Preferred Label : hypoplastic left heart syndrome;
Definition : Hypoplastic left heart syndrome occurs when parts of the left side of the heart (mitral
valve, left ventricle, aortic valve, and aorta) do not develop completely. The condition
is present at birth (congenital). [NLM];
Hypoplastic left heart syndrome occurs when parts of the left side of the heart (mitral
valve, left ventricle, aortic valve, and aorta) do not develop completely. The condition
is present at birth (congenital). [NLM]