Warfarin (Coumadin) Questions With Answers NCLEX Exam 2022

1. Warfarin (Coumadin) is an anticoagulant. What family of anticoagulant medications does this drug belong to? A. Direct thrombin inhibitors B. Indirect thrombin inhibitors C. Vitamin K antagonists D. Factor Xa inhibitors The answer is C. Warfarin (Coumadin) is an anticoagulant that belongs to the Vitamin K antagonists. 2. Which statement below BEST describes how Warfarin (Coumadin) works as an anticoagulant? A. “It inhibits the formation of thrombin and fibrin in the clotting process.” B. “It increases the production of Factor Xa, which blocks thrombin and decreases the clotting process.” C. “It binds to antithrombin and reverses the clotting process.” D. “It stops the coagulation process by blocking the formation of clotting factors in the liver that require Vitamin K to form.” The answer is D. Warfarin (Coumadin) stops the coagulation process by blocking the formation of clotting factors in the liver that require Vitamin K to form. This is why this drug is part of the Vitamin K antagonist family.