Long-term results of surgical valvuloplasty for congenital valvar aortic stenosis in children

Abstract

Background. To question the validity of surgical aortic valvuloplasty for congenital aortic valve stenosis, a retrospective study was undertaken to determine the long-term survival, the incidence of valve restenosis or insufficiency, and the freedom of reoperation or valve replacement. Methods. From January 1960 through 1992, 67 consecutive children diagnosed with congenital aortic valve stenosis underwent an open aortic valvuloplasty at our institution. Ages at operation ranged from 6 to 228 months (mean 105.7 ± 52 months). The mean follow-up of these patients has been 127.5 ± 66.7 months. Results. There was no hospital mortality, but two late valve-related deaths occurred. Eight patients developed aortic regurgitation 5 to 125 months (mean 66.6 ± 35 months) after surgical valvuloplasty, and 1 of them required aortic valve replacement. Because of restenosis, 16 patients required a second operation. Of them, 5 children underwent a second aortic valvuloplasty without mortality and, in 4 of them, the functional result has been excellent after a mean follow-up of 75.4 ± 12 months. Eleven patients required an aortic valve replacement 62 to 208 months postop (mean 100.9 ± 50.8 months). Mechanical prosthesis were used in 7 and bioprosthesis in 4. Two patients required a Konno and 1 required a Ross procedure. There were no early nor late deaths after reoperations. The probability of 20-year survival after the first valvuloplasty was 94%, the freedom of reoperation 63%, and the freedom of aortic valve replacement 73% for the same time period. Conclusions. Our results demonstrate that congenital aortic valvar stenosis in children can be surgically well controlled until adulthood. Our study also shows that surgical valvuloplasty is a safe and efficacious procedure and that its benefical effect is maintained over 20 years in the majority of children.