世界卫生组织的统计数字表明,心血管病患者的死亡情况至少有一半是猝死。因此,猝死的研究与防治是现代心脏病学的研究重点之一。80年代出现了一种无创伤性的心电检测技术——体表信号平均心电图。心电图中QRS波终末部分高频低幅的碎裂波称为心室晚电位。电生理学的研究表明,心脏病患者室性心率失常及心脏性猝死的发生跟心室晚电位的出现有密切关系。但是,从体表检测 World Health Organization statistics show that at least half of cardiovascular deaths are sudden death. Therefore, the study and prevention of sudden death is one of the focuses of modern cardiology research. 80s appeared a noninvasive ECG detection technology - average body surface signal ECG. Electrocardiogram QRS wave terminal part of the high frequency low amplitude fragmentation wave called ventricular late potential. Electrophysiology studies have shown that heart ventricular ventricular arrhythmias and sudden cardiac death occur with the occurrence of ventricular late potential are closely related. However, from body surface detection