Objective: To investigate the methods of selecting different shape occluders and to evaluate effect in transcatheter closures of congenital ventricular seplal defect (VSD) in children.
Methods: Transcatheter closures were performed in 150 childrens with congenital VSD during May,2004 to July,2007, under the guidance of transthoracic echocardiography (TTE). There were 4 patients with intracfistal VSD, 143 patients with perimembranous VSD and 3 patients below aortic valve VSD.
Left ventriculography and TTE were performed repeatedly after the procedure to assess the effect of occlusion. TTE, X-ray and electrocardiography (ECG) were scheduled 24 hours, 1, 3, 6, l2 months after closed in follow-up.
Results: The occluders were deployed successfully in 126 patients. The successful rate of operation was 84%. Thin waist shape occluders were deployed in 7 patients;equal side shape occluders were deployed in 114 patients; eccentric shape occhders were deployed in l2 patients. There were 2 patients with residual shunt, that disappeared in third month of follow-up. There was no cardiac arrhythmia after closure.
Condusions: Transcatheter closure of VSD is an effective and safety treatment in children with VSD. It is very important in selecting different shape occluders according to anatomy and pathologic characteristics. In general, equal side shape occluder is suitable for a large number of VSD patients. In some conditions,the other shape occluder may be considered for selection.
Key words: ventricular septal defect,transcatheter closure,occluder,curative effect.