Question

A 72-year-old with nonvalvular atrial fibrillation (no mechanical valve or moderate-severe mitral stenosis) has CHA₂DS₂‑VASc=3. Renal function is normal. What is the preferred antithrombotic strategy to reduce stroke risk?

Accepted Answer

Initiate a direct oral anticoagulant

Answer

Start aspirin 81 mg daily

Answer

Start warfarin with heparin bridge

Answer

Dual antiplatelet therapy (aspirin + clopidogrel)

Answer

No antithrombotic therapy is indicated

Practice question

A 72-year-old with nonvalvular atrial fibrillation (no mechanical valve or moderate-severe mitral stenosis) has CHA₂DS₂‑VASc=3. Renal function is normal. What is the preferred antithrombotic strategy to reduce stroke risk?