Frequency and Output‐Dependent Change in Conduction Over Slow Pathways in a Patient with Sustained Ventricular Tachycardia Unrelated to Coronary Artery Disease
Frequency and Output‐Dependent Change in Conduction Over Slow Pathways in a Patient with Sustained Ventricular Tachycardia Unrelated to Coronary Artery Disease
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与冠状动脉疾病无关的持续性室性心动过速患者慢通路传导的频率和输出依赖性变化
DOI：
10.1111/j.1540-8159.1992.tb06842.x
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
A. Shibata
中科院分区：
文献类型：
--
作者：
M. Chinushi;Y. Aizawa;T. Funazaki;M. Tamura;A. Shibata
Mr. Jasushi，M.，等：与冠状动脉疾病无关的持续性室性心动过速患者慢径传导的频率和输出依赖性变化。在持续性室性心动过速患者中，我们从单个起搏部位获得了两种不同的起搏QRS形态。在一种QRS形态中，对QRS波群的刺激是长的，150毫秒，而在另一种形态中是100毫秒。在起搏周期长度为600 msec和刺激输出为4 V时，观察到一个QRS形态，刺激至QRS激动开始（St-QRS）间期为150 msec。在起搏周期长度为400 msec时，与前者交替观察到St-QRS间期为100 msec的另一种QRS形态。在起搏周期长度为353 msec或316 msec时，仅观察到后者具有较短的St-QRS间期。当刺激输出从4 V增加到10 V时，保持起搏周期长度为400 msec，St‐QRS间期从100 msec缩短到80 msec。对于具有两个St-QRS间期的两个QRS形态，两个缓慢传导的通路将负责。快速通路中的阻滞部位必须位于起搏部位附近，并且在较短起搏周期长度下的传导将被解释为“超常传导”。
CHINUSHI, M., et al.: Frequency and Output‐Dependent Change in Conduction Over Slow Pathways in a Patient with Sustained Ventricular Tachycardia Unrelated to Coronary Artery Disease. In a patient with sustained ventricular tachycardia, we obtained two different paced QRS morphologies from a single pacing site. In one QRS morphology the stimulus to the QRS complex was long, 150 msec, and in the other it was 100 msec. At the paced cycle Iength of 600 msec and the stimulus output of 4 V, one QRS morphology with the stimulus to the onset of QRS activation (St‐QRS) interval of 150 msec was observed. At the paced cycle length of 400 msec, the other QRS morphology with a St‐QRS interval of 100 msec was observed alternately with the former. At the paced cycle length of 353 msec or 316 msec, the latter with a shorter St‐QRS interval was exclusively observed. When the stimulus output was increased from 4 to 10 V, keeping with the paced cycle length at 400 msec, the St‐QRS interval was shortened from 100 to 80 msec. For the two QRS morphologies with two St‐QRS intervals, two slowly conducting pathways would be responsible. The site of the block in the faster pathway must be located at the proximity of the pacing site and the conduction at a shorter paced cycle length would be explained by “supernormal conduction.”
证明人类持续性室性心动过速期间存在慢传导：使用心动过速的瞬时夹带。
影响因子：
37.8
作者：
Okumura,K;Olshansky,B;Henthorn,RW;Epstein,AE;Plumb,VJ;Waldo,AL
通讯作者：
Waldo,AL