hypertrophic subaortic stenosis

hypertrophic subaortic stenosis
idiopathic hypertrophic subaortic stenosis (IHSS) a form of hypertrophic cardiomyopathy in which the left ventricle is hypertrophied (commonly with disproportionate involvement of the interventricular septum) and the cavity is small; it is marked by obstruction to left ventricular outflow. Called also muscular subaortic s.

Medical dictionary. 2011.

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