Management of severe aortic valve stenosis in the neonate

Abstract

Management of severe aortic valve stenosis in the neonateAS may occur in isolation, or in association with other congenital cardiac defects. These include other left heart obstructive lesions in Shone association and the hypoplastic left heart syndrome (HLHS) as well as septal defects. It may also occur with extra-cardiac malformations of the renal, gastrointestinal and central nervous systems.(5) The LVOTO is mainly at the level of the annulus (70%) but may also occur at sub-valvar or supra-valvar levels. EMBRYOLOGY OF THE SEMI-LUNAR VALVESThe semi-lunar valves develop from the fourth week of gestation.