Audit: Management of women with perceived reduced fetal movement Maternity Unit, Southern General Hospital, Glasgow Angela Gillan University of Glasgow MBChB 5 August 2011 Page 1 Background Maternal perception of fetal movements, although subjective is the most commonly used method to assess fetal wellbeing. A sudden change or reduction in fetal movements is an important clinical sign that has been reported to precede intrauterine fetal death by 24hours1, however there is little agreement as to what constitutes normal fetal movement2. Current NICE guidelines state that fetal movement counting should not form part of routine antenatal screening but that women who do experience RFM should present for further assessment, however the guideline does not detail how the woman should be investigated3. This has led to the Royal College of Obstetricians and Gynaecologists (RCOG) to produce their own set of guidelines, to provide a format for maternal and fetal investigation. Aims To compare the management of women presenting to the maternity unit at the Southern General Hospital, Glasgow reporting reduced fetal movement (RFM) with the recommended management as outlined in the Royal College of Obstetricians and Gynaecologists Green-top Guideline 57, published February 2011. Standards Royal College of Obstetricians and Gynaecologists Green-top Guideline 57, published February 20114. Within this guideline is a flow chart detailing the management of RFM for those >28weeks gestation, see figure 1 Page 2 Figure 1 Methods A list of all women who presented to maternity services during the month of June 2011 reporting RFM was obtained by going through records held from daycare phone-in book, daycare appointments list, and maternity assessment arrivals book. Patient notes were requested from Maternity Records department and patient data was collected from case notes using a designed audit pro-forma, see appendix 1. Completed pro-forma sheets were recorded using Microsoft Excel spreadsheet and analysed using statistical programs; Minitab and SPSS. Page 3 Results A total of 134 (10.8%) patients reported RFM during June 2011 out of a possible 1241 patients who reported to the department whether over the phone or attended. Figure 2 details the loss of patients from study. Figure 2 One hundred and three patients were therefore analysed for the purpose of this audit. The mean age of women was 29.8yrs (16yrs - 43yrs), see figure 3. Fifty nine (57%) women were married, 41 (40%) in a relationship and 2 (2%) patients were single. Ninety one (88%) women were non smokers, 8 smoked less than 10/day, and 4 patients had no mention of smoking status. Eighty five (82.5%) women reported no alcohol consumption at booking, for seventeen women this part of notes was blank, and one patient said they drank 1-2 units per week. The mean BMI was 25.8 kg/m2 (18.0-37.9 kg/m2), with 55% of women being classified as overweight or obese, see figures 4 and 5. Page 4 The mean gestation of the women was 34.728 weeks, ie 34+5 weeks, range 19 – 41+5 weeks, see figure 6. Fetal presentation was mainly cephalic, 62 women (60.2%), 6 (5.8%) women had a breech position, two women were carrying twins in which one was cephalic and the other transverse and breech, and in a further 33 (32%) women, fetal presentation was not recorded in patient notes. Data for delivery, sex and weight of baby was available for those women who had delivered by the time data collection for this audit was finished at the end of July 2011. Thirty five (34.0%) women delivered by SVD, 16 (15.5%) ended up requiring an EMLUSCS, 4 (3.9%) had an ELLUSCS. Seven women required an assisted delivery. Of those that had delivered 33 (32%) women had a boy and 28 (27.2%) a girl. The mean weight of the newborns was 3.50kg (1.82 – 4.68kg), see figure 7. What is the optimal management of women with RFM? RCOG guidelines state that the initial goal is to exclude fetal death and then ‘exclude any fetal compromise and identify any pregnancies at risk of adverse outcome whilst avoiding unnecessary interventions’. Section 8.1 – What should be included in the clinical history? ‘Risk factors for stillbirth and fetal growth restriction (FGR), such as multiple consultations for RFM, known FGR, hypertension, diabetes, extremes of maternal age, primiparity, smoking, placental insufficiency, congenital malformation, obesity, racial/ethnic factors, poor past obstetric history (eg FGR and stillbirth and genetic factors)’. ‘If there are no risk factors and there is the presence of a heart beat on auscultation, she can be reassured and no other investigations are necessary’. In this audit all