Hypoplastic Left Heart Syndrome
Brief overview What is hypoplastic left heart syndrome (HLHS)? A severe congenital heart defect in which the left ventricle and the part of the aorta branching off from it are underdeveloped. In addition, the heart valves of the left side of the heart are narrowed or closed. Sometimes other defects accompany hypoplastic left heart syndrome. … Hypoplastic Left Heart Syndrome