Is a wait-and-see approach noninferior to early cardioversion in achieving sinus rhythm 4 weeks after an emergency department visit for new-onset, symptomatic atrial fibrillation?

BEEM Bottom Line

Why is this study important?

Management of atrial fibrillation (AF) in the emergency department (ED) is common, and the optimal approach requires consideration of safe, effective, cost-efficient care. This trial focused on whether rate control only in the ED and discharge for early follow-up is noninferior to an ED rhythm control strategy.

Which, if any, threats to validity are most likely to have an impact on the results and how?

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