长Ⅱ显示窦性P波增宽,时间0.13s,呈双峰切迹,两峰距0.08s,表现为二尖瓣型P波特征,其P-P间期0.72s,频率83次/min。R_(13)搏动为提前出现P′-QRS-T波群,P′波落在前一搏动T波顶峰上,其顺传P′-R间期0.21s,QRS波群呈不完全性右束支传导阻滞图形。P-R间期呈短、长两种,相应的QRS形态有3种:(1)短的P-R间期为0.19s,如R_2、R_4、R_7、R_9、R_12搏动,其QRS波群呈不完全性右束 Long Ⅱ showed sinusoidal P wave broadening, time 0.13s, bimodal notch, the two peaks from 0.08s, the performance of mitral P-wave characteristics, the P-P interval 0.72s, the frequency of 83 beats / min. The pulsation of R_ (13) was P’-QRS-T wave group in advance, and the P wave fell on the peak of the previous pulsating T wave. The P’-R interval was 0.21s and the QRS complex was incomplete Bundle branch block graph. PR interval was short and long, the corresponding QRS morphology, there are three: (1) short PR interval of 0.19s, such as R_2, R_4, R_7, R_9, R_12 beating, the QRS complex was incomplete Right beam