene wear in uncemented compared to cemented acetabular components? A systematic review of the literature. van der Veen HC, van Jonbergen HP, Poolman RW, Bulstra SK, van Raay JJ. Int Orthop. 2013 Jan;37(1):9-14. Author information Department of Orthopaedic Surgery, Martini Hospital, Groningen, The Netherlands. Abstract Joint arthroplasty registries show an increased rate of aseptic loosening in uncemented acetabular components as compared to cemented acetabular components. Since loosening is associated with particulate wear debris, we postulated that uncemented acetabular components demonstrate a higher polyethylene wear rate than cemented acetabular components in total hip arthroplasty. We performed a systematic review of the peer-reviewed literature, comparing the wear rate in uncemented and cemented acetabular components in total hip arthroplasty. Studies were identified using MEDLINE (PubMed), EMBASE and the Cochrane Central Register of Controlled Trials. Study quality was assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. The search resulted in 425 papers. After excluding duplicates and selection based on title and abstracts, nine studies were found eligible for further analysis: two randomised controlled trials, and seven observational studies. One randomised controlled trial found a higher polyethylene wear rate in uncemented acetabular components, while the other found no differences. Three out of seven observational studies showed a higher polyethylene wear in uncemented acetabular component fixation; the other four studies did not show any differences in wear rates. The available evidence suggests that a higher annual wear rate may be encountered in uncemented acetabular components as compared to cemented components. a systematic computerized database search and literature review (Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, MEDLINE, and EMBASE). The quality of the included studies was assessed using the GRADE approach. RESULTS: A Total of 12 articles met the inclusion criteria. Patient satisfaction has been assessed using a multitude of scoring systems. In total, 170 of the 266 patients (64%) were satisfied with the results of secondary patellar resurfacing. CONSLUSION AND RECOMMENDATION: Based on the best available evidence, in patients having persistent anterior knee pain following primary total knee replacement without patellar resurfacing, secondary resurfacing is an available surgical treatment option. However, the number of patients not satisfied with the results emphasizes the need for proper patient counseling. Patient satisfaction after secondary patellar resurfacing following primary Total knee replacement: results of two cases and review of the literature. Ashvin V. Boeddha, Hans-Peter W. van Jonbergen Nederlands Tijdschrift voor Orthopedie 2013;20(4):110-6. Abstract BACKGROUND: Treatment of anterior knee pain following primary total knee replacement with secondary patellar resurfacing is a controversial procedure with uncertain outcomes. METHODS: With use of the PICO-format, we present two cases of patients having anterior knee pain after primary total knee replacement, followed by Wetenschappelijk overzicht 2012 - 2013 128 129 Wetenschappelijk overzicht 2012 - 2013 Orthopedie Orthopedie High prevalence of pseudotumors in patients with a Birmingham Hip Resurfacing prosthesis: a prospective cohort study of one hundred and twenty-nine patients. Bisschop R, Boomsma MF, Van Raay JJ, Tiebosch AT, Maas M, Gerritsma CL. J Bone Joint Surg Am. 2013 Sep 4;95(17):1554-60. Author information Department of Orthopedics, Martini Hospital, Van Swietenplein 1, 9728 NT Groningen, The Netherlands. Abstract BACKGROUND: Recently, concern has emerged about pseudotumors (lesions that are neither malignant nor infective in the soft tissues surrounding total hip arthroplasty components) after hip arthroplasties with metal-onmetal bearings. Patients treated in our hospital for degenerative arthritis of the hip with a Birmingham Hip Resurfacing (BHR) prosthesis were invited to return for follow-up evaluation. The prevalence and clinical relevance of pseudotumors were investigated. Risk factors for pseudotumor formation were sought. METHODS: A single-center cross-sectional prospective cohort study was conducted and included all patients who received a BHR from 2005 to 2010 in Martini Hospital, Groningen, The Netherlands. Data were collected on patient and surgical characteristics, clinical hip outcome scores (Harris hip score and Oxford score), serum metal ion levels (cobalt and chromium), and radiographs. A computed tomographic scan (without metal suppression) was made. In patients who had a revision, tissue samples were histologically examined. RESULTS: Originally, there were 129 patients with 149 BHRs. Four patients (six hips; 4%) were lost to follow-up. Our final cohort consisted of 125 patients (143 hips). From this final cohort, eleven patients (twelve hips) had a revision, and three of them (three hips) had the revision before the present Differences in the stress distribution in the distal femur between patellofemoral joint replacement and total knee replacement: A finite element study. H.P.W. van Jonbergen 2nd research forum, Knee Center Leuven, 20 november 2012 study was conducted. Seven patients (eight hips; 5.6%) had a revision because of a symptomatic pseudotumor. Survival analysis showed an implant survival rate of 87.5% at five years (failure was defined as a revision for any reason). A pseudotumor was found on computed tomography in thirty-nine patients (forty hips; 28%). Of those patients, ten (eleven hips; 28%) had complaints involving groin pain and discomfort, a noticeable mass, or paresthesia. Symptomatic pseudotumors were significantly larger than asymptomatic pseudotumors (a mean volume of 53.3 cm3 compared with 16.3 cm3; p = 0.05). A serum cobalt level of >85 nmol/L was a predictor for pseudotumor formation (odds ratio, 4.9). CONCLUSIONS: Pseudotumor formation occurred in 28% of hips after an average follow-up of forty-one months. Most pseudotumors (72.5%) were asymptomatic. Larger pseudotumors were associated with more complaints. Survival analysis showed an implant survival of 87.5% at five years. Failure occurred in 5.6% (eight) of 143 hips because of a symptomatic pseudotumor. Posters Single shot femoral nerve block offers superior postoperative mobilisation at an equal analgesia level after total. Knee arthroplasty compared to continuous nerve block using a catheter. Author(s): Heeremans E.H., Pape N., Koorevaar R.C.T., Cobben J.M.G. European Society of Anesthesiology Parijs 9-12 juni 2012 Intermittent pain around the hip. Egbert Veen, Daniëlle Langeloo BMJ 2013;347:f4972. Collaborations Bias towards dementia: are hip fracture trials excluding too many patients? A systematic review. Hebert-Davies J, Laflamme GY, Rouleau D; HEALTH and FAITH investigators. Injury. 2012 Dec;43(12):1978-84. Collaborators (604) van Jonbergen HP, Reuver JM, Barnaart AF,Koorevaar R Author information University of Montréal, Hôpital du Sacré Cœur, 5400 Gouin Ouest, Local J-3245, Montréal, Québec, Canada H4J 1C5. Abstract : Zie Heelkunde Voordrachten Orthopedie Orthopedie Anatomy, physiology and electrocauterisation of the patellofemoral joint. H.P.W. van Jonbergen IMUKA Maastricht, 29 maart 2012 Wetenschappelijk overzicht 2012 - 2013 130 131 Wetenschappelijk overzicht 2012 - 2013 Radiologie suspicious LNs were located outside the conventional clinical target volume. Therefore, these techniques could help to individualize treatment selection and enable image-guided radiotherapy for patients with PCa LN metastases. Publicaties Clear cell sarcoma of the ankle. Wiersma HW, de Jonge MC, Bras J, Schaap GR, Maas M. JBR-BTR. 2012 May-Jun;95(3):172-3. Source Department of Radiology, Deventer Ziekenhuis, Deventer, The Netherlands. Wetenschappelijk overzicht 2012 - 2013 AIRP best cases in radiologic-pathologic correlation: Brunner gland hamartoma. Houwers JB, de Bie SH, Hofstee N. Radiographics. 2012 Jan-Feb;32(1):213-8. Source Department of Radiology and Pathology, Deventer Ziekenhuis, Nico Bolkesteinlaan 75, 7416 SE Deventer, the Netherlands. Een turnster met pijnlijke polsen. Bart Lubberts, Diederik T.D. Oei, Robin E. Westerbeek Ned Tijdschr Geneeskd. 2013;157:A5899. Casus Een 11-jarige turnster kwam op de polikliniek Sportgeneeskunde met pijn aan beide polsen die sinds 1 jaar bestond. Patiënte vertelde dat de pijn tijdens en na elke training optrad. Anamnestisch was er geen evident trauma bekend. Bij lichamelijk onderzoek zagen wij een niet-afwijkende stand van de polsen, zonder zwellingen of bewegingsbeperkingen. Als de polsen in de eindstanden van dorsale en palmaire flexie werden bewogen, was dit rondom de gehele pols gevoelig. Alle weerstandstesten waren positief, maar de kracht was niet verminderd. Een röntgenfoto van de linker pols toonde een verwijding van de epifysairschijven en onregelmatige contouren van de metafysen van de distale radius en ulna (figuur). Op de röntgenfoto van de rechter pols waren enigszins onregelmatige contouren van de metafyse van de distale radius zichtbaar, maar geen verbreding van de epifysairschijf. Wij stelden de diagnose ‘gymnast’s wrist’ beiderzijds. Deze aandoening komt vaker voor bij meisjes, voornamelijk bij jonge, actieve turners en gewichtheffers in de leeftijd 9-16 jaar. Tijdens afzet- en tiloefeningen is de pols naar dorsaal geflecteerd en ontstaat er veel axiale compressie. Door de repeterende belasting treden er microfracturen op, met als gevolg reversibele ischemie van de epifysairschijven. Dit leidt tot osteolyse en vertraagde skeletrijping. De behandeling is conservatief: geen belastende activiteiten tot de klachten verdwenen zijn. Zodra de patiënt klachtenvrij is, mag de belasting weer langzaam worden opgebouwd. 