Europace Advance Access originally published online on November 11, 2009
Europace 2009 11(12):1620-1623; doi:10.1093/europace/eup363
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ablation for Atrial Fibrillation
Pharmacological cardioversion preceding left atrial ablation: bepridil predicts the clinical outcome following ablation in patients with persistent atrial fibrillation
1 Cardiovascular Center, Yokosuka Kyosai Hospital, Yonegahamadori, 1-16, Yonegahamadori, Yokosuka, Kanagawa 238-8558, Japan; 2 Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
Aims: Bepridil is highly effective in terminating persistent atrial fibrillation (AF). Despite continued treatment, a high rate of AF recurrence after pharmacological cardioversion (PC) with bepridil has been reported. Bepridil therapy is also associated with significant adverse effects.
Methods and results: This retrospective case–control study included 82 patients with persistent AF (PEF). Group 1 (22 patients) comprised cases undergoing AF ablation following attempted PC with bepridil. Group 2 (60 patients) comprised control that underwent AF ablation without bepridil pre-treatment. In Group 1, 15 patients (68%) restored sinus rhythm (SR) with bepridil (SR group) and 7 continued to have AF (AF group). SR group underwent extensive pulmonary vein isolation (EPVI) alone. AF group and Group 2 underwent linear ablation after EPVI, if AF was inducible. At the end of 18 ± 5 months off antiarrhythmic drugs, the AF-free rate was 87% in SR group, 29% in AF group, and 72% in Group 2 (72 vs. 29%, P = 0.02).
Conclusion: Following AF ablation in patients who successfully restored SR with bepridil pre-treatment, AF-free rate was significantly higher than in those who failed to do so. Conversion to SR with bepridil might help select the optimal patients with PEF for catheter ablation.
Key Words: Pharmacological cardioversion, Atrial fibrillation, Catheter ablation, Extensive pulmonary vein isolation, Bepridil
* Corresponding author. Tel: +81 468 22 2710, Fax: +81 468 25 2103, Email: mshinsuke{at}k3.dion.ne.jp
Manuscript submitted 7 August 2009. Accepted after revision 20 October 2009.