Rise in chronic defibrillation energy requirements necessitating implantable defibrillator lead system revision

被引:7
|
作者
Daoud, EG [1 ]
Man, KC [1 ]
Morady, F [1 ]
Strickberger, SA [1 ]
机构
[1] UNIV MICHIGAN HOSP,DEPT INTERNAL MED,DIV CARDIOL,ANN ARBOR,MI 48109
来源
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY | 1997年 / 20卷 / 03期
关键词
defibrillation energy; implantable defibrillator;
D O I
10.1111/j.1540-8159.1997.tb03890.x
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
The chronic defibrillation energy requirement (DER) is believed to remain clinically stable in patients with defibrillators. Six patients (two with an epicardial and four with a nonthoracotomy system) were identified with a rise in their chronic DER, which eliminated a 10-J safety margin, thus necessitating a defibrillator lead system revision. The mean increase in DER was 14.7 +/- 4J and was discovered at a mean of 16.0 +/- 18 months (range 2-41) following implantation. Management included placement of a defibrillator with a biphasic waveform, placement of an additional defibrillation electrode, or both. At 2 months following revision of the defibrillation system, a 10-J DER safety margin was present in each patient. In some patients, there is a progressive increase in the chronic DER with elimination of a 10-J safety margin necessitating revision of the defibrillation system. Routine reevaluation of the chronic DER, therefore, is necessary to identify these patients.
引用
收藏
页码:714 / 719
页数:6
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