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患者,男,63岁,临床诊断冠心病。ECG(附图)示P波有规律发生,P-P间期0.92～0。96秒,频率62～66次/分。R-R间期二长一短,长者1.68秒,短者1.32秒,频率36～45次/分。P-R间期有二种相对固定,P_(1,6,11,16)-R间期为0.17秒,P_(4,9,14)-R间期为0.36秒。长短P-R间期均每隔5个P波为1周期,呈不同步,5:1传导。余P波后心搏脱落。QRS波群形态均呈室上性,R_(258)与P波无关,为交界性逸搏。ECG诊断:5:1传导、不同步的房室结双径路Ⅱ°传导阻滞并交界性逸搏。 讨论 双径路传导是由于房室交界处存在着功能或解剖不同的、纵向分离的快径路和慢径路两条通
Patient, male, 63 years old, with clinical diagnosis of coronary heart disease. ECG (with photos) showed P waves occur regularly, P-P interval 0.92 ~ 0.96 seconds, the frequency of 62 to 66 beats / min. R-R interval of two long one short, the elderly 1.68 seconds, the short 1.32 seconds, the frequency of 36 to 45 beats / min. There were two kinds of P-R interphase, P_ (1,6,11,16) -R interval was 0.17 second, P_ (4,9,14) -R interval was 0.36 second. The length of the P-R interval is every 5 P-wave for a period of unsynchronized, 5: 1 conduction. After P wave heartbeat off. The morphology of QRS complex was supraventricular. R 258 had no relation with P wave and was a borderline escape. ECG diagnosis: 5: 1 conduction, non-synchronized atrioventricular node dual pathway Ⅱ ° conduction block and junctional escape. Discussion Dual-path conduction is due to the existence of atrioventricular junction or anatomical differences, the vertical separation of the fast track and slow track two pass