132 133 Wetenschappelijk overzicht 2012 - 2013 Radiologie Radiologie Value of PET/CT and MR Lymphography in Treatment of Prostate Cancer Patients with Lymph Node Metastases. Fortuin AS, Deserno WM, Meijer HJ, Jager GJ, Takahashi S, Debats OA, Reske SN, Schick C, Krause BJ, van Oort I, Witjes AJ, Hoogeveen YL, Th van Lin EN, Barentsz JO. Int J Radiat Oncol Biol Phys. 2012 Nov 1;84(3):712-8. Source Department of Radiology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. Abstract PURPOSE: To determine the clinical value of two novel molecular imaging techniques: (11)C-choline positron emission tomography (PET)/computed tomography (CT) and ferumoxtran-10 enhanced magnetic resonance imaging (magnetic resonance lymphography [MRL]) for lymph node (LN) treatment in prostate cancer (PCa) patients. Therefore, we evaluated the ability of PET/ CT and MRL to assess the number, size, and location of LN metastases in patients with primary or recurrent PCa. METHODS AND MATERIALS: A total of 29 patients underwent MRL and PET/CT for LN evaluation. The MRL and PET/CT data were analyzed independently. The number, size, and location of the LN metastases were determined. The location was described as within or outside the standard clinical target volume for elective pelvic irradiation as defined by the Radiation Therapy Oncology Group. Subsequently, the results from MRL and PET/ CT were compared. RESULTS: Of the 738 LNs visible on MRL, 151 were positive in 23 of 29 patients. Of the 132 LNs visible on PET/CT, 34 were positive in 13 of 29 patients. MRL detected significantly more positive LNs (p < 0.001) in more patients than PET/CT (p = 0.002). The mean diameter of the detected suspicious LNs on MRL was significantly smaller than those detected by PET/CT, 4.9 mm and 8.4 mm, respectively (p < 0.0001). In 14 (61%) of 23 patients, suspicious LNs were found outside the clinical target volume with MRL and in 4 (31%) of 13 patients with PET/CT. CONCLUSION: In patients with PCa, both molecular imaging techniques, MRL and (11)C-choline PET/CT, can detect LNs suspicious for metastasis, irrespective of the existing size and shape criteria for CT and conventional magnetic resonance imaging. On MRL and PET/CT, 61% and 31% of the Echogeleide musculoskeletale interventies. Westerbeek E HVDO; bij- en nascholing Deventer, 2-3 oktober 2013 Voordrachten Diffusion Weighted Imaging (DWI) as a mammacarcinoma characteristic: association of Apparent Diffusion Coefficient (ADC) and pathological outcome in patients treated with neoadjuvant chemotherapie. V.H.P. Tran ECR 2012, European Society of Radiology Wenen, 1 maart 2012 Echografie in acute buik & interventieradiologie Klok CFM HVDO; bij- en nascholing Deventer, 2-3 oktober 2013 Fracturen. R.E. Westerbeek Co-assistenten onderwijsdag Deventer, 4 juli 2012 Apofyseolyse in de bekkenregio bij jong volwassenen. Derks RPH, van Dijk RAJM, Westerbeek RE Radiologendagen ’s-Hertogenbosch, 26 september 2013 Echogeleide MSK-interventies. R.E. Westerbeek Radiologie in de praktijk. Thema avond Regionaal Genootschap Fysiotherapie Twente en IJsselzoom Apeldoorn, 25 september 2012 Volume dependency of bladder wall thickniess in children: effects on normal cut off values. Seehofnerová A, van Dijk RAJM Radiologendagen ’s-Hertogenbosch, 26 september 2013 Posters Kennismaking met de radiologie in vogelvlucht. R.E. Westerbeek Radiologie in de praktijk. Thema avond Regionaal Genootschap Fysiotherapie Twente en IJsselzoom Apeldoorn, 25 september 2012 Delayed enhancement versus first-pass perfusion imaging at rest Swart LE, Koster K, Jaspers MMJJR, Van Wijngaarden J, Uijlings R, Badings E, Martens FMAC 99th Scientific Assembly and Annual Meeting of the Radiological Society of North America Chicago USA, 5 dec 2013 Schouderluxaties C.J. Van Manen, R.A.J.M. van Dijk, R.E. Westerbeek Radiologendagen ’s Hertogenbosch, 28 september 2012 Dislocations of the glenohumeral joint. Van Manen CJ, Van Dijk RAJM, Westerbeek RE ECR 2013, European Congres of Radiology Wenen, Oostenrijk, 7 maart 2013 Post-procedural infection after sonographically guided percutaneous needle lavage in calcific tendinitis of the shoulder using only local sterilization of the skin and probe. Tran VHP, Westerbeek RE ESSR 2013, European Society of Musculoskeletal Radiology Marbella, Spanje, 13 juni 2013 CaSc en CCTA: Tool voor Huisarts? Koster K HVDO; bij- en nascholing. Deventer, 2-3 oktober 2013 Wetenschappelijk overzicht 2012 - 2013 134 135 Wetenschappelijk overzicht 2012 - 2013 Radiologie Naam Radiologie Beeldvorming en work up bij osteoporose. Westerbeek RE HVDO; bij- en nascholing. Deventer, 2-3 oktober 2013 Spoedeisende Hulp Ultrasound imaging of colorectal liver metastases: still relevant of already outdated? Al Ali C, van Dijk RAJM, Bosker RJI, Klok CFM, Liem MSL Essen, Duitsland, 2013 Publicaties The role of FDG PET-CT in the preoperative work up of colorectal liver metastasis. Al Ali C, Manders JMB, Smit FW, Bosker RJI, Liem MSL Essen, Duitsland, 2013 [An 85-year-old woman with an kyphosis and dyspnea]. [Article in Dutch] Langenberg LC, Tebbes M, de Leeuw B. Ned Tijdschr Geneeskd. 2012;156(25):A3308. Source Deventer Ziekenhuis, Deventer, Afd. Spoedeisende Hulp, the Netherlands. Abstract An 85-year-old woman with a severe kyphosis presented at the emergency room because of progressive dyspnea and cough, without other complaints. During auscultation, peristaltic sounds were heard over the thorax. A massive diaphragmatic hernia with intrathoracic stomach, small intestine and colon, was seen on CT-scan. Cost-effectiveness of 3T MRI versus 1,5T in imaging of the lumbar spine in a general radiology practice. R.E. Westerbeek, B Zonneveld, B.G Ziedses des Plantes European Society of Skeletal Radiology, annual meeting 2012 Innsbruck, 29 juni 2012 Presynaptic dopamine transporter SPET scanning for the differential diagnosis of parkingsonism in Tartu University Hospital. H. Lindmae, P. Taba, K. Ulst EFNS Stockholm, 9 september 2012 Wetenschappelijk overzicht 2012 - 2013 Spoedeisende Hulp Radiologie Accuracy of Magnetic Resonance Direct Thrombus Imaging (MRDTI) As a Novel Tool in the Diagnosis of Acute Ipsilateral Recurrent Deep Vein Thrombosis Melanie Tan, MD*,1, Gerben C Mol, MD*,2, Marcel A Van de Ree, MD, PhD*,2, Cornelis J Van Rooden, MD, PhD*,3, Robin E Westerbeek, MD*,4, Antonio Iglesias del Sol, MD, PhD*,5, Albert de Roos, MD, PhD*,6 and Menno V. Huisman, MD, PhD*,1 1 Thrombosis and Haemostasis, Leiden University Medical Center, Leiden, Netherlands, 2 Internal Medicine, Diakonessenhuis, Utrecht, Netherlands, 3 Radiology, Haga Teaching Hospital, The Hague, Netherlands, 4 Radiology, Deventer Hospital, Deventer, Netherlands, 5 Internal Medicine, Rijnland Hospital, Leiderdorp, Netherlands, 6 Radiology, Leiden University Medical Center, Leiden, Netherlands 54th ASH Annual meeting and exposition Atlanta, 10 december 2012 136 137 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Abstract Relevancy of potential drug-drug interactions (pDDIs) is crucial in alerting system design. However, the way this relevancy is perceived is not well understood. The main objective of this study was to gauge and identify differences in perceptions of intensivists and pharmacists about pDDI relevancy in the ICU. Interactions were defined according to the national medication database using a computerized algorithm. Intensivists and pharmacists filled in a questionnaire to score their perceptions on relevancy of encountered pDDIs types. We conducted a focus group session to discuss pDDIs receiving markedly different relevancy scores. The questionnaire addressed 53 pDDI types. Pharmacists rated 29 pDDI types (54.7%) in the broad category “relevant” versus 16 (30.2%) for intensivists (p-value&lt;0.001). The pharmacists and intensivists gave the same scores for 23 pDDI types (12 as relevant, and 11 as not relevant), and scored 30 types differently. The focus group discussion resulted in a total of 36 relevant and 17 not relevant types. Compared to the pharmacists in this panel, the intensivists were less inclined to consider a pDDI type as relevant. It is important to tailor medication databases with information about evidence and severity of pDDIs to the environment in which they are used. Publicaties Dopamine agonists and ischemic complications in Parkinson’s disease: a nested case-control study. Arbouw ME, Movig KL, Guchelaar HJ, Neef C, Egberts TC. Eur J Clin Pharmacol. 2012 Jan;68(1):83-8. Abstract BACKGROUND: It has been suggested that ergoline dopamine agonists can cause ischemic complications. The effect of dopamine agonists in general on the prevalence of ischemic events in patients with Parkinson’s disease (PD) has not been studied. OBJECTIVE: Our aim was to investigate the association between the use of dopamine agonists and hospitalization due to ischemic events in patients with PD. METHODS: We performed a nested case-control study using the PHARMO Institute for Drug Outcome Research database. All patients issued at least one prescription for levodopa after the age of 55 years between 1994 and 2006 were initially identified. Cases were patients who were hospitalized for the first time after November 1997 for an ischemic event and were matched to as many as four controls. Exposure to dopamine agonists during the year preceding the index date was identified. RESULTS: The study population consisted of 542 cases and 2,155 controls. The mean effect of dopamine agonist use 1 year prior to the index date on ischemic events requiring hospitalization is shown with 95% probability in the 0.95-1.49 range. Stratified results according to the type of dopamine agonist showed no risk differences between ergoline and nonergoline agonists. CONCLUSIONS: This study does not support an association between dopamine agonist use and an increased risk of ischemic events requiring hospitalization. Relevance of drug-drug interaction in the ICU - perceptions of intensivists and pharmacists. Askari M, Eslami S, Louws M, Dongelmans D, Wierenga P, Kuiper R, Abu-Hanna A. Stud Health Technol Inform. 