In a patient without atrial fibrillation but with a history of TIA or stroke, which therapy is indicated?

In a patient without atrial fibrillation but with a history of TIA or stroke, which therapy is indicated?

• A. Aspirin
• B. Warfarin
• C. Heparin
• D. Clopidogrel

Answer: (A)

Focusing on prevention after a noncardioembolic ischemic event. In patients who’ve had a TIA or ischemic stroke but do not have atrial fibrillation or another cardioembolic source, the best way to reduce recurrence is with antiplatelet therapy. Aspirin is the standard first-line option because it effectively inhibits platelet aggregation and lowers the risk of arterial thrombosis with a favorable balance of benefit to bleeding risk in this context. Anticoagulants like warfarin are more appropriate when there is a cardioembolic source (such as atrial fibrillation or a mechanical valve); in noncardioembolic cases, they don’t prove superior to aspirin and carry a higher risk of major bleeding. Heparin isn’t used for long-term prevention. Clopidogrel can be an alternative if aspirin cannot be used, or in specific combinations, but the typical first-line choice in this scenario is aspirin.

Focusing on prevention after a noncardioembolic ischemic event. In patients who’ve had a TIA or ischemic stroke but do not have atrial fibrillation or another cardioembolic source, the best way to reduce recurrence is with antiplatelet therapy. Aspirin is the standard first-line option because it effectively inhibits platelet aggregation and lowers the risk of arterial thrombosis with a favorable balance of benefit to bleeding risk in this context.

Anticoagulants like warfarin are more appropriate when there is a cardioembolic source (such as atrial fibrillation or a mechanical valve); in noncardioembolic cases, they don’t prove superior to aspirin and carry a higher risk of major bleeding. Heparin isn’t used for long-term prevention. Clopidogrel can be an alternative if aspirin cannot be used, or in specific combinations, but the typical first-line choice in this scenario is aspirin.