Shibata T, Kubota I, Ikeda K, Yamaki M, Hanashima K, Tsuiki K, Yasui S
First Department of Internal Medicine, Yamagata University School of Medicine, Japan.
Jpn Heart J. 1991 Mar;32(2):203-13. doi: 10.1536/ihj.32.203.
To examine the relation between ventricular depolarization and repolarization, body surface isopotential maps at the end of the QRS complex were studied in 32 normal subjects using a signal-averaged body surface mapping system. The number of beats averaged was 96-154 (mean 126.2). In this study, there were 8 types of isopotential map patterns at the end of the QRS complex. Mean +/- SD of QRS duration, appearance time of repolarization, and disappearance time of depolarization were 82.0 +/- 8.7 msec, 71.8 +/- 10.5 msec, and 79.7 +/- 9.4 msec, respectively. Time duration of overlapping depolarization and repolarization was 8.6 +/- 6.4 msec. The early repolarization was widely distributed on the left anterior chest and the upper sternal region. These results demonstrated the difference between the appearance time of repolarization and the disappearance time of depolarization for each lead. We concluded that it is difficult to evaluate ECG waves in the terminal portion of the QRS complex with the dipolar theory only.
为研究心室去极化与复极化之间的关系，我们使用信号平均体表标测系统，对32名正常受试者QRS波群终末时的体表等电位图进行了研究。平均搏动次数为96 - 154次（平均126.2次）。在本研究中，QRS波群终末时存在8种等电位图模式。QRS波持续时间、复极化出现时间和去极化消失时间的均值±标准差分别为82.0±8.7毫秒、71.8±10.5毫秒和79.7±9.4毫秒。去极化与复极化重叠的持续时间为8.6±6.4毫秒。早期复极化广泛分布于左前胸和胸骨上区。这些结果表明了各导联复极化出现时间与去极化消失时间之间的差异。我们得出结论，仅用偶极理论难以评估QRS波群终末部分的心电图波形。
