Objective To analyze conduction the occurrence and prognosis of blockade after transcatheter closure of perimembranous ventricular septal defect(PMVSD).
目的分析经导管膜周部室间隔缺损（PMVSD）封堵术后传导阻滞发生及转归情况。
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Conclusion: Transcatheter closure of perimembranous ventricular septal defects with self-made nitinol occluder in children is a safe and effective method.
Objective To investigate the type of tricuspid regurgitation of perimembranous ventricular septal defect and to evaluate the occlusion efficiency using ultrasonic echocardiography.