Discrete Membranous Sub-Aortic Stenosis in Adult Patient Obtained by Echocardiography and Not Proved by Catheterization

Grenadier, Ehud; Keidar, Shiomo; Alpan, Gad; Milo, Simba; Palant, Avraham
December 1982
Angiology;Dec1982, Vol. 33 Issue 12, p800
Academic Journal
A case of a 60-year-old patient with discrete membranous sub-aortic stenosis is described. The diagnosis was established based 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.


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