Underdevelopment of the left side of the heart. May include atresia of the aortic or mitral orifice and hypoplasia of the ascending aorta.
Comment:
Hypoplastic left heart syndrome is an unsatisfactory term describing lethal underdevelopment of the left ventricle (LV). It represents the more severe end of a spectrum of LV hypoplasia, mandating single-ventricle palliation or cardiac transplantation. Less severe borderline ventricular hypoplasia may instead allow various biventricular therapeutic strategies and better long-term outcomes.
Synonyms:
exact_synonym:
Heart left ventricle hypoplasia; Left ventricular hypoplasia; Underdeveloped left heart