[Results following surgery of fibrous subvalvular aortic stenosis in childhood and adolescence].

From 1963 up to the end of June 1974 32 patients were operated on for fibrous subvalvular aortic stenosis in Leipzig (age at operation 6-17 years). 18 patients had concomitant cardiovascular malformations, 4 patients died. The results are discussed in detail. Contrary to other publications the authors adopt the attitude that the operation in subvalvular stenosis is to be recommended even with gradients as low as 50 mm Hg, particularly when haemodynamically significant concomitant malformations are present. Therefore, the measuring of the left ventricular pressure and the localisation of the stenosis by intracardiac diagnostics should be performed not too late. It may be possible that the measuring of the left ventricular pressure must be repeated some years later. Also for the exact evaluation of the post-operative results recatheterisations are necessary.