Internal atrial defibrillation during electrophysiological studies and focal atrial fibrillation ablation procedures

被引:15
作者
Karch, MR
Schmieder, S
Ndrepepa, G
Schneider, MAE
Zrenner, B
Schmitt, C
机构
[1] Deutsch Herzzentrum Munchen, D-80636 Munich, Germany
[2] Tech Univ Munich, Klinikum Rechts Isar, Med Klin 1, D-8000 Munich, Germany
来源
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY | 2001年 / 24卷 / 10期
关键词
atrial fibrillation; internal atrial defibrillation; electrophysiological study; catheter ablation;
D O I
10.1046/j.1460-9592.2001.01464.x
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Induction of sustained AF during electrophysiological studies requires electrical cardioversion to restore sinus rhythm for continuation of the electrophysiological study and mapping procedure. The study included 104 consecutive patients (age 59 +/- 12 years, 74 men), who were in stable sinus rhythm at the beginning of the electrophysiological study, underwent internal atrial defibrillation (IAD) of AF (> 15 minutes) that was induced during electrophysiological study. In 21 patients, AF was regarded to be the clinical problem (group I), and in the remaining 83 patients other arrhythmias represented the primary target of the electrophysiological study (group II). A 7.5 Fr cardioversion catheter (EP Medical) equipped with a distal array was used and placed in the left pulmonary artery and a proximal array of the same size was located along the lateral right atrial wall. All patients were successfully cardioverted with a mean energy of 6.2 +/- 4.0 J. In 18 (78%) of 21 group I patients and in 12 (14 %) of 81 group II patients, AF recurred 3.7 +/- 3.4 and 2.4 +/- 1.4 times during electrophysiological study, respectively. The IAD shock did not suppress focal activity, thus the mapping of atrial foci responsible for AF could be continued even after several IADs. No IAD related complications occurred during the study. In conclusion, (1) IAD can be safely and successfully performed during electrophysiological study without using narcotic drugs or high electric energies; (2) IAD does not suppress focal activity; and (3) even if AF recurs frequently during the electrophysiological study, IAD can be performed several times without significant time delay.
引用
收藏
页码:1464 / 1469
页数:6
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