29.WHEN SHOULD BE WARFARIN REPLACED WITH HEPARIN IN PREGNANCY
A.28 WKS
B.32 WKS
C.36 WKS
D.POST PARTUM
ANS:POST PARTUM
DURING PREGNANCY IT WILL CAUSE FETAL WARFARIN SYNDROME,EVEN DURING 3RD TRIMESTER IT CAUSES MILD DEFECTS
Once pregnancy is confirmed, stop warfarin to avoid warfarin embryopathy. heparin 6-12wks, warfarin 12-36 wks, heparin 36wks - labour - 6 to 12wks postpartum depending on risk factors/etiology
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