Question

A 72-year-old woman with non-valvular atrial fibrillation, hypertension and prior transient ischaemic attack has been taking aspirin 81 mg daily only. Her CHADS-65 criteria are positive (age ≥65 and prior TIA). According to the 2020 CCS atrial fibrillation guideline, what is the most appropriate stroke prevention strategy?

Accepted Answer

Start a direct oral anticoagulant at standard stroke prevention dose

Answer

Continue aspirin alone

Answer

Start dual antiplatelet therapy with aspirin and clopidogrel

Answer

Start low-dose warfarin (INR 1.5-2.0)

Answer

Withhold antithrombotic therapy because she is elderly

Practice question