Muscular subaortic stenosis: the quantitative relationship between systolic anterior motion and the pressure gradient.

Abstract

We performed simultaneous echocardiographic and hemodynamic studies in 11 patients with muscular subaortic stenosis to determine whether systolic anterior motion (SAM) of the anterior mitral leaflet and the pressure gradient are related quantitatively. SAM without septal contact was associated with either no gradient or a small impulse gradient of less than… (More)

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