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房室交界区的交替性逆行传导表现为心室至心房的逆行传导时间长短交替,是一种罕见的心律失常。现将我院近期内遇到的2例介绍如下。 [例1]风心病患者,女性,49岁,有甲亢及房颤史,图1为房颤消失后的一次心电图记录。Ⅱ导联为房室交界区逸搏心律,心率46～50次/分,稍有不齐。每个正常形态的QRS波后都有逆行P波,R-P间期固定为0.11秒。V_1导联中逆行P波开始部分为浅倒形,随后呈尖峰状,其R-P间期长短交替,短者同Ⅱ导联,长者约为0.24秒。在aVF导联,仅一
Atrioventricular junctional area of the alternating retrograde conduction performance of the ventricle to the atrial retrograde conduction time length is a rare arrhythmia. Now in our hospital encountered two cases described below. [Example 1] patients with rheumatic heart disease, women, 49 years old, have a history of hyperthyroidism and atrial fibrillation, Figure 1 shows an ECG after the disappearance of atrial fibrillation. Ⅱ lead for the atrioventricular junction area escape rhythm, heart rate 46 ~ 50 beats / min, slightly missing. There was a retrograde P wave after each QRS wave of normal morphology, with a fixed R-P interval of 0.11 seconds. V_1 lead in the beginning of the retrograde P wave was inverted inverted, followed by a sharp peak, the R-P interval alternating short, short lead with Ⅱ, the elderly about 0.24 seconds. In aVF lead, only one