2012;180:716-20. Author information Dep. of Medical Informatics, Academic Medical Center, Amsterdam, the Netherlands. Wetenschappelijk overzicht 2012 - 2013 138 139 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Ziekenhuisfarmacie Acute intoxication patients presenting to an emergency department in The Netherlands: admit or not? Prospective testing of two algorithms. Ambrosius RG, Vroegop MP, Jansman FG, Hoedemaekers CW, Aarnoutse RE, van der Wilt GJ, Kramers C. Emerg Med J. 2012 Jun;29(6):467-72. Author information Department of Pharmacology and Toxicology, Radboud University Nijmegen Medical Centre, PO Box 9101, 6525 EZ Nijmegen, The Netherlands. Abstract STUDY OBJECTIVE: After acute intoxication, most patients presenting to the emergency department (ED)--76% of them in The Netherlands--are admitted to hospital. Many will not need medical treatment on the ward. The authors tested two algorithms in the ED, based on vital parameters, ECG findings, and ingested substances, to identify patients who will receive treatment in hospital. METHODS: This prospective inception study enrolled patients aged 14 years and older presenting with acute intoxication between January 2006 and April 2008 to a Dutch university hospital. An algorithm was developed based on a previous retrospective study and the medical literature. In a second algorithm the clinical course during the stay in the ED was also taken into account. RESULTS: Of 313 patients presenting with acute intoxication to the ED, 134 (42.8%) were admitted to a ward for somatic care, but only 74 (23.6%) Ziekenhuisfarmacie Studies pertaining to the ACOVE quality criteria: a systematic review. Askari M, Wierenga PC, Eslami S, Medlock S, De Rooij SE, Abu-Hanna A. Int J Qual Health Care. 2012 Feb;24(1):80-7. Abstract PURPOSE: /st> To identify and uniformly describe studies employing the Assessing Care Of Vulnerable Elders (ACOVE) quality indicators within a comprehensive thematic model that reflects how the indicators were used. DATA SOURCES: /st> A systematic search of MEDLINE, EMBASE and CINAHL was conducted. STUDY SELECTION: /st> English-language studies meeting our criteria published prior to January 2010. Data extraction Included studies were analyzed and described by two independent researchers. RESULTS OF DATA SYNTHESIS: /st> A total of 41 articles met our selection criteria. Studies were classified into the themes ‘Application of indicators’ (32 studies) and ‘ ANALYSIS: and development of indicators’ (13 studies). ‘Application’ studies included assessing quality of care, influencing behavior of health professionals and examining the association of quality of care with other factors. ‘Analysis and development’ included studies developing new indicator sets, and those adapting and validating the original quality indicators to new settings. CONCLUSIONS: st> The indicators were used in a wide range of applications with two main foci: the assessment of quality of care for elderly patients, and investigating the feasibility of similar indicators and their adaptation to new settings. Very few of the studies published to date have addressed the goal of care improvement. We foresee an important role for application of indicators that proactively help health-care professionals to deliver the right care at the right time, for example by resorting to decision support systems. Wetenschappelijk overzicht 2012 - 2013 Clomipramine concentration and withdrawal symptoms in 10 neonates. Ter Horst PG, van der Linde S, Smit JP, den Boon J, van Lingen RA, Jansman FG, De Jong-van den Berg LT, Wilffert B. Br J Clin Pharmacol. 2012 Feb;73(2):295-302. 140 141 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Analysis of medication information exchange at discharge from a Dutch hospital. van Berlo-van de Laar IR, Driessen E, Merkx MM, Jansman FG. Int J Clin Pharm. 2012 Aug;34(4):524-8. Source Clinical Pharmacy Deventer Hospital, Nico Bolkesteinlaan 75, 7416 SE, Deventer, The Netherlands. Abstract BACKGROUND: At hospitalisation and discharge the risk of errors in medication information transfer is high. OBJECTIVE: To study the routes by which medication information is transferred during discharge from Deventer Hospital, and to improve medication information transfer. SETTING: Eight hospital wards of the Deventer Hospital. METHOD: From December 6 to 17th 2010, the following data was recorded across eight hospital wards: the identification number of discharged patients, the date of discharge and the route by which medication information was transferred. The possible route categories recorded were the Pharmacy Service Point, the hospital’s public pharmacy, and “other” routes (which had to be specified). Validation of the data was performed by cross-checking the information collected by the hospital’s Admission Office, the Pharmacy Service Point and the hospital’s public pharmacy, in addition to electronic patient files, interviews with ward staff and, where necessary, interviews with the concerned patients. Main outcome measure Route of medication information transfer at discharge in all discharged patients. RESULTS: A total of 629 patients were included in the study. The routes of transfer were: Pharmacy Service Point 281 patients (44 %), the hospital’s public pharmacy 54 patients (9 %), and other routes 44 patients (7 %). Other routes were most recorded at the children’s ward, the short stay and cardiology ward. In 250 patients (40 %), there was no transfer of information by the Pharmacy Service Point because they were registered as using no medication or as experiencing no medication changes during hospitalisation. CONCLUSION: Medication information was transferred for 53 % of the discharged patients, which is close to the maximum achievable result. Further improvement of medication transfer in Deventer Hospital can be made by adjusting the current procedure and by educating the ward staff about the importance and the clinical practice of this procedure. were treated on the ward. Algorithm 1 had 91.9% sensitivity (95% CI 82.6% to 96.7%) and 53.6% specificity (95% CI 47.0% to 60.0%). Algorithm 2 had 90.5% sensitivity (95% CI 80.9% to 95.8%) and 65.3% specificity (95% CI 58.8% to 71.2%). In line with hospital policy, several patients received Nacetylcysteine treatment for subtoxic paracetamol ingestion because they presented outside of office hours, when no measurements of blood paracetamol concentration are performed by the laboratory. When these patients are considered as untreated, both algorithms had 98.5% sensitivity (95% CI 90.6% to 99.9%). CONCLUSION: The algorithms had good sensitivity and better specificity than current clinical practice in most hospitals. It is too early to advocate their implementation, but results indicate that it is possible to use clinical parameters objectively to reduce unnecessary admissions to the ward. Abstract WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT: Antidepressants are associated with withdrawal symptoms after in utero exposure. Half-life of clomipramine in neonates is prolonged compared with that in adults. WHAT THIS STUDY ADDS: We present 10 cases of neonates exposed in utero to clomipramine, with detailed information about withdrawal symptoms and pharmacokinetics.There is a high and severe complication rate in our cohort regarding the mother and the neonate. AIM: After in utero exposure to tricyclic antidepressants, neonatal withdrawal symptoms have been reported with an estimated incidence between 20 and 50%; however, few data are available for clomipramine. This could also be the case for neonatal pharmacokinetic clomipramine parameters and so this study was set up. METHODS: Babies exposed to clomipramine in utero were included in an observational study, approved by the local ethics committee, after written informed consent. Withdrawal symptoms were scored at 12, 24 and 48h after birth using the Finnegan score. Plasma concentrations were determined using an in-house-developed, validated liquid chromatography with mass detection (LC-MSMS) method at 0, 12, 24 and 48h after birth. RESULTS: We found that three of 11 pregnancies were complicated with pre-eclampsia. Ten neonates were observed for clomipramine withdrawal symptoms. The observed withdrawal symptoms were too short a period of sleep after feeding (6), poor feeding (3), mild to severe tremors (6), hyperactive Moro reflex (3) and respiratory rate >60 breaths min(-1. Serious withdrawal reactions, such as tachycardia and cyanosis, were seen. We calculated a half-life value of 42 ± 16h for clomipramine in neonates. Only a weak correlation was found between withdrawal reactions and clomipramine plasma concentration or desmethylclomipramine plasma concentration. CONCLUSIONS: In neonates, clomipramine is eliminated with a half-life value of 42h, compared with 20h in adults. In two of 10 neonates, tachycardia and cyanosis were seen as serious withdrawal symptoms after maternal use of clomipramine. Abstract BACKGROUND: The combined post-operative use of diuretics and/or reninangiotensin-aldosterone system (RAAS) inhibitors may increase the risk of nonsteroidal anti-inflammatory drug (NSAID) associated renal failure because of a drug-drug interaction. OBJECTIVE: The aim of this study was to investigate the effect of the shortterm (<4 days) post-operative combined use of NSAIDs with diuretics and/or RAAS inhibitors on renal function and blood pressure. SETTING: One teaching hospital in the Netherlands. METHOD: The study-design was a prospective, observational cohort-study. Based on postoperative treatment with NSAIDs, the intervention-group was compared to a control-group (no NSAIDs treatment). MAIN OUTCOME MEASURE: Systolic blood pressure and renal function expressed by the estimated glomular filtration rate (eGFR) calculated with the modification of renal desease formula. RESULTS: 97 patients were included in the intervention-group, 53 patients in the control-group. Patient characteristics were comparable except for one variable: ‘combined use of a diuretic with a RAAS inhibitor’ which was higher in the control-group (62 vs. 43 %, p = 0.046). Odds ratio for clinically relevant increase in systolic blood pressure was 0.66 (CI95 % 0.3-1.5). Odds ratio for clinical relevant decrease in renal function was 2.44 (CI95 % 1.1-5.2). On day 4 eGFR of 3 patients in the intervention- and 1 in the control-group was <50 ml/min/1.73 m(2). CONCLUSION: Odds ratios showed no significant difference of a clinically relevant increase in systolic blood pressure but showed a higher risk for a clinically relevant decrease in renal function in the intervention group. However this decrease resulted in a relevant impaired renal function (<50 ml/ min/1.73 m(2)) in only 3 patients in the interventiongroup and 1 patient in the control-group. In the post-operative patient, without preexisting impaired renal function, concurrent diuretics and/or renin-angiotensinaldosterone system inhibitor therapy can be combined with short-term NSAID treatment. Effects of short-term addition of NSAID to diuretics and/or RAASinhibitors on blood pressure and renal function. Nygård P, Jansman FG, Kruik-Kollöffel WJ, Barnaart AF, Brouwers JR. Int J Clin Pharm. 2012 Jun;34(3):468-74. Author information Department of Pharmacy, Diaconessen Hospital Meppel & Bethesda Hospital Hoogeveen, Hoogeveenseweg 38, Postbox 502, 7940 AM, Meppel, The Netherlands. Wetenschappelijk overzicht 2012 - 2013 142 143 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Ziekenhuisfarmacie Hyoscine N-butylbromide does not improve polyp detection during colonoscopy: a double-blind, randomized, placebo-controlled, clinical trial. de Brouwer EJ, Arbouw ME, van der Zwet WC, van Herwaarden MA, Ledeboer M, Jansman FG, ter Borg F. Gastrointest Endosc. 