对双峰P波发生较多的风心病、心肌梗塞、阵发性房颤进行观察,并随机抽取心电图100份作为对照。结果表明:观察组双峰P波发生率、P波时间、双峰P波峰距、PTFv_1及Macruz指数,与对照组有显著差异:双峰P波出现导联,风心病见于多数导联,心肌梗塞与梗塞部位密切相关,房颤及对照组多发生于胸导联:双峰P波可能与室上性心律失常有关:“二尖瓣型”P波对病因诊断仍有一定价值。 The occurrence of rheumatic heart disease, myocardial infarction and paroxysmal atrial fibrillation were observed in the bimodal P wave, and 100 electrocardiogram were randomly selected as the control. The results showed that: the incidence of double peak P wave, P wave time, double peak P wave peak distance, PTFv_1 and Macruz index in the observation group were significantly different from those in the control group: the double peak P wave appeared in the lead, Infarct is closely related to the infarction site. Atrial fibrillation and the control group mostly occur in the chest lead: bimodal P wave may be related to supraventricular arrhythmias: “mitral valve” P wave is still valuable for etiological diagnosis.