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患者男性,72岁,临床诊断:冠心病,心律失常。心电图aVF导联连续记录(附图)示P波规则出现,P-P间距1.08秒。P波与QRS波完全无关,为窦性心动过缓、完全性房室传导阻滞。值得注意的是有两种不同形态的室性异位搏动交替出现,经分析都是间歇性并行心律;一、QRS波振幅较大的E_2自身节律为37次/分(R_1-R_3=1.60秒),R_2、R_6均较早出现,适逢E_2的3相传入阻滞保护期,未打乱E_2的自身节律。而R_4、R_8出现较晚,E_2已失去保护性传入阻滞,故侵入E_2并使其重建周期,重建的周期R_4-R_5恰等于E_2的基本周期:二、QRS波振幅较小
Male patient, 72 years old, clinical diagnosis: coronary heart disease, arrhythmia. ECG aVF lead continuous record (with photos) P wave rules appear, P-P pitch 1.08 seconds. P wave and QRS wave has nothing to do, as sinus bradycardia, complete atrioventricular block. It is noteworthy that there are two different forms of ventricular ectopic beating alternately, the analysis is intermittent parallel heart rhythm; one, QRS amplitude greater E_2 own rhythm 37 beats / min (R_1-R_3 = 1.60 seconds ), R_2 and R_6 all appeared earlier, which coincided with the phase 3 of E_2 being introduced into the blockade protection period without disturbing the self-rhythm of E_2. However, R_4 and R_8 appeared later and E_2 had lost protective block, so E_2 was invaded and reconstructed. The reconstructed period R_4-R_5 exactly corresponded to the basic period of E_2.