2012 Apr;75(4):835-40. Source Department of Gastroenterology, Deventer Hospital, Deventer, The Netherlands. Abstract Zie Maag Darm Leverziekten Inventarisatie van potentieel geneesmiddelgerelateerde problemen bij oncologiepatiënten (ONCOMIND) Bulsink A, Boor SD, Imholz ALT, Brouwers JRBJ, Jansman FGA PW Wetenschappelijk Platform 2012;6:85-8. Abstract OBJECTIVE: To evaluate the occurrence of potential drug-related problems (pDRPs) among oncology patients. DESIGN AND METHODS: A prospective, longitudinal observational study was carried out from March 2010 through March 2011 at the Deventer Teaching Hospital, Deventer, The Netherlands. All patients older than 18 years, receiving anticancer drugs prescribed by an internal medicine-oncologist or a pulmonologist-oncologist, were included. pDRPs were identified using screening methods according to Dutch guidelines. RESULTS: Among 546 patients with cancer, 760 oncology-related pDRPs were identified. These were mainly drug interactions (246 in 157 patients) and potential contraindications (201 in 143 patients). Most oncology-related interactions could be attributed to NSAIDs (40%) and vitamin K antagonists (23%) in combination with one or more anticancer drugs or oncology-related supportive care, and were classified as having minor (50%) and moderate (48%) interaction severity levels. Analysis of patient-verified medication lists, supplementary to analysis of drug dispensing history records (DDHRs), led to identification of 20 additional oncologyrelated interactions compared to 95 oncology-related interactions with DDHR alone. Patient interview supplementary to analysis of patient-verified medication list combined with DDHR led to identification of 1 additional oncology-related interaction. CONCLUSION: Most identified pDRPs in cancer patients were interactions and potential contraindications. Most frequently occurring oncologyrelated interactions had minor or moderate severity and their clinical relevance was limited due to non-chronic use, simultaneous use of preventive drugs to reduce the risk of harmful effects (proton pump inhibitors), or therapeutic monitoring of laboratory parameters.Patient involvement in verifying medication list did lead to identification of differences in usages but not to identification of additional pDRPs. A randomised trial of honey barrier cream versus zinc oxide ointment. Nijhuis WA, Houwing RH, Van der Zwet WC, Jansman FG. Br J Nurs. 2012 Nov 8-21;21(20):9-10, 12-3. Author information Ziekenhis Gelderse Vallei Ede, University Groningen, Department of Pharmacotherapy and Pharmaceutical Care, Groningen, The Netherlands. Abstract : zie Dermatologie Wetenschappelijk overzicht 2012 - 2013 Pleconaril revisited: clinical course of chronic enteroviral meningoencephalitis after treatment correlates with in vitro susceptibility. Wildenbeest JG, van den Broek PJ, Benschop KS, Koen G, Wierenga PC, Vossen AC, Kuijpers TW, Wolthers KC. Antivir Ther. 2012;17(3):459-66. 144 145 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Ziekenhuisfarmacie Association between acute geriatric syndromes and medicationrelated hospital admissions. Wierenga PC, Buurman BM, Parlevliet JL, van Munster BC, Smorenburg SM, Inouye SK, de Rooij SE. Drugs Aging. 2012 Aug 1;29(8):691-9. Author information Department of Clinical Pharmacy, Academic Medical Center, Amsterdam, the Netherlands. Abstract BACKGROUND: Elderly patients are at a 4-fold higher risk of adverse drug events (ADEs) and drug-related hospitalization. Hospitalization of an elderly patient is often preceded by geriatric syndromes, like falls or delirium. OBJECTIVES: The primary aim of this study was to investigate whether geriatric syndromes were associated with ADEs in acutely admitted elderly patients. METHODS: Consecutive medical patients, aged 65 years or more, who were acutely admitted, were enrolled. An initial multidisciplinary evaluation was completed and baseline characteristics were collected. A fall before admission was retrieved from medical charts. Delirium was determined by the Confusion Assessment Method. RESULTS: A total of 641 patients were included. Over 25% had an ADE present at admission, 26% presented with delirium and 12% with a fall. Delirium was associated with the use of antidepressants, antipsychotics and antiepileptics. In all ADEs (n = 167), ADEs were associated with a fall, with non-steroidal anti-inflammatory drugs or diuretics, but not with pre-existing functioning, delirium or older age. For ADEs involving psychoactive medication (n = 35), an association was found between delirium, falls, opioids and antipsychotics in bivariate analyses. A fall just before hospitalization (odds ratio [OR] 3.69 [95% CI 1.41, 9.67]), antipsychotics (OR 3.70 [95% CI 1.19, 11.60]) and opioids (OR 14.57 [95% CI 2.02, 105.30]) remained independently associated with an ADE involving psychoactive medication. CONCLUSION: This prospective study demonstrated that, in a cohort of elderly hospital patients, a fall before admission and prevalent delirium are associated with several pharmacological groups and/or with ADE-related hospital admission. Author information Department of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children’s Hospital, Academic Medical Center, Amsterdam, The Netherlands. Abstract BACKGROUND: Human enteroviruses (HEVs) can cause severe infections, especially in patients with a deficient humoral immune response, such as X-linked agammaglobulinemia. In this patient group, chronic enteroviral meningitis (CEMA) is feared because of extensive morbidity and high fatality rate. Treatment options consist of intravenous immunoglobulin (IVIG), with various outcomes. Pleconaril is an antiviral agent with in vitro activity against HEVs that has been used in the treatment of HEV infections. METHODS: The efficacy of pleconaril and IVIG against HEV isolated from the patients was assessed in vitro in two patients with CEMA. RESULTS: Echovirus 11 was found in the cerebrospinal fluid (CSF) of case 1. Treatment with high-dose IVIG and pleconaril did not provide any clinical improvement and HEV PCR in CSF remained positive. Case 2 (echovirus 13 positive in CSF) was also treated with IVIG and pleconaril. The patient recovered completely and HEV PCR in CSF became negative. Recent IVIG batches contained low titres of neutralizing antibodies against the patient strains. Echovirus 11 (case 1) was resistant to pleconaril in vitro, whereas echovirus 13 (case 2) was susceptible, in accordance with virological response after treatment and subsequent clinical results. CONCLUSIONS: This is the first report that evaluates efficacy of antiviral treatment in CEMA patients in relation to in vitro susceptibility of clinical virus isolates. Since pleconaril is no longer available for compassionate use we strongly propagate that new drugs should be developed against these potential life threatening HEV infections. Abstract PURPOSE: Drug-drug interactions (DDIs) may compromise patient safety. However, there are no good estimates of their frequency or understanding of their nature in the intensive care unit (ICU). The objective of this study was to determine the frequency and nature of potential DDIs (pDDIs) in the ICU when assessed in light of documented and perceived clinical relevance. METHODS: We developed a computerized algorithm to identify pDDI occurrence in ICU admissions with medication administration, on the basis of the Dutch national drug database. A panel of nine local pharmacists and intensivists completed questionnaires to classify the perceived relevance of the identified pDDI types for the ICU. A focus group discussed the conflicting classifications of relevance to reach consensus. For the pDDI types classified as relevant, we calculated their number and frequency per admission days. RESULTS: Out of 9644 admissions, 3892 had at least one pDDI. The pDDIs corresponded to 85 types, 36 of which were deemed relevant on the basis of the survey and focus group. These 36 types corresponded to 16,122 pDDIs (rate: 33.6 per 100 admission days) and 1084 unique admissions. PDDIs occurred in 11% of admissions to the general ICU, after limiting analysis to severe and relevant DDI types. The most frequently encountered drug classes were antithrombotic agents and antibacterials for systemic use. CONCLUSIONS: There are many potential DDIs with high perceived relevance in the ICU that appear to require attention and follow-up. Computerized decision support may help reduce the number of pDDIs but needs to be tailored to the environment in which it operates. Geen quetiapine bij slaapstoornissen. Lineke M. Tak, Inge R.F. van Berlo-van de Laar, Bennard Doornbos Ned Tijdschr Geneeskd. 2013;157:A5740. Ziekenhuisfarmacie Frequency and nature of drug-drug interactions in the intensive care unit. Askari M, Eslami S, Louws M, Wierenga PC, Dongelmans DA, Kuiper RA, Abu-Hanna A. Pharmacoepidemiol Drug Saf. 2013 Apr;22(4):430-7. Author information Department of Medical Informatics, Academic Medical Center, Amsterdam, the Netherlands. Wetenschappelijk overzicht 2012 - 2013 146 147 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Recognition of adverse drug events in older hospitalized medical patients. Klopotowska JE, Wierenga PC, Smorenburg SM, Stuijt CC, Arisz L, Kuks PF, Dijkgraaf MG, Lie-A-Huen L, de Rooij SE; WINGS study group. Eur J Clin Pharmacol. 