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患者男性,16岁,主因发热、心悸3天于1981年6月9日就诊。临床诊断风湿热。附图为就诊当天6pM同步描记的aVR、aVL、aVF及V_1导联心电图,示窦性P波,频率100次/分,P_2～P_5及P_13～P_16分别两组出现P-R间期逐搏延长至P波后R波脱落,房室传导比例4:3。QRS波呈4种形态:①长间歇后(0.144秒)第一个心搏(R_2,R_ν)之P-R间期固定为0.22秒,QRS波呈完全性左束支传导阻滞 (LBBB) 图形;②当R_3～R_4间期缩短为0.78秒时,QRS波呈不完全性LBBB图形(R_4);③而当R_2～R_3间期再
Male patient, 16 years old, mainly due to fever, palpitations 3 days in June 9, 1981 treatment. Clinical diagnosis of rheumatic fever. The accompanying drawings show the aVR, aVL, aVF and V_1 lead electrocardiogram of 6pM synchronous tracing on the day of treatment, showing sinusoidal P wave, frequency of 100 beats / min, P_2 ~ P_5 and P_13 ~ P_16 respectively. P wave R wave off, atrioventricular conduction ratio of 4: 3. There were four types of QRS wave: ①The PR interval of the first heartbeat (R_2, R_ν) was fixed at 0.22 second after long interval (0.144 seconds), the LBBB pattern showed on the QRS wave; ② When R_3 ~ R_4 interval shortened to 0.78 seconds, QRS wave showed incomplete LBBB pattern (R_4); ③ and R_2 ~ R_3 interval and then