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[Feasibility and effectiveness of percutaneous ventricular septal defect closure under solely guidance of echocardiography].

Objective: To compare the efficacy and safety of percutaneous ventricular septal defect (VSD) closure under solely guidance of echocardiography and fluoroscopy. Methods: The retrospective study was conducted at Fuwai Hospital, between February 2014 and February 2015. The patients were divided into two groups. VSD closure was conducted in 42 patients under solely guidance of echocardiography, and 100 patients who were treated with percutaneous catheter closure under fluoroscopy guidance were selected as a control group. The baseline characteristics, procedural time and complications were recorded and assessed. Results: There were no significant differences in terms of age, gender and pre-operative echocardiographic characteristics (all P >0.05). Percutaneous VSD closure under traditional fluoroscopy guidance was successful in 95 patients (95%). The procedural time was (54.7±12.5) minutes. The symmetrical occluders diameter was (6.9±1.8) mm. Four patients had postoperative residual shunt, one patient developed left bundle branch block, and 6 patients developed new tricuspid regurgitation. Percutaneous VSD closure under only transthoracic echocardiography (TTE) guidance was successful in 39 patients (93%). Because of delivery catheter passage failure through the defect, one case required conversion to perventricular closure via a small transthoracic incision under transesophageal echocardiography (TEE) guidance. The other two cases underwent surgical repair because of residual shunt with more than 2 mm after closure. The procedural time was (40.3±13.2) minutes. The symmetrical occluders diameter was (6.5±1.2) mm. Four patients had postoperative residual shunt that disappeared after 1 month follow-up, and one patient developed right bundle branch block which disappeared 3 days later. During (9.3±3.6) months follow-up, there were no other complications, such as pericardial effusion, occluder malposition, atrioventricular block, aortic valve regurgitation, and aggravating tricuspid regurgitation in each group. However, the total operation time, diameter of VSD occluder, total mild complications, and the equipment cost in the study group were less than that in the control group ( P <0.05). Conclusion: Percutaneous VSD closure can be successfully performed under sole guidance of echocardiography with outcomes similar to those achieved with fluoroscopy guidance.

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