以单导管法对3例体表心电图有delta波的预激综合征患者行射频消蚀。据心电图定位旁路后,将一根消蚀导管经右股动脉插入左室,在二尖瓣环左室侧标测到旁路电位后以该导管放电,全部成功。平均放电5次,平均操作时程1.3小时。本观察提示,单导管是消蚀部分显性预激患者房室旁路的简便、安全和有效的方法。 Three patients with pre-excitation syndrome with delta wave on body surface electrocardiogram underwent single-catheter radiofrequency ablation. According to the ECG positioning bypass, an erosive catheter inserted into the left ventricle through the right femoral artery, left ventricular in the mitral annulus marked by the bypass potential to the catheter discharge, all successful. Average discharge 5 times, the average operating time of 1.3 hours. This observation suggests that a single catheter is a simple, safe and effective method of ablating atrioventricular bypass in some patients with dominant pre-excitation.