the relevant information was found relatively easily from patient notes, but not all in one place. It appears only a detailed history is taken if the woman is transferred to a ward. However it is likely history is taken by midwives when the woman arrives and whilst being attached to monitor, just not explicitly recorded. Eighty five women (82.5%) did not have hypertension, two women had gestational hypertension and were on medication, one woman attended clinic but was not on any medication and 15 had no mention in their notes. There were no patients found to have diabetes mellitus or gestational diabetes however there were 14 (13.6%) women who did not have information available in notes. Fifty three women (51.5%) were primigravida, and the remaining 50 (48.5%) women, multigravida. Page 5 87% reported no fetal abnormalities, see table 1 for known anomalies. Seventy five (72.8%) of women had no significant past pregnancy history, see table 2. Fifty women, (48.5%) did not have any significant medical factors regarding themselves, see table 3. Eighteen women (17.5%) were kept in hospital and an ultrasound scan arranged, all other women were reassured and went home. 8.2 – What should be covered in the clinical examination? ‘In the community setting, a handheld Doppler device should be used to auscultate fetal heart, if this is not available then the woman should be referred to the maternity unit. Clinical assessment should include assessment of fetal size with the aim of detecting SGA foetuses by way of abdominal palpation, measurement of symphysis-fundal height and ultrasound biometry. As pre-eclampsia is also associated with placental dysfunction, blood pressure and urinalysis are of benefit’. In this audit it appears measures of SGA were not routinely undertaken, and were detected by ultrasound either previously or as a result of presenting with RFM. Although in order for a CTG monitor to be appropriately placed a clinical examination needs to be carried but may not have been recorded in notes. Blood pressure measurement and urinalysis were routine investigations in all women and there is no mention of any patient being diagnosed with pre-eclampsia on admission. 8.3 – What is the role of the CTG? ‘After fetal viability has been confirmed, a CTG for at least 20 minutes should be arranged to exclude fetal compromise if gestation >28 weeks. Presence of a normal fetal heart rate is indicative of a healthy fetus’. In the 89 women at gestations above 28 weeks, CTG was performed in 88 (99%) women, the remaining woman did not have a mention of this in notes. Of the 88 women, only 5 (5.7%) had an abnormal CTG. Abnormal findings as stated in patient notes included; initial decelerations then recovery to normal rate (x2), initial poor variability before becoming reassuring, initial reduced variability and decelerations before returning to normal after an hour and variable decelerations down to 80bpm despite mother position change. 8.4 - What is the role of ultrasound scanning? ‘Ultrasound scan should be undertaken in RFM after 28 weeks gestation if the perception of RFM persists despite a normal CTG, or if there are any additional risk factors for FGR/stillbirth and should Page 6 include abdominal circumference and/or estimated fetal weight to detect the SGA fetus, and measurement of amniotic fluid volumes’. Ultrasound measurements were gathered by looking at most recent ultrasound scan and results if women went on to be rescanned after RFM. One woman (1%) had oligohydramnios (max pool 1.7cm), and two (1.9%) patients had polyhydramnios (max pools 10cm and 10.6cm). Fifty six (54.4%) were within the normal range and 44 measurements were not available. There were 25 (23.8%) babies within the 10th-50th growth centile, and 27 (25.7%) were in the 50th 95th growth centile. There was one baby below the 5th centile and five babies above the 95th centile. Forty seven sets of notes did not have this data available. There were two occasions where the baby appeared to have growth tailing off; one twin had dropped from 10th to 5th centile in last 3 weeks and another baby had dropped slightly from between 50th-95th centile 5 weeks earlier to the 50th centile.. Eighteen (17.5%) women were subsequently arranged an ultrasound scan after CTG. Only 3 patients had a clear indication written in notes regarding reasons for the ultrasound scan including patient still unaware of fetal movement, to check fetal lie and to check fetal presentation. Furthermore only 3 patients had an abnormal CTG, including initial decelerations which then improved and two women had initial poor variability then reassuring. For fifteen (83.3%) women this was their first presentation. The remaining three had presented with RFM once before. Significant past pregnancy history includes one patient suffering post natal depression, one previous PPH, one previous pre-eclampsia, one with a previous stillbirth and preeclampsia, and one who had severe pre-eclampsia requiring early delivery. Amniotic fluid volumes were normal in all eighteen (100%) women. Doppler results were available in fifteen (83.3%) women and were all normal. Half the babies (50%) scanned were in the 10th-50th growth centile, and the other 50% were in the 50th-95th growth centile. 