ExplanationIntermediate
What is the mechanism of action of heparin as an anticoagulant?
Heparin acts as an anticoagulant by enhancing the activity of antithrombin III, which inactivates several clotting factors. At high doses, heparin can inactivate nearly all clotting factors, while at lower doses, it primarily inhibits factor Xa. This mechanism allows for rapid anticoagulation, making heparin useful in acute situations like pulmonary embolism and deep vein thrombosis.
Key points
- Heparin enhances antithrombin III activity.
- Inactivates clotting factors, especially factor Xa.
- Used for rapid anticoagulation in emergencies.
- Administered subcutaneously or intravenously.
Source:Fundamentals of Pharmacology: An Applied Approach for Nursing and Health· Anticoagulants, thrombolytics and antiplatelet drugs· p. 506–513
Fundamentals of Pharmacology: An Applied Approach for Nursing and Health
Alan Galbraith ... [et Al.].
Second Edition · Routledge