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Infertility

Baby aspirin and pregnancy

03/13/2009

Question:

I have been taking a baby aspirin daily since positive pregnancy test because I`ve had 2 previous miscarriages. Blood tests for thrombophilias was negative, but I was prescribed progesterone and baby aspirin as a precaution. I am now 20 weeks and no longer taking the progesterone. How long should I continue to take the baby aspirin as a precaution? Are there any risks in continuing to take it?

Answer:

In the absence of a specific clotting or autoimmune disorder, there is no definitive evidence for the benefit of aspirin for the prevention of pregnancy loss.  As the risk of pregnancy loss is highest in the first trimester, this treatment is usually discontinued after 12 weeks of pregnancy.

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Response by:

Daniel B Williams, MD Daniel B Williams, MD
Formerly:
College of Medicine
University of Cincinnati