General description of procedure, equipment, technique Symptomatic hypertrophic cardiomyopathy (HCM) is due to significant obstruction to flow in the left ventricular outflow tract (LVOT). This obstruction results from a thickened interventricular septum (IVS) and systolic anterior motion (SAM) of the mitral valve (most commonly the anterior mitral apparatus). Mitral regurgitation resulting from SAM also contributes…
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