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By John P. DiMarco, MD, PhD Professor of Medicine, Division of Cardiology, University of Virginia, Charlottesville Dr. DiMarco is a consultant for Novartis and does research for Medtronic and Guidant. Synopsis: Amiodarone and sotalol have a similar efficacy for converting atrial fibrillation to sinus rhythm, that the drugs do not significantly impair electrical cardioversion and that amiodarone is superior to sotalol which, in turn, is better than placebo, for maintaining sinus rhythm. Source: Singh BN, et al. Amiodarone Versus Sotalol for Atrial Fibrillation. N Engl J Med. 2005;352:1861-1872.

Amiodarone vs Sotalol for Atrial Fibrillation