Outcomes of Transcatheter Closure in Outlet-Type Ventricular Septal Defect after 1 Year

Background: Ventricular septal defect (VSD) is the most common congenital heart disease. Transcatheter VSD closure is an effective treatment for patients with muscular and perimembranous VSD. However, there is a limit data for outlet VSD, especially impact to the aortic valve leaflet after transcatheter closure. This study aims to assess the outcomes of transcatheter closure of the outlet-type ventricular septal defect (OVSD) after 1 postopera-tive year. Methods: A retrospective study was performed including 50 patients who underwent transcatheter (n = 25) and surgical (n = 25) OVSD closure during the exact time frame at two medical centres. Results: The median age and body weight of patients in the transcatheter group were significantly higher than those of patients in the surgical group (7.0 vs. 2.8 years; 27.0 vs. 11.4 kg; p < 0.01). The defect size in the surgical group was significantly larger than that in the transcatheter group (5.0 vs. 3.0 mm; p < 0.01). All OVSD patients have successful transcath-eter closure (100%) as effective as surgical closure. Less than small residual shunt was present 20% and 8% imme-diately after the procedure in the transcatheter and surgical groups (p = 0.50), which decreased to 12% and 4% at the 1-year follow-up (p = 0.61), respectively. No incidence of complete atrioventricular block and other complica-tions was observed in both groups, and no significant differences were noted in the new onset or worsening of the aortic regurgitation in both groups (p = 1.0). Conclusions: Transcatheter treatment could be effectively and safely achieved for OVSD closure at 1-year follow-up.