Doctor insights on:
How could warfarin effect an embryo that is 2 weeks old in fetal age (4 weeks gestational)? There isn't even a placenta yet
Great question: This assumes that you know exactly when you conceived. We see women all the time who have incorrect dates based on irregular timing of ovulation, conception and implantation. The fact is, warfarin is 'teratogenic' in the first trimester. Why would you take this risk? Talk to an mfm specialist. ...Read more
Warfarin is teratogenic to a fetus. So why would my thrombosis specialist tell me to switch to lmwh only when i get pregnant and not before? Confused!
Days of exposure: I'm assuming that your doctor knows you will take a pregnancy test as soon as you miss a period and that your periods are regular. There's no harm in switching to lmwh before conception, if you feel strongly, you can suggest that. The 2012 accp guidelines only 'weakly' suggest switch from warfarin --> lmwh after conception. There's absolutely no problem on lmwh while trying to conceive. ...Read moreSee 2 more doctor answers
Many: As dr. Villaplana said, there are several. There are shots and pills. Although using alternatives to warfarin means that you don't have to be as careful about what you eat and you don't have to have regular blood tests to check whether you are getting too much or too little warfarin, they still have drawbacks. One of the most significant is that the alternatives are all a lot more expensive. ...Read moreSee 1 more doctor answer