Which statement is true about dabigatran in relation to thrombin?

Which statement is true about dabigatran in relation to thrombin?

• A. Dabigatran directly binds to thrombin (Factor IIa)
• B. Dabigatran inhibits Factor Xa
• C. Dabigatran inhibits vitamin K
• D. Dabigatran promotes thrombin activity

Answer: (A)

Dabigatran is a direct thrombin inhibitor. It binds directly to thrombin (Factor IIa) at the enzyme’s active site, blocking thrombin’s ability to convert fibrinogen into fibrin and to activate platelets, which prevents clot formation. It acts on thrombin itself rather than on Factor Xa or vitamin K, and it does not promote thrombin activity. It comes as a prodrug ( dabigatran etexilate) that is converted to the active form in the body. The characteristic mechanism here is directly binding to thrombin, making it the best description.

Dabigatran is a direct thrombin inhibitor. It binds directly to thrombin (Factor IIa) at the enzyme’s active site, blocking thrombin’s ability to convert fibrinogen into fibrin and to activate platelets, which prevents clot formation. It acts on thrombin itself rather than on Factor Xa or vitamin K, and it does not promote thrombin activity. It comes as a prodrug ( dabigatran etexilate) that is converted to the active form in the body. The characteristic mechanism here is directly binding to thrombin, making it the best description.