Gynaecology & Obstetrics A patient at 22 weeks pregnancy is on warfarin for oral anticoagulation for a known cardiac condition. Heparin is re-introduced at what gestation? A 32 weeks B 36 weeks C 40 weeks D At the time of labor 💡 Explanation A patient at 22 weeks pregnancy is on warfarin for oral anticoagulation for a known cardiac condition. Heparin is re-introduced at what gestation? ✓ Correct Answer: B. 36 weeks