Heart Beat: Heparin: a risky bridge over troubled waters?
Heart Beat
Warfarin keeps blood from clotting where it shouldn't, such as in a chamber of the heart, on a heart valve, or inside unbroken blood vessels. Millions of people take warfarin (Coumadin, generic) to prevent a clot-caused stroke, pulmonary embolism, or deep-vein thrombosis.
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