Transcatheter closure of congenital perimembranous ventricular septal defect using the Amplatzer duct occluder 2

The objective of this study was to explore the clinical effect of the transcatheter closure of congenital perimembranous ventricular septal defect using the Amplatzer duct occluder 2.

Between February 2012 and December 2016, 51 patients were subjected to Amplatzer duct occluder 2 for transcatheter closure of perimembranous ventricular septal defect. A total of 51 patients with perimembranous ventricular septal defect who underwent transcatheter closure by the conventional membranous ventricular septal occluder comprised the control group. The success rate and complications were compared, and indications of Amplatzer duct occluder 2 for perimembranous ventricular septal defect were explored.

The success rate of the interventional procedure was 98.0% (50/51) in the group of Amplatzer duct occluder 2 versus 100% in the group of conventional membranous ventricular septal occluder. The mean age of the patients of Amplatzer duct occluder group was 5.0±3.7 years (range: 1.5-25.0), and the mean weight was 19.3±8.1 kg (range: 11.0-52.0). The mean outlet diameter of the defects was 2.8±0.6 mm (range: 1.8-5.1) as measured by transthoracic echocardiography. The device was implanted by a retrograde approach in 40 patients and antegrade approach in 10 patients. No statistical significance was observed in the incidence of complication and hospitalisation duration between the two groups; however, the Amplatzer duct occluder 2 group was cost-effective (p<0.05) and required less fluoroscopy time (p<0.05). Neither deaths nor new onset of aortic and tricuspid insufficiency occurred during the median 26.2 months (range: 3-65) of follow-up.

Amplatzer duct occluder 2 has advantages of simple manipulation and less medical costs compared with conventional device in transcatheter closure of small type perimembranous ventricular septal defect.