2013 Jan;69(1):75-85. Author information Department of Hospital Pharmacy, Academic Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands. Abstract OBJECTIVE: To assess medical teams’ ability to recognize adverse drug events (ADEs) in older inpatients. METHODS: The study cohort comprised 250 patients aged 65 years or older consecutively admitted to Internal Medicine wards of three hospitals in the Netherlands between April and November 2007. An independent expert team identified ADEs present upon admission or occurring during hospitalization by a structured retrospective patient chart review. For all ADEs identified, the expert team assessed causality, severity, preventability, and recognition by medical teams. RESULTS: The medical teams did not recognize 19.9 % of all ADEs present upon admission {60.4 ADEs [95 % confidence interval (CI) 51.5-70.8] per 100 hospitalizations} and 20.3 % of all ADEs occurring during the hospital stay [47.2 ADEs (95 % CI 39.4-56.5) per 100 hospitalizations]. Unrecognized ADEs were significantly more often ADEs with possible causality (p=0.014, df=1), ADEs caused by medication errors (p<0.001, df=1), and ADEs not manifesting as new symptoms (p<0.001, df=1). The medical teams did not recognize 23.2 % of mild to moderately severe ADEs and 16.5 % of severe, life-threatening, or fatal ADEs. The recognition of ADEs varied with event type. CONCLUSIONS: The recognition of ADEs by medical teams was substantial for those ADEs with evident causality and with clinically apparent and severe consequences. ADEs mimicking underlying pathologies with a lower severity went unrecognized much more often, as did those resulting only in abnormal laboratory values. Tools to improve the recognition of ADEs by medical teams should, therefore, focus on those ADEs that are more challenging to detect. resembling underlaying pathologies or with lower severity went unrecognized much more often. Tools to improve recognition of ADEs by medical teams should, therefore, focus on those ADEs more challenging to detect. Adverse drug events in older hospitalized patients: results and reliability of a comprehensive and structured indentification strategy. Klopotowska JE, Wierenga PC, Smorenburg SM, Stuijt CCM, Arisz L, Kuks PFM, Dijkgraaf MGW, Lie-A-Huen L, De Rooij SE PW Wetenschappelijk Platform 2013;7(2):a1305. Abstract OBJECTIVE: To assess medical teams’ ability to recognize adverse drug events (ADEs) in elderly inpatients. Design: Prospective cohort study METHODS: From April till November 2007, 250 patients aged 65 years or older, consecutively admitted to Internal Medicine wards of three hospitals in the Netherlands, were included in the study. An independent expert panel, consisting of a pharmacist and an internist, identified ADEs present upon admission or occurring during hospitalization by a structured retrospective patient chart review. For all ADEs identified, the experts assessed causality, severity, preventability, and recognition by medical teams. RESULTS: The medical teams did not recognize 20% of 151 ADEs present upon admission, and 20% of 118 ADEs occurring during hospital stay. Unrecognized ADEs were more often ‘possible’ ADEs (p = 0.014; df = 1), ADEs caused by medication errors (P < 0.001; df = 1) and ADEs not manifesting as new symptoms (P < 0.001; df = 1). When only severe, life-threatening or fatal ADEs were taken into account, the total percentage of unrecognized ADEs decreased from 20% to 8%. The recognitions of ADEs also varied with event type. CONCLUSION: The recognition of ADEs was substantial for ADEs with evident causality or with clinically apparent or severe consequences. ADEs Wetenschappelijk overzicht 2012 - 2013 148 149 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Ziekenhuisfarmacie Adverse drug events in older hospitalized patients: results and reliability of a comprehensive and structured identification strategy. Klopotowska JE, Wierenga PC, Stuijt CC, Arisz L, Dijkgraaf MG, Kuks PF, Asscheman H, de Rooij SE, Lie-A-Huen L, Smorenburg SM; WINGS Study Group. PLoS One. 2013 Aug 5;8(8):e71045. Author information Department of Hospital Pharmacy, Academic Medical Center, Amsterdam, the Netherlands. Abstract BACKGROUND: Older patients are at high risk for experiencing Adverse Drug Events (ADEs) during hospitalization. To be able to reduce ADEs in these vulnerable patients, hospitals first need to measure the occurrence of ADEs, especially those that are preventable. However, data on preventable ADEs (pADEs) occurring during hospitalization in older patients are scarce, and no ‘gold standard’ for the identification of ADEs exists. METHODOLOGY: The study was conducted in three hospitals in the Netherlands in 2007. ADEs were retrospectively identified by a team of experts using a comprehensive and structured patient chart review (PCR) combined with a trigger-tool as an aid. This ADE identification strategy was applied to a cohort of 250 older hospitalized patients. To estimate the intra- and interrater reliabilities, Cohen’s kappa values were calculated. PRINCIPAL FINDINGS: In total, 118 ADEs were detected which occurred in 62 patients. This ADE yield was 1.1 to 2.7 times higher in comparison to other ADE studies in older hospitalized patients. Of the 118 ADEs, 83 (70.3%) were pADEs; 51 pADEs (43.2% of all ADEs identified) caused serious patient harm. Patient harm caused by ADEs resulted in various events. The overall intra-rater agreement of the developed strategy was substantial (κ = 0.74); the overall inter-rater agreement was only fair (κ = 0.24). CONCLUSIONS/SIGNIFICANCE: The ADE identification strategy provided a detailed insight into the scope of ADEs occurring in older hospitalized patients, and showed that the majority of (serious) ADEs can be prevented. Several strategy related aspects, as well as setting/study specific aspects, may have contributed to the results gained. These aspects should be considered whenever ADE measurements need to be conducted. The results regarding pADEs can be used to design tailored interventions to effectively reduce harm caused by medication errors. Improvement of the inter-rater reliability of a PCR remains challenging. Characteristics of potential drug-related problems among oncology patients. Bulsink A, Imholz AL, Brouwers JR, Jansman FG Int J Clin Pharm. 2013 Jun;35(3):401-7. Author information Department of Clinical Pharmacy (E3.019), Deventer Hospital, PO-Box 5001, 7400 GC Deventer, The Netherlands. Abstract BACKGROUND: Oncology patients are more at risk for drug related problems because of treatment with (combinations of) anticancer drugs, as they have a higher risk for organ failure or altered metabolism with progression of their disease. OBJECTIVE: The aim of this study was to characterize and to evaluate the frequency of potential drug related problems (pDRPs) among oncology patients. SETTING: Outpatient- and day-care centres for Internal and Pulmonary Medicine at the Deventer Hospital, Deventer, The Netherlands. METHOD: A prospective, descriptive, observational study was carried out from March 2010 to March 2011 at the Deventer Hospital, Deventer, The Netherlands. All patients older than 18 years receiving anticancer drugs prescribed by an internal medicineoncologist or pulmonologist-oncologist were included. MAIN OUTCOME MEASURE: The primary outcome was the number and type of pDRPs according to Dutch guidelines. RESULTS: Among 546 patients with cancer, 952 pDRPs were identified, of which 474 were oncology-related. These were mainly drug interactions (IA) (246 IA in 157 patients) and potential contraindications (pCI) (201 pCI in 143 patients). CONCLUSION: Most identified pDRPs in cancer patients were IAs and pCIs and involved corticosteroids. The most frequently occurring oncology-related IAs were classified as minor or moderate levels of severity. latory cancer patients on oral anticancer treatment. METHODS: A search was conducted in a computer-based medication prescription system for dispensing oral anticancer drugs to outpatients in three Dutch centres. Potential drug-drug interactions were identified using electronic (Drug Interaction Fact software) and manual screening methods (peerreviewed reports). RESULTS: In the 898 patients included in the study, 1359 PDDIs were identified in 426 patients (46%, 95% confidence interval (CI)=42-50%). In 143 patients (16%), a major PDDI was identified. The drug classes most frequently involved in a major PDDI were coumarins and opioids. The majority of cases concerned central nervous system interactions, PDDIs that can cause gastrointestinal toxicity and prolongation of QT intervals. In multivariate analysis, concomitant use of more drugs (odds ratio (OR)=1.66, 95% CI=1.54-1.78, P<0001) and genito-urinary cancer (OR=0.25, 95% CI=0.12-0.52, P<0001) were risk factors. CONCLUSION: Potential drug-drug interactions are very common among cancer patients on oral cancer therapy. Physicians and pharmacists should be more aware of these potential interactions. Voordrachten Doseren van cytostatica. Jansman FGA PUOZ : Doseren van geneesmiddelen bij obese patiënten Utrecht, 19 maart 2012 Medicatiebewaking in de oncologie. Jansman FGA Nederlandse Ziekenhuisfarmaciedagen 2012 Nunspeet, 10 mei 2012 Wetenschappelijk overzicht 2012 - 2013 Farmacogenetica in de neurologie en oncologie. Jansman FGA Neurologie en Oncologie: Dilemma’s op het raakvlak van twee disciplines Garderen, 22 juni 2012 Drug interactions in cancer patients treated with oral anti-cancer drugs. Van Leeuwen RWF, Brundel DHS, Neef C, Mathijssen RHJ, Van Gelder T, Burger DM, Jansman FGA ESMO Congress 2012 Wenen, 28 september 2012 150 151 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Ziekenhuisfarmacie Prevalence of potential drug-drug interactions in cancer patients treated with oral anticancer drugs. van Leeuwen RW, Brundel DH, Neef C, van Gelder T, Mathijssen RH, Burger DM, Jansman FG. Br J Cancer. 