Jan 21, 2025 · Hypoplastic left heart syndrome (HLHS) happens in the womb when a baby's heart develops. The cause isn't known. Gene changes may play a role. In hypoplastic left heart syndrome, …

Dec 14, 2025 · Hypoplastic (pronounced hi-puh-PLAS-tik) left heart syndrome or HLHS is one type of congenital heart defect. Congenital means present at birth. HLHS prevents normal blood flow …

Aug 8, 2024 · Hypoplastic left heart syndrome (HLHS) is a severe congenital heart defect in which the left side of the heart is underdeveloped.

Jul 29, 2022 · Hypoplastic left heart syndrome is a condition present at birth. In a baby with HLHS, their heart’s left side is underdeveloped, and blood can’t flow normally.

Hypoplastic left heart syndrome consists of hypoplasia of the left ventricle and ascending aorta, maldevelopment and hypoplasia of the aortic and mitral valves (frequently aortic atresia is present), …

^ Definition: hypoplasia. Dictionary of Cell and Molecular Biology (11 March 2008) ^ Hypoplasia. Stedman's Medical Dictionary. lww.com.

Sep 4, 2025 · Hypoplasia is when organs or tissues have fewer than the average number of cells and cells that are underdeveloped. This condition can affect any part of the body.

In a child with hypoplastic left heart syndrome, the structures on the left side of the heart are very underdeveloped. The mitral and aortic valves are either completely "atretic" (closed), or they are …

The meaning of HYPOPLASTIC is of, relating to, or marked by hypoplasia.

Hypoplastic left heart syndrome (HLHS) is a birth defect of a baby’s heart. The left side of the heart doesn’t grow as it should, making it smaller and weaker than normal.