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具有房室旁道的病人,常出现心电图异常及心律失常。在窦性节律时,旁道的前向传导在 QRS波中产生δ波;在心房颤动或心房扑动时,激动可前向传导到心室。如旁道仅能逆向传导,在窦性节律时无心电图异常,在房室折返性心动过速时激动可以逆向传导。对既能前向又能逆向传导的旁道和仅有逆向传导的旁道,已有广泛研究。但关于仅能前向传导旁道的研究甚少。本文报道仅能前向传导的旁道患者的临床特征和电生理特性。
With atrioventricular bypass of patients, often ECG abnormalities and arrhythmias. In sinus rhythm, the anterior conduction of the bypass produces a delta wave in the QRS wave; in atrial fibrillation or atrial flutter, the activation can be transmitted anteriorly to the ventricle. If the bypass can only reverse conduction, no abnormal ECG in sinus rhythm, in the atrioventricular reentrant tachycardia can reverse conduction. Extensive studies have been conducted on bypassing that can be both forward and reverse and only reverse-conducting bypass. However, little research has been done on the bypass that can only be conducted in the forward direction. This article reports the clinical features and electrophysiological characteristics of patients who can only be transduced in the anterior aspect.