2013 Mar 19;108(5):1071-8. Author information Department of Pharmacy, Erasmus University Medical Center, Rotterdam 3015CE, The Netherlands. Abstract BACKGROUND: Potential drug-drug interactions (PDDIs) in patients with cancer are common, but have not previously been quantified for oral anticancer treatment. We assessed the prevalence and seriousness of potential PDDIs among ambu- Hyoscine N-butylbromide does not improve polyp detection during colonoscopy: a double-blind, randomized, placebo-controlled, clinical trial. De Brouwer EJ, Arbouw ME, Van der Zwet WC, Van Herwaarden MA, Ledeboer M, Jansman FGA, Ter Borg F Digestive Disease Week San Diego, 19 oktober 2013 Posters Metformin elimination by haemodialysis versus continuous venovenous haemofiltration in renal failure patients with metformin associated lactic acidosis. Bulsink A, Vermeij CG, Doorenbos CJ, van Berlo-van de Laar IRF Nederlandse Ziekenhuisfarmaciedagen Nunspeet, 11 mei 2012 Bloedspiegelbepalingen: nuttig of onzin? Van Berlo IRF Farmacotherapie symposium Dimence: Anders dan Anders Deventer, 26 november 2013 Analysis of medication reconciliation at discharge from a Dutch hospital. van Berlo-van de Laar IRF, Merkx MM, Jansman FGA Nederlandse Ziekenhuisfarmaciedagen Nunspeet, 10 mei 2012 Medicatieveiligheid en farmaceutische patiëntenzorg bij patiënten met orale oncolytica. Jansman FGA Nederlandse Vereniging voor Poliklinische Farmacie Symposium Oncologie Utrecht, 16 april 2013 Promotie Interactiebewaking en andere medicatiebegeleiding van (orale) oncolytica. Jansman FGA PAO Farmacotherapie Uptodate Groningen, 6 november 2013 Ziekenhuisfarmacie Prevalence of potential drug-drug interactions in cancer patients treated with oral anticancer drugs. Van Leeuwen RWF, Brundel DHS, Neef C, Mathijssen RHJ, Van Gelder T, Burger DM, Jansman FGA Mededelingendag Nederlandse Vereniging voor Klinische Farmacologie en Biofarmacie Utrecht, 26 maart 2013 Wetenschappelijk overzicht 2012 - 2013 152 153 Wetenschappelijk overzicht 2012 - 2013 Ziekenhuisfarmacie Development and application of measurement methods focusing on medication related problems in elderly hospitalised patients. Wierenga PC. Universiteit van Amsterdam Amsterdam, 8 november 2013 Samenvatting In conclusion, elderly hospitalised patients form a patient group that is at higher risk for medication related problems compared to younger patients. In order to measure medication related problems in hospitalised elderly and to ultimately improve their pharmaceutical care we examined three possible levels of measurement one can choose. These three levels of focus (systems, process, and outcome level) were practiced in three measurement methods. As a starting point in an improvement trajectory a systems approach using the prospective risk analysis method with the Bow-Tie model is recommended. For periodical quality of care measurement and less resource intensive research it is best to use explicit process measures like our QIs (or the original ACOVE QIs). For research in which resources and time are not scarce and measuring actual patient harm is of importance, the ADE measurement method of our WINGS study is the best choice. Whereas explicit process measures, like our indicators, facilitate comparison of results of other studies using the same or comparable indicators, results of studies reporting ADEs should be compared with utmost caution. Based on the results from all three measurement methods in this thesis it can, however, be concluded that the quality of pharmaceutical care for elderly patients is still poor and needs improvement. Pre- en post-analytisch advies. Jansman FGA 2e Lage Landen Symposium Intoxicaties Gent, 13 september 2013 Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Ziekenhuishygiëne Posters Dragerschap van Extended-Spectrum Beta-Lactamases (ESBL’s) bij hemodialysepatienten: retrospectief onderzoek naar het nut van routinematige screening naar ESBL-dragerschap en contactisolatie tijdens dialyseren. Oosterwijk PR, Bergervoet PHM, Van der Zwet WC, Sluiter HE Wetenschapsavond Deventer Ziekenhuis Deventer, 1 november 2012 Ziekenhuishygiëne Wetenschappelijk overzicht 2012 - 2013 154 Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Five-year quality of life of endometrial cancer patients treated in the randomised Post Operative Radiation Therapy in Endometrial Cancer (PORTEC-2) trial and comparison with norm data. Nout RA, Putter H, Jürgenliemk-Schulz IM, Jobsen JJ, Lutgens LC, van der Steen-Banasik EM, Mens JW, Slot A, Stenfert Kroese MC, Nijman HW, van de Poll-Franse LV, Creutzberg CL. Eur J Cancer. 2012 Jul;48(11):1638-48. Abstract BACKGROUND: The PORTEC-2 trial showed efficacy and reduced sideeffects of vaginal brachytherapy (VBT) compared with external beam pelvic radiotherapy (EBRT) for patients with high-intermediate risk endometrial cancer. The current analysis was done to evaluate long-term health related quality of life (HRQL), and compare HRQL of patients to an age-matched norm population. METHODS: Patients were randomly allocated to EBRT (n=214) or VBT (n=213). HRQL was assessed using EORTC QLQ-C30 and subscales from PR25 and OV28 (bladder, bowel, sexual symptoms); and compared to norm data. FINDINGS: Median follow-up was 65 months; 348 (81%) patients were evaluable for HRQL (EBRT n=166, VBT n=182). At baseline, patient functioning was at lowest level, increasing during and after radiotherapy to reach a plateau after 12 months, within range of scores of the norm population. VBT patients reported better social functioning (p=0.005) and lower symptom scores for diarrhoea, faecal leakage, need to stay close to a toilet and limitation in daily activities due to bowel symptoms (p⩽0.001), compared to EBRT. There were no differences in sexual functioning or symptoms between the treatment groups; however, sexual functioning was lower and sexual symptoms more frequent in both treatment groups compared to the norm population. INTERPRETATION: Patients who received EBRT reported clinically relevant higher levels of bowel symptoms and related limitations in daily activities with lower social functioning, 5 years after treatment. VBT provides a better HRQL, which remained similar to that of an age-matched norm population, except for sexual symptoms which were more frequent in both treatment groups. Relocatable fixation systems in intracranial stereotactic radiotherapy : Accuracy of serial CT scans and patient acceptance in a randomized design. Theelen A, Martens J, Bosmans G, Houben R, Jager JJ, Rutten I, Lambin P, Minken AW, Baumert BG. Strahlenther Onkol. 2012 Jan;188(1):84-90. Abstract PURPOSE: The goal was to provide a quantitative evaluation of the accuracy of three different fixation systems for stereotactic radiotherapy and to evaluate patients’ acceptance for all fixations. METHODS: A total of 16 consecutive patients with brain tumours undergoing fractionated stereotactic radiotherapy (SCRT) were enrolled after informed consent (Clinical trials.gov: NCT00181350). Fixation systems evaluated were the BrainLAB® mask, with and without custom made bite-block (fixations S and A) and a homemade neck support with bite-block (fixation B) based on the BrainLAB® frame. The sequence of measurements was evaluated in a randomized manner with a cross-over design and patients’ acceptance by a questionnaire. RESULTS: The mean three-dimensional (3D) displacement and standard Fractionated stereotactic radiotherapy for uveal melanoma, late clinical results. Muller K, Naus N, Nowak PJ, Schmitz PI, de Pan C, van Santen CA, Marijnissen JP, Paridaens DA, Levendag PC, Luyten GP. Radiother Oncol. 2012 Feb;102(2):219-24. Wetenschappelijk overzicht 2012 - 2013 156 157 Wetenschappelijk overzicht 2012 - 2013 Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Abstract PURPOSE: To determine local control, late toxicity and metastatic free survival (MFS) of patients treated with fractionated stereotactic radiation therapy (fSRT) for uveal melanoma (UM). METHODS AND MATERIALS: Between 1999 and 2007, 102 UM patients were included in a prospective study of a single institution (median follow-up (FU) 32months; median tumor thickness 6mm); five fractions of 10Gy were given. Primary endpoints were local tumor control and late toxicity (including visual outcome and eye preservation). Secondary endpoint was MFS. RESULTS: Local tumor control was achieved in 96% of the patients. Fifteen enucleations were performed, 2-85months after radiation. Four eyes were enucleated because of local tumor progression. Nine patients developed grade 3 or 4 neovascular glaucoma (NVG), 19 developed severe retinopathy, 13 developed opticoneuropathy grade 3 or 4, 10 developed cataract grade 3, and 10 patients suffered from keratitis sicca. Best corrected visual acuity (BCVA) decreased from a mean of 0.26 at diagnosis to 0.16, 3months after radiation and it gradually declined to 0.03, 4years after therapy. The 5-year actuarial MFS was 75% (95% CIs: 62-84%). CONCLUSIONS: fSRT is an effective treatment modality for uveal melanoma with a good local control. With that, fSRT is a serious eye sparing treatment modality. However, our FU is relatively short. Also, the number of secondary enucleations is substantial, mainly caused by NVG. Publicaties deviations were 1.16 ± 0.68 mm for fixation S, 1.92 ± 1.28 and 1.70 ± 0.83 mm for fixations A and B, respectively. There was a significant improvement of the overall alignment (3D vector) when using the standard fixation instead of fixation A or B in the craniocaudal direction (p = 0.037). Rotational deviations were significantly less for the standard fixation S in relation to fixations A (p = 0.005) and B (p = 0.03). EPI imaging with off-line correction further improved reproducibility. Five out of 8 patients preferred the neck support with the bite-block. CONCLUSION: The mask fixation system in conjunction with a bite-block is the most accurate fixation for SCRT reducing craniocaudal and rotational movements. Patients favoured the more comfortable but less accurate neck support. To optimize the accuracy of SCRT, additional regular portal imaging is warranted. Evaluation of the adherence to follow-up care guidelines for women with breast cancer. Grandjean I, Kwast AB, de Vries H, Klaase J, Schoevers WJ, Siesling S. Eur J Oncol Nurs. 2012 Jul;16(3):281-5. Abstract PURPOSE: To evaluate adherence with follow-up criteria as suggested by the national guideline for breast cancer patients. METHOD: Patients diagnosed with breast cancer in 2003 in two hospitals were identified from the Netherlands Cancer Registry (n = 198). Compliance with the guideline was assessed retrospectively by extracting follow-up care data from patient files for a period of five years. RESULTS: Follow-up data were available for 196 patients. In the first year of follow-up, fewer consultations were performed compared to guideline standards. In the second through the fifth year of follow-up, more consultations were performed, with nearly double the number of consultations in the third until the fifth year compared to the guideline (p < 0.05). This excess usage was mainly associated with the fact that women had received radiotherapy (p < 0.01). Physical examinations were performed during 97 percent of consultations. Mammograms were performed slightly less often than suggested. CONCLUSIONS: Among women receiving follow-up care after breast cancer, more consultations were provided compared to the guideline recommendations. Mammograms were performed slightly less often than recommended. With regard to the performance of physical examinations, the guideline was followed. A quality assurance tool for helical tomotherapy using a step-wedge phantom and the on-board MVCT detector. Althof V, van Haaren P, Westendorp R, Nuver T, Kramer D, Ikink M, Bel A, Minken A. J Appl Clin Med Phys. 2012 Jan 5;13(1):3585. Author information Radiotherapeutic Institute RISO, Deventer, The Netherlands. Abstract The purpose of this study was to develop and evaluate filmless quality assurance (QA) tools for helical tomotherapy by using the signals from the on-board megavoltage computed tomography (MVCT) detector and applying a dedicated step-wedge phantom. The step-wedge phantom is a 15 cm long step-like aluminum block positioned on the couch. The phantom was moved through the slit beam and MVCT detector signals were analyzed. Two QA Objective automated assessment of time trends in prostate edema after (125)I implantation. Westendorp H, Kattevilder R, Riet van ‘t A, Minken AW, Nuver TT, Immerzeel JJ, Hoekstra CJ. Brachytherapy. 