Abstract
Supravalve mitral ring (SVMR) is an extremely rare form of congenital left ventricular inflow obstruction in which a left atrial membrane causes an obstruction keeping the left atrium from emptying into the left ventricle. Cardiac catheterization and angiography are not reliable means to diagnose this lesion. Transthoracic echocardiography (TTE) has proved to be the most sensitive tool for diagnosis of this form of left ventricular inflow obstruction; however, its diagnostic accuracy has been recently questioned. We report the complementary roles of TTE and transesophageal echocardiography in a case of SVMR in an adult patient. (ECHOCARDIOGRAPHY, Volume 11, May 1994)
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