title: Discrete membraneous sub-aortic stenosis in adult patient obtained by echocardiography and not proved by catheterization.
abstract: A case of a 60-year-old patient with discrete membranous sub-aortic stenosis is described. The diagnosis was established bases on echocardiographic evaluation by demonstration of a premature aortic valve closure and a sub-aortic membrane. No evidence of the sub-aortic membrane was noticed on cardiac catheterization. At operation, a discrete sub-aortic membrane was found 9 mm below the aortic valve, leaving an aperture of 1 cm diameter and a mildly deformed stenotic aortic valve. We stress the importance of careful pre-operative echocardiographic evaluation of every patient suspected of having any kind of left ventricular outflow tract obstruction, even if catheterization data are not contributory.
mesh_terms: D001014:Aortic Aneurysm / Q000150:complications / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D002037:Bundle-Branch Block / Q000150:complications / Q000175:diagnosis; D006328:Cardiac Catheterization; D004452:Echocardiography; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008566:Membranes / Q000473:pathology; D008875:Middle Aged