
Atrial fibrillation (AF) is the most common form of arrhythmia, affecting an estimated 2.2 million people in the United States. The goal of treatment is to reduce symptoms through rate or rhythm control and to prevent a cardioembolic event. Dronedarone (pronounced droe'' ne' da rone) is a noniodinated benzofuran derivative with characteristics of all 4 Vaughan-Williams antiarrhythmic classes. A search in clinicaltrials.gov for dronedarone phase 3 studies yielded 5 randomized controlled studies that investigated the efficacy and safety of the drug.