Heparin: The Lifesaving Anticoagulant at the Heart of Modern Medicine
Heparin, a naturally occurring anticoagulant, has been a mainstay in clinical medicine for over 80 years. It prevents blood clot formation, making it indispensable in surgeries, dialysis, and the management of thromboembolic disorders. Its mechanism of action involves enhancing the activity of antithrombin III, a protein that inhibits clotting factors such as thrombin and factor Xa. This prevents the formation of fibrin, the structural component of blood clots, ensuring smooth blood flow throughout the circulatory system.
The two main forms of heparin—unfractionated heparin (UFH) and low-molecular-weight heparin (LMWH)—serve different therapeutic needs. UFH is commonly used in hospital settings where rapid anticoagulation and reversibility are required, while LMWH offers predictable pharmacokinetics and is preferred for outpatient use due to its convenience and reduced risk of bleeding.
Heparin’s role extends across various medical disciplines. In cardiology, it is used during angioplasty and bypass surgeries; in nephrology, it prevents clotting during hemodialysis; and…