Potratz J, Djonlagić H, Wege G, Diederich K W
Z Kardiol. 1983 Oct;72(10):609-16.
The role of delayed potentials in ventricular arrhythmias occurring in connection with acute myocardial infarction has been of increasing interest in recent years. In order to obtain further information about delayed electrical activity, we studied a group of 51 patients in the acute phase of myocardial infarction, and intracardiac recordings were made using bipolar electrodes. In 31 of the 51 patients we recorded delayed potentials 150-200 ms after the beginning of QRS. 14 patients showed delayed electrical activity in diastole even after the T wave. The same potentials as those obtained by intracardiac recording techniques were also recorded from the body surface using a signal-averaging technique. In several cases we were able to show that these delayed potentials initiated premature ventricular beats. In 1 patient a sustained ventricular tachycardia induced by delayed potentials was recorded. We found that delayed potentials could be abolished by antiarrhythmic drugs. There thus appears to be an important relationship between delayed electrical activity and the occurrence of ventricular arrhythmias.
近年来，延迟电位在与急性心肌梗死相关的室性心律失常中所起的作用越来越受到关注。为了获取关于延迟电活动的更多信息，我们研究了一组51例处于心肌梗死急性期的患者，并使用双极电极进行心内记录。在51例患者中的31例，我们在QRS波开始后150 - 200毫秒记录到了延迟电位。14例患者即使在T波之后的舒张期仍显示有延迟电活动。使用信号平均技术也从体表记录到了与心内记录技术所获得的相同电位。在几例患者中，我们能够证明这些延迟电位引发了室性早搏。在1例患者中记录到了由延迟电位诱发的持续性室性心动过速。我们发现抗心律失常药物可以消除延迟电位。因此，延迟电活动与室性心律失常的发生之间似乎存在重要关系。