9. What is the optimal surveillance method for women who have presented with RFM in whom investigations are normal? ‘Women should be reassured that 70% of pregnancies with a single episode of RFM are uncomplicated. There is no evidence to support formal fetal movement counting (kick charts) in those with normal investigations’. Page 7 For Eighty one (79%) women this was their first presentation of RFM, 17 patients had been once before reporting RFM, two had been twice and 3 women had attended three times previously regarding RFM. No information was recorded about use of kick charts. 10. What is the optimal management of a woman who presents recurrently with RFM? ‘Exclude predisposing causes and arrange an ultrasound scan. There are no studies to determine whether intervention alters morbidity or mortality therefore the decision whether or not to induce labour when all investigations are normal is at the discretion of the consultant’. Of the 33 women who had presented with RFM before, none had an abnormal CTG. One woman was induced but due to SPD pain not fetal concern, one woman was already booked for induction the next day and one woman wasn’t induced but a membrane sweep was performed. Only three women had an ultrasound, all parameters were normal and they were not induced. 11. What is the optimal management of RFM before 24 weeks of gestation? ‘The presence of a fetal heart beat should be confirmed by auscultation with a handheld Doppler device. If movements have never been felt by 24 weeks, referral to a specialist fetal medicine centre should be considered’. There were six (5.8%) women below 24 weeks of gestation (19+0 – 23+4 weeks). All women had a doptone and confirmed fetal heart beat. 12. What is the optimal management of RFM between 24 and 28 weeks of gestation? ‘Presence of a fetal heartbeat should be confirmed by auscultation with a handheld Doppler device. There are no studies looking at the outcome of women at this gestation. History must include a comprehensive stillbirth risk evaluation. There is no evidence to recommend the routine use of CTG surveillance in this group but if there is suspicion of FGR, consider ultrasound assessment’. There were eight (7.8%) women who presented with RFM between 24 and 28 weeks gestation. Five women had a CTG, four were between 26 and 28 weeks gestation and one was at 24+5 weeks. The three remaining women were investigated by handheld Doptone at gestations of 24 and 25+4 weeks. No abnormalities were found. There were no known fetal anomalies or any relevant history. Page 8 Conclusions Each patient has a brief history taken, BP measured and urinalysis and most depending on gestation are investigated by CTG, however clinical examination and history was seen to be lacking in patient notes, especially if only seen in maternity assessment and not seen on a ward by a doctor. Recommendations 1. Introduction of a formal algorithm for investigation of perceived RFM, incorporating gestational variances. 2. Greater use of the handheld Doppler and not immediate CTG investigation especially in cases <28 weeks. 3. Introduction of explicit guidelines for the use of ultrasound in RFM cases, as currently it appears to be the decision of the registrar/consultant, which has lead to a lack of consistency. 4. Introduction of a special RFM maternity assessment form to be filled in upon admission to the department which details all the risk factors for still birth, IUGR and SGA. This would provide a fitting structure to admission and allow for explicit notation of the clinical examination, relevant history and investigation results. Page 9 References 1. Froen JF., Arnestad M., Frey K., Vege A., Saugstad OD., Stray-Pedersen B. Risk factors for sudden intrauterine unexplained death: epidemiologic characteristics of singleton cases in Oslo, Norway, 1986-1995. Am J Obstet Gynecol. 2001. 184(4):694-702 2. Froen JF., Tveit JV., Saastad E., Bordahl PE., Stray-Pedersen B., Heazell AE., Flenady V., Fretts RC. Management of Decreased Fetal Movements. Semin Perinatol. 