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患者女性,20岁,以受凉后偶发心悸1天就诊。心电图Ⅱ导联连续记录(附图,见第102页):上行P_(1、2)为正常窦性激动,65次/分,P—R间期呈0.1秒;短阵心动过速时P波频率97次/分,其P波形态与窦性P波相同,部分伴有P-R间期逐渐延长,以P波脱漏而终止。窦性心律与心动过速P波之后的QRS波波形相同,宽0.11秒,起始部位有δ波。QRS波在V_1导联主波向下,V_5导联主波向上,心动过速每阵3～7个QRS波不等,突起突止,终止后间期可明显长于1个窦性间期ST-T无明显变化。心电图诊断:1.窦性心律,2.B型预激综合征,3.窦房结折返性心动过速,4.Ⅱ°—型房室传导阻滞。
Female patient, 20 years old, with occasional palpitations 1 day after treatment. ECG Ⅱ lead continuous record (with photos, see page 102): uplink P_ (1,2) for the normal sinus rhythm, 65 beats / min, P-R interval was 0.1 seconds; short pulse tachycardia P Wave frequency of 97 beats / min, its P wave morphology and sinus P wave the same, part of the PR interval with the gradual extension of P wave leakage termination. Sinus rhythm and tachycardia after the QRS wave P wave the same waveform, width 0.11 seconds, the initial part of the δ wave. QRS wave V_1 leads in the main wave down, V_5 leads the main wave upward, tachycardia per array of 3 to 7 QRS waves ranging from sudden protrusion, the termination of the interval may be significantly longer than an interval between the sinus ST -T no significant change. ECG diagnosis: 1. Sinus rhythm, 2. B-type pre-excitation syndrome, 3. Sinus node reentrant tachycardia, 4. Ⅱ ° - type atrioventricular block.