Low energy internal cardioversion of atrial fibrillation resistant to transthoracic shocks

被引：42

作者：

Sopher, SM ^{[1
]}

Murgatroyd, FD ^{[1
]}

Slade, AKB ^{[1
]}

Blankoff, I ^{[1
]}

Rowland, E ^{[1
]}

Ward, DE ^{[1
]}

Camm, AJ ^{[1
]}

机构：

[1] UNIV LONDON SCH MED,LONDON,ENGLAND

来源：

HEART | 1996年 / 75卷 / 06期

关键词：

arrhythmia; atrial fibrillation; electric countershock;

D O I：

10.1136/hrt.75.6.635

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Objective-To investigate the efficacy of internal cardioversion using low energy shocks delivered with a biatrial electrode configuration in chronic atrial fibrillation resistant to transthoracic shocks. Methods-Low energy internal cardioversion was attempted in 11 patients who had been in atrial fibrillation for 233 (SD 193) days and had failed to cardiovert with transthoracic shocks of 360 J in both apex-base and anterior-posterior positions. Synchronised biphasic shocks of up to 400 V (approximate to 6 J) were delivered, usually with intravenous sedation only, between high area electrodes in the right and the left atrium (coronary sinus in nine, left pulmonary artery in one, left atrium via patent foramen ovale in one). Results-Sinus rhythm was restored in 8/11 patients. The mean leading edge voltage of successful shocks was 363 (46) V [4.9 (1.2) J]. Higher energy shocks induced transient bradycardia [time to first R wave 1955 (218) ms]. No proarrhythmia or other acute complications were observed. Conclusions-Low energy internal cardioversion of atrial fibrillation can restore sinus rhythm in patients in whom conventional transthoracic shocks have failed.

引用

页码：635 / 638

页数：4

共 32 条

[11] CATHETER-MEDIATED ELECTRICAL ABLATION OF THE POSTERIOR SEPTUM VIA THE CORONARY SINUS - ELECTROPHYSIOLOGIC AND HISTOLOGIC OBSERVATIONS IN DOGS [J].