2012 Sep-Oct;11(5):327-33. Wetenschappelijk overzicht 2012 - 2013 158 159 Wetenschappelijk overzicht 2012 - 2013 Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Source Department of Medical Physics, Radiotherapeutic Institute RISO, Deventer, The Netherlands. Abstract PURPOSE: To present an objective automated method to determine time trends in prostatic edema resulting from iodine-125 brachytherapy. METHODS AND MATERIALS: We followed 20 patients, implanted with stranded seeds, with seven consecutive CT scans to establish a time trend in prostate edema. Seed positions were obtained automatically from the CT series. The change in seed positions was used as surrogate for edema. Two approaches were applied to model changes in volume. (1) A cylindrical model: seeds from the compared distribution were linked to the reference distribution of Day 28. After alignment, the compared distribution was scaled in cylindrical coordinates, leading to the changes in radial and craniocaudal directions. The volume changes were calculated using these scaling factors. (2) A spherical model: distances of seeds to the center of gravity of all seeds were used as a measure to model volume changes. RESULTS: With Day 28 as reference, the observed volume changes were smaller than 18% ± 6% (1 standard deviation) for the cylindrical model and 12% ± 7% for the spherical model. One day after implantation, the implanted prostate was less than 10% larger than in the reference scan for both models. Apart from Day 0, both models showed similar volume changes. CONCLUSIONS: We present an objective automated method to determine changes in the implanted prostate volume, eliminating the influence of an observer in the assessment of the prostate size. The implanted volume change was less than 18% ± 7% for the studied group of 20 patients. Edema was 9% ± 5% from 1 day after implantation onward. Abstract BACKGROUND: Several French, Belgian and Dutch radiation oncologists have reported good results with the combination of limited surgery after external beam radiotherapy (EBRT) followed by brachytherapy in early-stage muscle-invasive bladder cancer. PATIENTS AND METHODS: Data from 12 of 13 departments which are using this approach have been collected retrospectively, in a multicenter database, resulting in 1040 patients: 811 males and 229 females with a median age of 66 years, range 28-92 years. Results were analyzed according to tumor stage and diameter, histology grade, age and brachytherapy technique, continuous low-dose rate (CLDR) and pulsed dose rate (PDR). RESULTS: At 1, 3 and 5 years, the local recurrence-free probability was 91%, 80% and 75%, metastasis-free probability was 91%, 80% and 74%, diseasefree probability was 85%, 68% and 61% and overall survival probability was 91%, 74% and 62%, respectively. The differences in the outcome between the contributing departments were small. After multivariate analysis, the only factor influencing the local control rate was the brachytherapy technique. Toxicity consisted mainly of 24 fistula, 144 ulcers/necroses and 93 other types. CONCLUSIONS: EBRT followed by brachytherapy, combined with limited surgery, offers excellent results in terms of bladder sparing for selected groups of patients suffering from bladder cancer. High-dose-rate prostate brachytherapy based on registered transrectal ultrasound and in-room cone-beam CT images. Even AJ, Nuver TT, Westendorp H, Hoekstra CJ, Slump CH, Minken AW Brachytherapy. 2013 Sep 13. pii: S1538-4721(13)00310-3. Author information Department of Medical Physics, Radiotherapeutic Institute RISO, Deventer, The Netherlands; MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands. Abstract PURPOSE: To present a high-dose-rate (HDR) brachytherapy procedure for prostate cancer using transrectal ultrasound (TRUS) to contour the regions of interest and registered in-room cone-beam CT (CBCT) images for needle reconstruction. To characterize the registration uncertainties between the two imaging modalities and explore the possibility of performing the procedure solely on TRUS. METHODS AND MATERIALS: Patients were treated with a TRUS/CBCTbased HDR brachytherapy procedure. For 100 patients, dosimetric results were analyzed. For 40 patients, registration uncertainties were examined by determining differences in fiducial marker positions on TRUS and registered CBCT. The accuracy of needle reconstruction on TRUS was investigated by Brachytherapy after external beam radiotherapy and limited surgery preserves bladders for patients with solitary pT1-pT3 bladder tumors. Koning CC, Blank LE, Koedooder C, van Os RM, van de Kar M, Jansen E, Battermann JJ, Beijert M, Gernaat C, van Herpen KA, Hoekstra C, Horenblas S, Jobsen JJ, Krol AD, Lybeert ML, van Onna IE, Pelger RC, Poortmans P, Pos FJ, van der Steen-Banasik E, Slot A, Visser A, Pieters BR. Ann Oncol. 2012 Nov;23(11):2948-53. Author information Department of Radiation Oncology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands. Wetenschappelijk overzicht 2012 - 2013 160 161 Wetenschappelijk overzicht 2012 - 2013 Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) procedures were developed, with gantry fixed at 0°: 1) step-wedge procedure: to check beam energy consistency, field width, laser alignment with respect to the virtual isocenter, couch movement, and couch velocity; and 2) completion procedure: to check the accuracy of a field abutment made by the tomotherapy system after a treatment interruption. The procedures were designed as constancy tool and were validated by measurement of deliberately induced variations and comparison with a reference method. Two Hi-Art II machines were monitored over a period of three years using the step-wedge procedures. The data acquisition takes 5 minutes. The analysis is fully automated and results are available directly after acquisition. Couch speed deviations up to 2% were induced. The mean absolute difference between expected and measured couch speed was 0.2% ± 0.2% (1 standard deviation SD). Field width was varied around the 10 mm nominal size, between 9.7 and 11.1 mm, in steps of 0.2 mm. Mean difference between the step-wedge analysis and the reference method was &lt; 0.01 mm ± 0.03 mm (1 SD). Laser (mis)alignment relative to a reference situation was detected with 0.3 mm precision (1SD). The step-wedge profile was fitted to a PDD in water. The PDD ratio D20/D10, measured at depths of 20 cm and 10 cm, was used to check beam energy consistency. Beam energy variations were induced. Mean difference between step-wedge and water PDD ratios was 0.2% ± 0.3% (1SD). The completion procedure was able to reveal abutment mismatches with a mean error of -0.6 mm ± 0.2 mm (1SD). The trending data over a period of three years showed a mean deviation of 0.4% ± 0.1% (1 SD) in couch speed. The spread in field width was 0.15 mm (1 SD). The sagittal and transverse lasers showed a variation of 0.5 mm (1 SD). Beam energy varied 1.0% (1 SD). A mean abutment mismatch was found of -0.4 mm ± 0.2 mm (1 SD) between interrupted treatments. The on-board MVCT detector, in combination with the step-wedge phantom, is a suitable tool for a QA program for helical tomotherapy. The method allowed frequent monitoring of machine behavior for the past three years. Intrafractional shifts during stereotactic body radiation therapy of hepatic metastases. Jacobs J, Niehoff I, Minken AWH, Westendorp H, Ruiter de Q, Muller K ESTRO Forum Geneve, 19-23 april 2013 determining the position differences of needle tips on TRUS and CBCT. The dosimetric impact of reregistration and needle reconstruction on TRUS only was studied for 8 patients. RESULTS: The average prostate V100 was 97.8%, urethra D10 was 116.3%, and rectum D1 cc was 66.4% of the prescribed dose. For 85% of the patients, registration inaccuracies were within 3 mm. Large differences were found between needle tips on TRUS and CBCT, especially in cranial-caudal direction, with a maximum of 10.4 mm. Reregistration resulted in a maximum V100 reduction of 0.9%, whereas needle reconstruction on TRUS only gave a maximum reduction of 9.4%. CONCLUSIONS: HDR prostate brachytherapy based on TRUS combined with CBCT is an accurate method. Registration uncertainties, and consequently dosimetric inaccuracies, are small compared with the uncertainties of performing the procedure solely based on static TRUS images. CBCT imaging is a requisite in our current procedure. Dutch radiotherapy lung audit: Results of a national pilot. Belderbos J, Henneman D, Verhoef C, Ploegmakers M, Bussink J, TissingTan C, Vonk E, Wel Van Der A, Verheij M, Dekker A 15th World Conference on Lung Cancer Sydney, Australia, 27-21 oktober 2013 Posters Voordrachten Intraoperative dynamic planning and optimization as a routine procedure for 1-125 prostate implants. Kattevilder R, Westendorp R, Hoekstra C, Immerzeel J. Pol van de S, Nuver T, Minken A 17th ISRRT World Congress and the 70th CAMRT Annual General Conference Toronto, 7-10 juni 2012 The additional value of MR imaging in radiation therapy treatment planning of men with localized prostate cancer. Grootjans W, Hoekstra CJM, Pol van de SMG, Westendorp R, Minken AWH ESTRO Barcelona, mei 2012 CBCT guided intra-operative dynamic dosimetry significantly improves dosimetry for I1 25 prostate brachytherapy. Westendorp R, Kattevilder R, Hoekstra C, Immerzeel J, Pol van de S, Nuver T, Minken A World Brachytherapy Congress Barcelona, mei 2012 MVCT-detector based dosimetry replaces phantom measurements for tomotherapy prostate treatments. Nuver T, Kramer D, Althof V, Westendorp R, Minken A ASTRO Boston, sept-okt 2012 First experience with IMRT treatment plans created with RayStation. Minken A, Kramer D, Ikink-Wispelweij M, Hilgers G, Westendorp R, Nuver T ASTRO Boston, sept-okt 2012 Chemotheradiation versus radiotherapy in postoperative cervical cancer patients with poor prognostic