hypoplastic left heart syndrome https://www.malacards.org/card/hypoplastic_left_heart_syndrome Orphanet:2248 prototype_pattern HLHS NANDO:1200705 NANDO:2100071 NCIT:C98894 NORD:1277 OMIMPS:241550 MESH:D018636 SCTID:62067003 DOID:9955 MedDRA:10021076 ICD9:746.7 icd11.foundation:1811800027 MEDGEN:57746 GARD:0006739 UMLS:C0152101 Hypoplastic left heart syndrome (HLHS) refers to the abnormal development of the left-sided cardiac structures, resulting in obstruction to blood flow from the left ventricular outflow tract. In addition, the syndrome includes underdevelopment of the left ventricle, aorta, and aortic arch, as well as mitral atresia or stenosis. ICD10CM:Q23.4 MONDO:0004933 NANDO:2200249 congenital left-sided heart lesions univentricular cardiopathy cardiogenetic disease syndromic congenital heart disease