2008. 32:307-311 3. National Institute for Health and Clinical Excellence (NICE) guideline CG62 Antenatal Care: routine care for the healthy pregnant woman. 2008. 4. Royal College of Obstetricians and Gynaecologists. Green-top Guideline 57. Reduced Fetal Movements. February 2011. Word count: 1998 (excluding titles) Page 10 Tables and figures Figure 3 – Boxplot of age of women presenting to maternity with RFM during June 2011 45 40 Age (yrs) 35 30 25 20 15 Figure 4 – Boxplot of BMI of women presenting to maternity with RFM during June 2011 40 BMI (kg/m2) 35 30 25 20 Page 11 Figure 5 – BMI of women presenting to department with RFM during June 2011 according to NHS BMI classification Figure 6 – Boxplot of gestation of women who presented to maternity with RFM during June 2011 45 Gestation (weeks) 40 35 30 25 20 Page 12 Figure 7 – Weight of babies born to women who presented to maternity with RFM during June 2011 5.0 4.5 Weight (kg) 4.0 3.5 3.0 2.5 2.0 Girls Boys Page 13 Table 1 – Known fetal abnormalities reported in the notes of women presenting to maternity with RFM during June 2011 Fetal abnormality Large baby (>95th centrile) Increased MSAFP Large fetal heart, structure normal Initially SGA Left foot abnormality Polyhydramnios + low lying placenta Previous audible decelerations at ANC Pyelectasis of R fetal kidney R kidney hydronephrosis Splayed L vertebrae Heart anomalies – tricuspid atresia,large VSD,> normal head size No abnormalities reported in notes Totals Frequency 2 2 1 1 1 1 1 1 1 1 1 Percentage 1.94 1.94 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 90 103 87.4 100% Page 14 Table 2 – Significant factors relating to mother as reported in notes. NB: frequency refers to number of women who had that factor noted but one woman may have several factors thus one woman may be counted several times in this table and table totals therefore do not equal the number of women being analysed ie 103. Significant mother factors Group B strep infection Anaemic SPD pain Anxious Hx of depression/self harm/overdose Pre-eclampsia symptoms Current candida infection Lupus +ve Uterine/Cervical fibroids Backache Current discharge Recurrent UTIs Previous abusive relationship Chest pain Prev DVT/PE SOB Thrombocytopenia Braxton Hicks Asthma Hypothyroidism Prev cocaine and cannabis use Prev diagnosis anorexia nervosa as a teenager B-thalassaemia carrier Epilepsy FHx Down syndrome Flu symptoms GI upset Obstructed bowel at 32 weeks Diarrhoea and vomiting Bells Palsy Current emotional/physical abuse Prev CIN, had LLETZ One functioning kidney Hyperthyroidism Hydrosalpinx Rash on abdomen On going social work input Frequency 7 7 5 4 4 3 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Page 15 FHx spina bifida and hydrocephalus Scoliosis Assault at 26 weeks Previous detached retina Small stature SROM day before Twin pregnancy None 1 1 1 1 1 1 1 50 Table 3 – Significant past pregnancy history as reported in notes. NB: frequency refers to number of women who had that factor noted but one woman may have several factors thus one woman may be counted several times in this table and table totals therefore do not equal the number of women being analysed ie 103. Significant past pregnancy history Post natal depression Pre-eclampsia EMLUSCS IVF pregnancy Previous forceps delivery APH PPH Twin pregnancy Baby with ventricular megaly Prev SIDS Stillbirth at 35wks Placental abruption 2nd and 3rd degree tears Prev large baby (4.84kg) Gestational hypertension Son with muscular dystrophy none Frequency 5 5 4 3 2 2 2 2 1 1 1 1 1 1 1 1 75 Page 16 Appendix 1 Subject number CHI/SGH number Mother criteria Age at presentation Race Relationship status Smoking status Alcohol consumption (units/week at booking) BMI Hypertension circle appropriately single yes in relationship no married divorced no attends clinic Diabetes Parity no yes on insulin on medication yes on oral medication/diet GDM 1st presentation of RFM? Significant past obstetric Hx? Yes yes (give details) yes (give details) Significant current obstetric issues? Any known abnormalities prior to presentation of RFM? Gestation Investigations Blood sugar Hypoxic? BP Urinalysis normal? CTG performed? abnormal CTG Ultrasound performed? amniotic fluid normal vol growth centile? evidence of growth 'tailing off'? doppler normal? placenta position Fetal presentation Subsequently arranged for induction? no no no yes (give details) no yes no yes yes yes (give details) yes yes no (give details) no no no no (give details) yes (give details) yes anterior no (give details) posterior fundal no yes no lateral Baby delivered? How? Sex and weight Page 17