Between 1977 and 1992 at the Cardiosurgical Clinic of the Faculty Hospital in Hradec Králové on account of congenital valvular aortic stenosis 142 patients were subjected to catheterization. Valvotomy of a stenotic aortic valve was performed in 69 patients. The submitted paper evaluates the progression of aortic stenosis based on investigations of the aortic gradient and the area of the aortic orifice in repeatedly catheterized patients before and after valvotomy and evaluates also the results of surgery after a 1-15-year interval after surgery.
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