Appendix: Questionnaire A) General Informations 1. Gender female male □ □ 2. Specialization General practitioner Internal medicine Cardiology □ □ □ 3. Employment Private practice Hospital (number of beds Dept. of Internal Medicine) < 50 50-100 101-200 > 200 4. Professional experience 5-10 years 11-15 years > 15 years □ □ □ □ □ □ □ □ B) Guidelines 5. How often to you generally use guidelines for decision making? Never sometimes often very often □ □ □ □ C) Case Vignette You are called treat a patient with newly diagnosed atrial fibrillation of more than 48 hours duration and a CHADS2-Score ≥2 on an outpatient basis. You decide not to proceed to cardioversion but to controle the heart rate. The following risk situations are excluded: intracardial thrombi, personal history with cardioembolic events, mitral stenosis, prosthetic valve, heart failure, left ventricular ejection fraction <35%, left atrial dilatation of > 50mm, high bleeding risk or contraindications for an oral anticoagulation. 6. What is your preferred stroke prevention regimen to start with (only single answer)? a) You start a low dose oral anticoagulation (OAC) with: - Marcoumar® - Sintrom® b) You start OAC with a loading dose of: - Marcoumar ® - Sintrom® □ □ □ □ c) You start OAC with concomitant low molecular weight heparin (LMWH) subcutaneously: - prophylactic LMWH dose □ - therapeutic LMWH dose □ d) You prescribe - Aspirin - Aspirin + Dipyridamol - Clopidogrel □ □ □ e) You start a combination therapy with OAC + Aspirin or Clopidogrel □ f) others ……………………………………………………………………… □ 7. If the answer is 6c: When do you stop the LMWH? a) If the INR is in the target range (2.0-3.0) for two consecutive measurements □ b) If the INR is once in the target range (2.0-3.0) □ c) others: …………………………………………………………………………………… □ 8. What was your decision making regarding initial anticoagulation for the above mentioned Case vignette based on? - Guideline □ - Clinical experience/Gut feeling □ 9. Did you ever observe thromboembolic complications during the initial phase of anticoagulation in patients with atrial fibrillation? - No □ - Yes, with: OAC □ LMWH □ OAC + LMWH □ Aspirin/Clopidogrel □ OAC + Aspirin/Clopidogrel □ 10. Did you ever observe severe bleeding events during the initial phase of anticoagulation in patients with atrial fibrillation? - No - Yes, with: OAC LMWH OAC + LMWH Aspirin/Clopidogrel OAC + Aspirin/Clopidogrel □ □ □ □ □ □ 11. Did you ever observe an anticoagulation induced skin necrosis during the initial phase of anticoagulation in patients with atrial fibrillation? - No □ - Yes, with: OAC □ LMWH □ OAC + LMWH □ Aspirin/Clopidogrel □ OAC + Aspirin/Clopidogrel □ D) General questions related to the Case vignette 12. How many Patients similar to the one described in the case vignette did you treat during the last 6 months? none □ 1 to 5 □ >5 □ 13. How often do you encounter problems when initiating an OAC in outpatients with atrial fibrillation? never □ sometimes □ often □ very often □ 14. What kind of problems do you come across when initiating an OAC? Choice of the right drug patient education regarding OAC patient instruction regarding LMWH injections others □ □ □ □ E) Comments ………………………………………………………………………………………………… ……………………. ………………………………………………………………………………………………… ……………………..…………………………………………………………………………… ………………………………………… ………………………………………………………………………………………………… …………………….…………………………………………………………………………… ………………………………………….………………………………………………………