Oral anticoagulant which inhibit thrombin directly-

Ans. is 'a' i.e., Dabigatran Parentral direct thrombin inhibitors o Argatrobano Hirudino Bivalirudino Lepirudino Melagatran o Desirudin Oral direct thrombin inhibitors o Dabigatran (recent)o Ximelagatran (withdrawn)