目的评价在心内射频消融中应用经胸二维超声心动图(TTE)作为影像学引导电极导管到位的可行性、安全性、有效性。方法10例持续性、永久性房颤患者和1例房扑患者以TTE作为影像学指导电极导管置放、靶点标测。结果TTE对10例患者成功引导了房室结阻断术并植入心脏永久起搏器,对1例患者成功实现了房扑消融。结论TTE可成功作为影像学指导,部分或全部替代X线透视引导心内射频消融术。 Objective To evaluate the feasibility, safety and effectiveness of transthoracic two-dimensional echocardiography (TTE) as a radiographic guide electrode for radiofrequency catheter ablation in the heart. Methods Ten patients with persistent and permanent atrial fibrillation and one patient with atrial flutter were treated with TTE as imaging guidance catheter and target detection. Results TTE successfully guided the atrioventricular node block and implantation of pacemaker in 10 patients. Atrial fibrillation was successfully achieved in 1 patient. Conclusion TTE can be used successfully as an imaging guide to guide the partial or total replacement of radiofrequency ablation with fluoroscopy.