What is heparin sodium?

Heparin sodium is part of a class of medications known as anticoagulants, commonly called blood thinners. The term "blood thinner" is misleading; heparin does not actually make the blood any less thick. It prevents the blood from clotting. It is used whenever there is an increased chance of blood clotting. For example, it may be administered if a person has to stay in bed for a long period of time, during open-heart or heart bypass surgery, or during kidney dialysis or blood transfusions. This would prevent blood from clotting in the catheter tubes.

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