目的探讨穿间隔法射频消融左侧前间隔旁道的有效性及安全性。方法选择9例左侧前间隔旁道患者,使用穿间隔法在主动脉瓣无冠瓣下与二尖瓣前叶间的纤维连接处标测到靶点进行射频消融。结果9例患者均消融成功。结论穿间隔法射频消融左侧前间隔旁道安全、有效。 Objective To explore the effectiveness and safety of trans-septal radiofrequency ablation of the left anterior septum. Methods Nine patients with left anterior segmentectomy were selected and radio-frequency ablation was performed by using the septum method to detect the target site through the fibrous connection between the aortic valve without aortic valve and the anterior mitral valve. Results All 9 patients were successfully ablated. Conclusion It is safe and effective to use the spacer method radiofrequency ablation of the left anterior septal bypass.