OBSTRUCTION TO LEFT VENTRICULAR OUTFLOW. CURRENT CRITERIA FOR THE SELECTION OF PATIENTS FOR OPERATION.
D000293:Adolescent; D001024:Aortic Valve Stenosis; D006328:Cardiac Catheterization; D006348:Cardiac Surgical Procedures; D002648:Child; D006321:Heart; D006354:Heart, Artificial; D006801:Humans; D013903:Thoracic Surgery
ADOLESCENCE; AORTIC VALVE STENOSIS; CHILD; HEART CATHETERIZATION; HEART SURGERY; HEART, MECHANICAL