When medical treatment is not enough to eliminate the symptoms of hypertrophic cardiomyopathy, surgery may be required. Septal myectomy is surgery to improve blood flow by thinning out the wall between the left and right side of the heart. Residual leaflet excision is a procedure to remove extra portions of the mitral valve that are blocking blood flow. Both surgeries are performed by highly experienced surgeons at NYU Langone's Hypertrophic Cardiomyopathy Program, who have performed more than 600 of these procedures. Learn more about surgical treatment for hypertrophic cardiomyopathy: https://nyulangone.org/conditions/hypertrophic-cardiomyopathy/treatments/septal-myectomy-surgery-for-hypertrophic-cardiomyopathy Learn more about NYU Langone's Hypertrophic Cardiomyopathy Program: https://nyulangone.org/locations/hypertrophic-cardiomyopathy-program Learn more about Dr. Daniel G. Swistel: https://nyulangone.org/doctors/1083603690/daniel-g-swistel