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Ann Thorac Surg 2001;71:1564-1571
© 2001 The Society of Thoracic Surgeons
a Department of Cardiac Surgery, Klinikum Grosshadern, Ludwig-Maximilians-University, Munich, Germany
Accepted for publication December 13, 2000.
Address reprint requests to Dr Detter, Department of Cardiac Surgery, Klinikum Grosshadern, Ludwig-Maximilians-University, D-81366 Munich, Germany
e-mail: cdetter{at}hch.med.uni-muenchen.de
Background. The purpose of the study was to analyze the long-term results of aortic valvotomy and the risk factors associated with reoperation and survival.
Methods. From 1960 to 1977, 116 patients with congenital valvular aortic stenosis underwent isolated aortic valvotomy at a mean age of 13.7 ± 7.8 years with a mean aortic gradient of 78 ± 33 mm Hg. Fifteen patients had additional aortic regurgitation, and leaflet calcification was present in another 15 patients.
Results. Postoperatively the mean aortic gradient decreased to 19.4 ± 11.3 mm Hg (p < 0.0001). Early mortality was 2.6%. At a mean follow-up of 23.8 years, 26 late deaths (22.4%) occurred among the 113 early survivors. Actuarial 10-, 20-, 30-, and 37-year survival rates were 94.6%, 79.7%, 76.2%, and 72.5%, respectively. According to multivariate Cox regression analysis, survival was influenced by preoperative New York Heart Association class (p = 0.0418), leaflet calcification (p = 0.0339), date of operation (p = 0.0253), and postoperative endocarditis (p < 0.0001). At a mean interval of 18.3 years, 37 patients required reoperation (31.9%) mainly because of recurrent aortic stenosis. The reoperation rate increased significantly 15 years postoperatively from 0.73%/year to 2.31%/year (p < 0.0001). In a multivariate risk model, reoperation was influenced by older patient age (p = 0.0032) and the presence of leaflet calcification (p = 0.0289).
Conclusions. Aortic valvotomy is a simple and effective procedure for congenital aortic stenosis with excellent long-term results. However, the rate of reoperation increases 15 years postoperatively, and clinical follow-up should be intensified. Our results suggest that early repair should be performed and that adequate patient selection is the most important determinant of the long-term results.
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