冠心病、心肌梗塞所致的室性心动过速、心室颤动甚或猝死是当前学者们密切关注而有待解决的重要问题。采用体表信号叠加心电图(signalaveraged electrocardiogram,SAECG)是80年代以来开始用于临床预测恶性心律失常或猝死的一种无创伤性检查技术。近年来国内少数医疗单位正在开展这种研究和检查。Josephson等从 Coronary heart disease, myocardial infarction caused by ventricular tachycardia, ventricular fibrillation or sudden death is the current scholars pay close attention to the important issues to be solved. Signalaveraged electrocardiogram (SAECG) is a noninvasive technique that has been used clinically to predict malignant arrhythmia or sudden death since the 1980s. In recent years, a handful of medical units in China are conducting such research and inspection. Josephson et al