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本文报告一例极少见的心电图。特点是一系列异位 P′—QRS—T,Ⅱ、Ⅲ、aVF、Ⅰ、Ⅴ_5导联 P′波倒置,aVR 导联 P′波直立,为逆行 P 波,P′—P′等于0.48s 到0.50s,P′波率为120次/min,P′—R 大于0.12s,等于0.14～0.16s,QRS 波形正常,符合非阵发性房性心动过速。长的异位 P′—P′间距等0.96～1.00s,恰好等于短 P′—P′间距的倍数,故存在Ⅱ度异位传出阻滞。同时可见 P′—R 间期逐渐延长,R—R 间期逐渐缩短,并随之出现一个长间期,所以有文氏Ⅱ度房室阻滞。还可以见到,介于窦性 P 波与房件 P′波之间形态的 P 波,为房性融合波。
This article reports a rare ECG. Characterized by a series of ectopic P’-QRS-T, Ⅱ, Ⅲ, aVF, Ⅰ, Ⅴ 5 lead P ’wave inversion, aVR lead P’ wave upright, retrograde P wave, P’-P ’is equal to 0.48s To 0.50s, P ’wave rate of 120 beats / min, P’-R greater than 0.12s, equal to 0.14 ~ 0.16s, QRS waveform normal, consistent with non-paroxysmal atrial tachycardia. Long ectopic P’-P ’spacing 0.96 ~ 1.00s, exactly equal to the short P’-P’ multiple, so there is the second-degree ectopic block. At the same time we can see P’-R interval gradually extended, R-R interval gradually shortened, followed by a long period of time, so there is Wen-degree Ⅱ atrioventricular block. Can also be seen, between the sinus P wave and the P shape of the P wave between the room for the fusion of atrial waves.