The drug which activates plasma antithrombin -III for its anticogulant action is____________?
Correct answer: C. Heparin
- A. Dicumarol
- B. Idphenadione
- C. Heparin
- D. Phenindone
Explanation
Heparin enhances the activity of plasma antithrombin III, which then inactivates thrombin and factor Xa. The coumarin-like drugs listed act by reducing synthesis of vitamin K-dependent clotting factors rather than activating antithrombin III.
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