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常规心电图是诊断急性心肌缺血、心肌梗塞和鉴别致命性心律失常不可缺少的手段。近年电生理学和实验室检查的进展明确了缺血性心律失常的发生机制。认为心脏搏动后心肌细胞复极存在局部差异。这种电生理差异能从12个标准导联中获取。为观察心脏病人心电特征提供了新的方法。作者用12个标准导联测定急性心肌缺血时QT离散
Conventional ECG diagnosis of acute myocardial ischemia, myocardial infarction and identification of fatal arrhythmias indispensable means. Recent advances in electrophysiology and laboratory tests have clarified the mechanism of ischemic arrhythmia. There is a local difference in repolarization of cardiomyocytes after heart beating. This electrophysiological difference can be obtained from 12 standard leads. It provides a new way to observe the ECG characteristics of heart patients. The authors used 12 standard leads to determine QT dispersion during acute myocardial ischemia