Importance of pacing site in entrainment of ventricular tachycardia.
Importance of pacing site in entrainment of ventricular tachycardia.
复制标题
起搏部位在室性心动过速夹带中的重要性。
DOI：
10.1016/s0735-1097(85)80412-5
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发表时间：
1985
影响因子：
24
通讯作者：
C. Wyndham
中科院分区：
文献类型：
--
作者：
D. Mann;G. Lawrie;J. Luck;J. Griffin;S. Magro;C. Wyndham
起搏引起的短暂夹带已在各种快速心律失常（包括室性心动过速）中得到证实。描述了一名患者患有两种形态不同形式的由程序刺激引起的持续性室性心动过速。证明了室性心动过速的两种构型的夹带。夹带的证据包括在不同起搏周期长度下起搏复合波和室性心动过速复合波之间存在不同程度的融合，以及观察到最后夹带的心搏始终不融合并且在结构上与室性心动过速复合波相同。室性心动过速的终止仅发生在失去融合的起搏周期长度处。导管心内膜标测表明室性心动过速的两种构型均起源于间隔。夹带的表现取决于起搏部位，仅在心室起搏期间可见，与室性心动过速期间显示最早激活的情况相反。因此，当试图引起室性心动过速时，应在两个心室使用多个起搏点。
Transient entrainment by pacing has been demonstrated during various tachyarrhythmias, including ventricular tachycardia. A patient is described who had two morphologically distinct forms of sustained ventricular tachycardia induced by programmed stimulation. Entrainment of both configurations of ventricular tachycardia was demonstrated. Evidence for entrainment included the presence of different degrees of fusion between paced and ventricular tachycardia complexes at different pacing cycle lengths, and the observation that the last entrained beat was always unfused and identical in configuration to the ventricular tachycardia complexes. Termination of ventricular tachycardia only occurred at pacing cycle lengths at which there was loss of fusion.Catheter endocardial mapping suggested a septal origin of both configurations of ventricular tachycardia. Demonstration of entrainment was dependent on pacing site, being seen only during pacing in the ventricle opposite from that showing earliest activation during ventricular tachycardia. Thus, when attempting to entrain ventricular tachycardia, multiple pacing sites in both ventricles should be used.