例图1:李××,男,68岁。临床诊断为冠心病。心电图所见与分析:P波规律出现,正向。P—R间期0.16″,为窦性心律。各导联可见QRS波群时限宽达0.13″。胸导V_1呈rsR′型,V_5的S波及aVL的q波宽钝,时限≥0.04″。T波V_1倒置,V_5直立,提示完全右束支传导阻滞。导联Ⅰ、aVL为qRS型,Ⅱ、Ⅲ、aVF为rS Example Figure 1: Lee × ×, male, 68 years old. Clinical diagnosis of coronary heart disease. ECG findings and analysis: P wave appears, positive. P-R interval of 0.16 “for the sinus rhythm of each lead can be seen wide QRS wave group of 0.13”. Chest lead V_1 was rsR ’type, V_5 S wave and aVL q wave width blunt, the time limit ≥0.04 ".T wave V_1 inversion, V_5 upright, suggesting complete right bundle branch block. Lead Ⅰ, aVL qRS type, Ⅱ, Ⅲ, aVF is rS