Hypoplastic Left Heart Syndrome booklet

Hypoplastic Left Heart Syndrome (HLHS) refers to underdevelopment of a tissue or organ. In HLHS, most of the left-sided heart structures is small, and the left ventricle, mitral valve, aortic valve and aorta are not fully developed. The left side of the heart does not pump enough bloody. 

HLHS can be diagnosed in utero with a fetal ultrasound, but may not be discovered until after birth. 

Our fetal heart team can diagnose and monitor HLHS during your pregnancy.