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Pregnant while taking Warfarin

Hi.
I have been taking Warfarin for a few years because of blood clots. Earlier on this year I changed to Clexane to have a break from the Warfarin. I restarted taking Warfarin on the 6th of December 2012.
This month I missed a period and a pregnancy test today showed positive. I think I am about 6 weeks gone... Have I harmed the baby? I tried to get an appointment with my Doctor but I have to phone back in the morning. I'm worried as I know Warfarin is bad during pregnancy.
Thanks.
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replied December 21st, 2012
Hi,
Welcome to ehealthforum,
It is difficult to comment on the exact effects of Warfarin on your pregnancy. Warfarin has been assigned to pregnancy category X by the FDA. Problems associated with perinatal administration of warfarin include central nervous system defects, spontaneous abortion, stillbirth, prematurity, hemorrhage, and ocular defects when given anytime during pregnancy, and a fetal warfarin syndrome (FWS) when given during the first trimester. Warfarin is considered to be contraindicated during pregnancy. Fetal warfarin syndrome (FWS) is characterized by nasal hypoplasia, hypoplasia of the extremities, and developmental retardation. If worried, you should visit your doctor/gynecologist for further evaluation. You may also consider discussing about effects on baby with a perinatologist. Anomaly scan done around 16-20 weeks gestation should also help to confirm/rule out any harmful effects on the baby. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately.
Take care.



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