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房室间旁道是最常见的心室预激。显性旁道为典型预激综合征,尚有部分为隐性旁道。50～80％患者并发反复的室上性心动过速(室上速)。近年来手术切断旁道取得彻底的治疗效果,故术前确定旁道位置有着重要的临床意义。经典的方法是在心电生理检查时将电极导管放置右房及冠状静脉窦内记录右房及左房电图,以判别旁道在房室环的游离壁或是间隔处。为了减少插入心腔内导管数,可采用食道电极导管代替定位,是本文小结经手术证实定位无误的病例所要说明的问题。
Atrioventricular bypass is the most common ventricular pre-excitation. The dominant side of the typical pre-excitation syndrome, there are some hidden pathways. 50% to 80% of patients with recurrent supraventricular tachycardia (supraventricular tachycardia). In recent years, surgical bypass to obtain a thorough treatment, so preoperative ascertainment of the location of the bypass has an important clinical significance. The classic method is to place the lead in the right atrium and the coronary sinus in the electrophysiological examination to record the right atrium and the left atrial electrical map to determine whether the bypass is at the free wall or at the compartment of the AV loop. In order to reduce the number of catheter inserted into the heart cavity, esophageal lead can be used instead of positioning, which is the summary of the cases confirmed by surgery.