A 66-year-old man with AF (no mechanical valve, no mitral stenosis) asks when anticoagulation becomes a Class I recommendation. Estimated annual strok...

Question

A 66-year-old man with AF (no mechanical valve, no mitral stenosis) asks when anticoagulation becomes a Class I recommendation. Estimated annual stroke risk is 2.2%. What does the guideline advise?

Accepted Answer

Anticoagulation recommended at ≥2%/yr event risk

Answer

Anticoagulation not recommended below 3%/yr

Answer

Anticoagulation only if CHA₂DS²-VASc ≥4 regardless of risk

Answer

Aspirin plus clopidogrel preferred at 2%/yr

Answer

Anticoagulation only with documented left atrial thrombus

us-abim MCQ (SBA): Atrial Fibrillation Risk Threshold

A 66-year-old man with AF (no mechanical valve, no mitral stenosis) asks when anticoagulation becomes a Class I recommendation. Estimated annual stroke risk is 2.2%. What does the guideline advise?