Which of the following agents should not be used for oral anticoagulation in high risk patients with atrial fibrillation
Correct Answer: Clopidogrel
Description: Oral anticoagulation in high-risk patients with AF includes vitamin K antagonists or the newer anticoagulants such as thrombin inhibi- tors (dabigatran) or factor Xa inhibitors (rivaroxaban, apixaban), but not antiplatelet agents (aspirin and clopidogrel), which have substantially less effect. Ref Harrison 20th edition pg 1456
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