Combined anterior mitral valve leaflet retention plasty and septal myectomy in patients with hypertrophic obstructive cardiomyopathy

Objectives: Septal myectomy is the treatment of choice for patients with hypertrophic obstructive cardiomyopathy (HOCM) with significant left-ventricular outflow tract (LVOT) obstruction. In some HOCM patients, however, systolic anterior motion (SAM) of the anterior mitral leaflet significantly contributes to LVOT obstruction, resulting in mitral regurgitation and insufficient release of the obstruction after myectomy. We, therefore, developed a...