What Is Hypoplastic Left Heart Syndrome (HLHS)? – The Children’s Hospital of Philadelphia (2 of 6)

Hypoplastic left heart syndrome (HLHS) is a left-sided heart anomaly. CHOP cardiologists give an anatomy and physiology primer of the normal fetal heart. Hypoplastic Left Heart Syndrome is a common congenital defect that involves an underdeveloped left ventricle.

Surgery – Hypoplastic Left Heart Syndrome – HLHS – The Children’s Hospital of Philadelphia (5 of 6)

Hypoplastic Left Heart Syndrome (HLHS) is a common congenital heart defect that involves an underdeveloped left ventricle. HLHS commonly requires three stages of surgery; at birth, at 3-6 months and at 2-3 years of age. The Norwood procedure and the Fontan operation are done at different stages of development.