Aortic commissurotomy.
D001011:Aorta; D001021:Aortic Valve; D001024:Aortic Valve Stenosis; D006348:Cardiac Surgical Procedures; D003251:Constriction, Pathologic; D006801:Humans; D008943:Mitral Valve; D008946:Mitral Valve Stenosis
AORTIC VALVE/stenosis; MITRAL VALVE/stenosis