心室晚电位的发现及体表信号平均技术的发展,已在折返性室性心律失常高危患者的识别及心肌梗塞后心律失常事件的预测中得到广泛应用。同样,心房颤动(房颤)亦由折返机制所致,其发生及维持有赖于心房内缓慢传导的存在。基于以上观点,本文探讨信号平均心电图(SAECG)识别房颤患者心 The discovery of ventricular late potentials and the development of surface signal averaging techniques have been widely used in the identification of patients at high risk of reentrant ventricular arrhythmias and in the prediction of arrhythmic events after myocardial infarction. Similarly, atrial fibrillation (atrial fibrillation) is also caused by the reentry mechanism, the occurrence and maintenance of which depends on the presence of slow conduction in the atria. Based on the above point of view, this article discusses the signal average electrocardiogram (SAECG) to identify patients with atrial fibrillation heart