factors: A retrospective Dutch multicentre study. Van der Steen-Banasik E, Nout R, Jobsen J, Mens JW, Beukema J, Schultz-Jurgelink I, Slot A, Snijers A, Van de Berg H, Timmer P, Van de Pol S, Ottevanger N, Van der Palen J 14th Biennial Meeting of the International Gynecologic Cancer Society (IGCS) Wetenschappelijk overzicht 2012 - 2013 No additional value of MRI to ultrasound imaging in external beam radiation treatment planning of localized prostate cancer. Grootjans W, Hoekstra CJM, Pol van de SMG, Westendorp R, Minken AWH 162 163 Wetenschappelijk overzicht 2012 - 2013 Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) Dose coverage in image guided SBRT for NSCLC using tomotherapy. Kerkmeijer LGW, Althof VC, Steenberg R, Vonk E ESTRO Barcelona, mei 2012 Wetenschapsprijzen Deventer Ziekenhuis NVvTG congres 12 oktober 2012 Uitgereikt in 2012 I-I 25 Brachytherapy is safe in patients who underwent a prior TURP. Kattevilder R, Hoekstra C, Niel C, Pol van de S, Minken A, Nuver T, Westendorp R ESTRO Forum Genève, 19-23 april 2013 Jozefprijs uitreiking, 23 maart 2012 Jozefprijs: Tim Budding, co-assistent MDL Location in the Right Hemi-Colon Is an Independent Risk Factor for Delayed Post-Polypectomy Hemorrhage: A Multi-Center Case-Control Study. Budding KT, Herngreen T, Haringsma J, Van der Zwet WC, Vleggelaar FP, Breumelhof R, Ter Borg F. Am J Gastroenterol 2011;106:1119-24. Fiducial markers for liver SBRT using helical tomotherapy MVCT. Muller K, Ruiter de Q, Jacobs J, Niehoff I, Minken A, Westendorp R ESTRO Forum Genève, 19-23 april 2013 Eervolle vermelding: Jan Hessels, klinisch chemicus PeeSpot; urine home collection device. Innovatieve methode voor verzamelen van portie urine. Hessels J, Cairo DW, Slettenhaar M, Dogger M. Ned Tijdschr Klin Chem Labgeneesk 2011;36:249-251 CT metal artifact reduction in the pelvic area: Clinical evaluation of a commercial product. Hilgers G, Nuver T, Minken A ESTRO Forum Genève, 19-23 april 2013 Eervolle vermelding: Erik Badings, research arts cardiologie Strategies to detect abnormal glucose metabolism in people at high risk of cardiovascular disease from the ORIGIN (Outcome Reduction with Initial Glargine Intervention) trial population. Badings EA, Dyal L, Schoterman L, Lok DJ, Stoel I, Gerding MN, Gerstein HC, Tijssen JG. J Diabetes 2011;3:232-7. HDR prostate brachytherapy base don registered TRUS and In-Room Cone-Beam CT images. Nuver T, Even A, Westendorp H, Hoekstra C, Minken A ESTRO Forum Genève, 19-23 april 2013 Wetenschapsavond, 1 november 2012 Beste voordracht: Suzan Korste (M3-coassistent interne geneeskunde) Ureumklaring: Herleving van een oude analytische techniek? Een retrospectieve pilotstudie over het gebruik van de gemiddelde klaring van kreatinine en ureum voor het maken van een nauwkeurige schatting van de nierfunctie, onderzocht bij niertransplantatiepatiënten Korste SCC1, Sluiter HE2. 1 Coassistent Interne Geneeskunde,2Internist-Nefroloog, Deventer Ziekenhuis Promotie Fractionated stereotactic radiotherapy for uveal melanoma. Karin Muller Erasmus Universiteit Rotterdam, 7 september 2012 Wetenschappelijk overzicht 2012 - 2013 164 165 Wetenschappelijk overzicht 2012 - 2013 Wetenschapsprijzen Deventer Ziekenhuis Radiotherapeutisch Instituut Stedendriehoek en Omstreken (RISO) IMRT treatment for palliative irradiation of spinal bone metastasis. Kant I, Spoolder M, Loeters E, Minken A, Niël C ESTRO Forum Genève, 19-23 april 2013 State of the Art Lectures 2012 - 2013 Beste poster: Ilse Wolf (deskundige infectiepreventie) Wastafel op de IC is ESBL besmettingsbron voor patiënten. Wolf I 1, Bergervoet PWM 1, van der Zwet WC 1, van den Oever HLA 2, Savelkoul PHM 3, Sebens FW1 1 Laboratorium voor Medische Microbiologie en Infectiepreventie, Deventer Ziekenhuis, 2 Intensive Care, Deventer Ziekenhuis, 3 Moleculaire diagnostiek & Epidemiologie, VU medisch centrum, Amsterdam 2 februari 2012 Jurr Boer (dermatoloog) Hidradenitis suppurativa. Etterende bulten en puisten in je liezen en oksels; je zult het maar hebben !! Beste M3 wetenschappelijke stage: Marleen Maats (M3-coassistent interne geneeskunde) Immuunhistochemische biomarkers en de relatie met overleving in BRCA1like en non-BRCA1-like subgroepen in triple-negatieve borstkanker. Maats MEM1, Wesseling J2, Imholz ALT1, Lips EH2. 1 Afdeling interne geneeskunde Deventer ziekenhuis, 2Pathologie NKI-AVL Amsterdam 4 april 2012 Bernard Elsman (chirurg) Longchirurgie, van tomie naar scopie 7 juni 2012 Maurits Arbouw (ziekenhuisapotheker) en Marieke Zeeman (specialist ouderengeneeskunde) Polyfarmacie, uw probleem??? 6 september 2012 Michiel Ledeboer (MDL-arts) Het plaatsen van een endoprothese bij acute maligne dikke darm afsluiting: ‘Expert opinion’ of ‘evidencebased’? Publieksprijs: Sander Paas (M3-coassistent chirurgie) Lange termijn resultaten van distale radius fracturen behandeld met een volaire hoekstabiele plaat PaasSFE1,2, van ManenCJ3, Westerbeek RE3, Roerdink WH1 1 Deventer Ziekenhuis, afdeling Heelkunde, 2Rijks Universiteit Groningen, Universitair Medisch Centrum Groningen, 3Deventer Ziekenhuis, afdeling radiologie 4 oktober 2012 Peter van de Tillaar (uroloog) Neurostimulatie bij blaasfunctiestoornissen; of toch acupunctuur? 10 januari 2013 Monique Gorissen (kinderarts) ANAFYLAXIE, een specialisme-overstijgend intrigerend ziektebeeld. Hands On! 7 maart 2013 Fabrice MAC Martens (cardioloog) De introductie van de Nieuwe Orale Anticoagulantia (NOACs) 4 april 2013 Hebste Shirango (klinisch patholoog) Classificatie van hepatocellulair adenomen gebaseerd op genotype en fenotype. 16 mei 2013 Joost Zwart (gynaecoloog) Ernstige maternale morbiditeit: “de prijs van voortplanten”. Wetenschappelijk overzicht 2012 - 2013 166 167 Wetenschappelijk overzicht 2012 - 2013 State of the Art Lectures 2012 - 2013 Wetenschapsprijzen Deventer Ziekenhuis 6 december 2012 Bernadette van Nesselrooij (klinisch geneticus, UMC Utrecht) It’s all in the genes!??? Impactfactors 5 september 2013 Daniëlle Langeloo (orthopedisch chirurg) Voorste kruisbandletsel: reden tot reconstructie? 31 oktober 2013 D.Q. Ngo (neuroloog) Zenuw in beeld. 12 december 2013 Esther Vogels & Rolf Mahne (Anesthesiologie & Pijncentrum Oost-Nederland) Echogeleide analgesie. State of the Art Lectures 2012 - 2013 Wetenschappelijk overzicht 2012 - 2013 168 169 Eur J Cancer 5.061 Eur J Clin Pharmacol 2.741 Eur J Oncol Nurs 1.685 Eur J Vasc Endovasc Surg 2.820 Eur Radiol 3.548 Fertil Steril 4.174 Gastroenterology 12.821 Gastrointest Endosc 5.210 Graefes Arch Clin Exp Ophthalmol 1.932 Gynecol Obstet Invest 1.103 Heart 5.014 Hum Reprod 4.670 Injury 2.174 Int J Clin Pharm 0.859 Int J Pediatr Otorhinolaryngol 1.350 Int J Radiat Oncol Biol Phys 4.524 Int Orthop 2.319 J Am Soc Nephrol 8.987 J Appl Clin Med Phys 0.959 J Bone Joint Surg Am 3.234 J Cardiovasc Med 2.657 J Clin Pathol 2.439 J Eur Acad Dermatol Venereol 2.694 J Eval Clin Pract 1.508 J Med Internet Res 3.768 J Orthop Surg Res 1.013 J Pediatr 4.035 J Surg Oncol 2.644 JBR-BTR 0.261 Kidney Int 7.916 Knee Surg Sports Traumatol Arthrosc 2.676 Leuk Lymphoma 2.301 Med Teach 1.824 Mol Vis 1.987 Neth Heart J 1.411 Neth J Med 2.383 N Engl J Med 51.685 Wetenschappelijk overzicht 2012 - 2013 Impactfactors Acta Chir Belg 0.359 Acta Obstet Gynecol Scand 1.850 Acta Ophthalmol 2.345 Acta Paediatr 1.974 Am Heart J 4.497 Am J Cardiol 3.269 Ann Oncol 7.384 Ann Surg 6.329 Antivir Ther 3.073 Arch Otolaryngol Head Neck Surg 1.779 B-ENT 0.355 BJOG 3.760 BMC Musculoskelet Disord 1.875 BMC Pregnancy Childbirth 2.516 BMC Womens Health 1.505 BMJ 17.215 BMJ Qual Saf 2.394 Br J Cancer 5.082 Br J Clin Pharmacol 3.578 Br J Dermatol 3.759 Br J Oral Maxillofac Surg 2.717 Brachytherapy 1.220 Cerebrovasc Dis 2.814 Circ Heart Fail 6.684 Clin Chem Lab Med 3.009 Clin J Sport Med 1.600 Clin Res Cardiol 3.667 Contact Dermatitis 2.925 Dev Med Child Neurol 2.776 Diabetes Care 7.735 Dig Dis Sci 2.260 Dig Liver Dis 3.162 Dig Surg 1.472 Drugs Aging 2.646 Early Hum Dev 2.020 Emerg Med J 1.645 Endoscopy 5.735 EuroIntervention 3.173 3 oktober 2013 Edwin Wijburg (plastisch chirurg i.s.m. handtherapeuten van het DZ) De internationale medische en paramedische standaardbehandeling van de mallet anno 2013. Pharmacoepidemiol Drug Saf PLoS One Radiographics Radiother Oncol Sex Transm Infect 2.897 3.730 2.791 4.520 2.611 Strahlenther Onkol Support Care Cancer Ultrasound Obstet Gynecol Vox Sang Auteurs index 4.163 2.649 3.557 2.847 Wetenschappelijk overzicht 2012 - 2013 170 171 Gerding M Ginkel van CJ Gorissen DM Groenewegen-Sipkema KH Groot de R Grootjans W Gutteling J Haring CM Hartmans E Hem van der LG Herwaarden van MA Hessels J Hilgers G Hoekstra CJ Hofstee N Holter ten JB Hoppenreijs VP Hosson de SM Hotho DM Houtzager BA Houwers JB Houwing RH Ikink M Imholz ALT Immerzeel JJ Jacobs J Jansman FG Jaspers GW Jaspers MMJJR Jonbergen van HP Kant I Kattevilder R Kerkmeijer LGW Kessels L Klok CFM Klomp HA Koehler EM Kolk van der C Koopman T Koorevaar R Korste SCC Kortlandt F Koster K Kramer D Kruik-Kollöffel WJ Laarhoven van S Langeloo D Ledeboer M Leeuw van der -Harmsen L Liem MS Linden van der PJ Lindmae H Loeters E Lohmann HJ Lok DJ Lubberts B Maats M Manders JMB Manen van CJ Martens FMAC Merkx MM Minken AW Muller K Ngo DQ Niebling M Niehoff I Niël C Noo de ME Nunspeet van L Nuver TT Oei DTD Oosterwijk PR Ordelman A Paas S Pijl BJ Pol van de S Wetenschappelijk overzicht 2012 - 2013 Auteurs index Impactfactors Al Ali C Althof V Arbouw ME Badings E Barnaart AF Bergervoet PWM Berlo van-Laar van de IR Bie de SH Bisschop R Boeddha AV Boer J Bom SJH Borg ter F Bosker RJ Broeks IJ Bruggink-André de la Porte PW Budding T Buis CI Bulsink A Buwalda J Cobben JMG Dassel ACM Deckers I Derks RPH Deure van der J Diekman MJ Dijk van RAJM Dijkstra ML Doorenbos CJ Eddes EH Eeftinck Schattenkerk M Elsman B Even A Flikweert ER Fortuin AS Frima AJ Pruijsers-Lamers PH Rensen JM Reuver JM Riet van ’t A Rijssel van RH Roerdink WH Ruiter de Q Schepers T Schoevers WJ Scholten I Sebens FW Shirango H Sluis van der A Sluiter HE Smit FW Smits MM Spoolder M Sprakel J Steenberg R Stenfert Kroese MC Swart LE Stigter RH Tebbes M Teeuwen GM Tillaar van de P Tongeren van RB Tran VHP Tuininga YS Uijlings R Veen E Vermeij CG Verwoolde LH Vliet van A Vloedgraven HG Voet van der LF Vonk E Vries de H Wendker-van Wattum M Westendorp H Westerbeek RE Wieland CW Wierenga P Wiersma HW Wijnands WJ Wijngaarden van J Wind LJN Wolf I Zeeman M Zonneveld B Zwart JJ Zwaving H Zwet van der WC Auteurs index Wetenschappelijk overzicht 2012 - 2013 172