(clopidogrel) inhibits platelet function and thereby inhibits the ability for blood clots to form. This is good for your arteries (prevents heart attack
), but can present a problem for surgery. Generally, surgeons are able to operate safely while a patient remains on plavix, but if the drug is able to safely be stopped then it is preferable to not operate on plavix. The key decision is to weigh the cardiovascular risk of stopping Plavix vs. The surgical risk of continuing it. If you have had a recent cardiac stenting
procedure, then stopping Plavix can be very dangerous. I would suggest that you talk with your cardiologist and ask him/her to discuss your specific case with your breast surgeon.