Abstract: AIM: To evaluate the efficiency of transcatheter closure of ventricular septal defects (VSD). METHODS: Two patents were treated by transcatheter closure.The cases of VSD were confirmed by transesophageal echocardiography (TEE) before treatment.Two cases were treated using occluder device through the percutaneous procedure under fluoroscopy and TEE.After the procedure, TEE and fluoroscopy were performed immediately to find whether any residual shunt was remained. RESULTS: Values of the occluder diameter selected were 4 and 6mm in the two cases, respectively.No complications occurred during the procedure, and no residual shunt and recanalization were found after 24 h and 1 mon. CONCLUTION: Transcatheter closure of VSD using the occluder is an efficient microinvasive method, but further results will obtain from a long term observation.

Key words: ventricular septal defects, transcatheter closure, congenital heart disease