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Abstract HOCM is a heterogeneous disease characterized by asymmetrically distributed left ventricular hypertrophy and LVOT obstruction. Dynamic LVOT obstruction is induced by thickening of the interventricular septum and SAM of the mitral valve. Several invasive therapeutic modalities have been developed to diminish outflow tract obstruction by reduction of the interventricular septum width. The most commonly performed intervention is surgical myectomy according to the technique developed by Morrow and his associates. Hypertrophic cardiomyopathy, however, frequently presents with several anatomic alterations of the mitral valve apparatus, including increased mitral leaflet area (MLA), length, and laxity, as well as anterior displacement of the papillary muscles. |