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Dronedarone: current evidence and future questions Schafer JA; Kjesbo NK; Gleason PPCardiovasc Ther 2010[Spr]; 28 (1): 38-47Atrial fibrillation (AF) is the most common sustained arrhythmia, affecting more than 2.2 million Americans. ACC/AHA/ESC guidelines for the management of patients with AF recommend amiodarone for maintaining sinus rhythm. Dronedarone is a derivative of amiodarone indicated for the treatment of AF. To provide an overview of dronedarone with a focus on the phase III trials and discuss unresolved questions of dronedarone. A literature search was conducted via the PubMed database using the keyword "dronedarone." Search was limited to human trials in english. The FDA website was searched for briefing documents and subcommittee meetings on dronedarone. Clinicaltrials.gov was searched with the keyword dronedarone for upcoming or unpublished clinical trials. Five phase III trials are available for dronedarone: ANDROMEDA, EURIDIS/ADONIS, ATHENA, ERATO, and DIONYSIS. EURIDIS/ADONIS and ATHENA demonstrated a reduction AF recurrence with dronedarone compared to placebo. The ANDROMEDA trial recruited patients with recent hospitalization for heart failure and was terminated due to an excess of deaths in the dronedarone group. The DIONYSIS trial was a comparative effectiveness trial that demonstrated less efficacy for dronedarone but improved tolerability compared to amiodarone. Dronedarone represents an option in the management of AF in select patients. Dronedarone is not appropriate in patients with recently decompensated heart failure or those treated with strong CYP3A4 inhibitors or medications prolonging the QT interval. Dronedarone appears to have improved tolerability at the expense of decreased efficacy when compared to amiodarone. Questions remain on the long-term safety, use in patients with heart failure, retreatment after dronedarone or amiodarone failure, and comparative efficacy with a rate control strategy.|Amiodarone/adverse effects/*analogs & derivatives/pharmacokinetics/therapeutic use[MESH]|Animals[MESH]|Anti-Arrhythmia Agents/adverse effects/pharmacokinetics/*therapeutic use[MESH]|Atrial Fibrillation/*drug therapy[MESH]|Clinical Trials, Phase III as Topic[MESH]|Dronedarone[MESH]|Drug Interactions[MESH]|Evidence-Based Medicine[MESH]|Humans[MESH]|Patient Selection[MESH]|Risk Assessment[MESH]|Treatment Outcome[MESH] |
