A 55-year-old woman with persistent atrial fibrillation (CHA₂DS₂-VASc score = 4) is on apixaban. She undergoes cardioversion. Current ESC 2024 AF guidelines recommend anticoagulation be continued for how long after successful cardioversion to a sinus rhythm?
- A 4 weeks post-cardioversion only, then stop if sinus rhythm is maintained
- B Lifelong anticoagulation regardless of rhythm outcome ✓
- C Anticoagulation only if AF recurs within 3 months
- D 3 weeks pre-cardioversion then stop post-cardioversion if LA thrombus excluded by TOE
Correct answer: B. Lifelong anticoagulation regardless of rhythm outcome
Explanation
Current ESC 2024 AF guidelines recommend lifelong anticoagulation in patients with CHA₂DS₂-VASc ≥2 (men) or ≥3 (women) regardless of whether sinus rhythm is restored, because AF recurrence is common and subclinical, and embolic risk persists. Post-cardioversion stunning lasts 3–4 weeks, during which thrombus can form even in apparent sinus rhythm — hence a minimum of 4 weeks post-cardioversion anticoagulation is also required, but in high-risk patients it is continued lifelong.
Reference: Harrison's Principles of Internal Medicine, 21st ed.
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Written and medically reviewed by the StethoPrep medical team.