[Reconstructive surgery of idiopathic hypertrophic subaortic stenosis with dynamic obstruction of the left ventricular outflow tract causing severe mitral insufficiency].

Hypertrophic obstructive cardiomyopathy (HOCM) is an idiopathic disease frequently associated with systolic anterior motion (SAM). The anterior leaflet of mitral valve is sucked by Ventury effect into the left ventricle outflow tract making subaortic stenosis more severe and producing mitral insufficiency at the same time. Septal myectomy along with mitral valve replacement has been the treatment of choice for a long time. An understanding of pathoanatomy and hemodynamics of the disease has opened possibility for total reconstructive treatment of both subaortic stenosis and mitral insufficiency in such patients. This is a case report of 50-year-old male with severe subaortic stenosis (136/70 mmHg) due to HOCM and SAM along with grade IV mitral insufficiency. Septal myectomy was performed. Mitral insufficiency was managed by reducing the height of posterior cusp along with remodeling of mitral annulus by Carpentier-Classic ring. In that way, subaortic obstruction was reduced to 30.9/10 mmHg while mitral insufficiency was lowered to negligible level. The patient was discharged from hospital with sinus rhythm eight days after the surgery.