Overview

Tricuspid atresia is a heart defect present at birth (congenital) in which a valve (tricuspid valve) between two of the heart's chambers isn't formed. Instead, there's solid tissue between the chambers, which restricts blood flow and causes the right lower heart chamber (ventricle) to be underdeveloped.

A baby, child or adult with tricuspid atresia can't get enough oxygen through its body. People with this condition tire easily, are often short of breath and have blue-tinged skin.

Tricuspid atresia is treated with multiple surgeries. Most babies with tricuspid atresia who have surgery live well into adulthood, though follow-up surgeries are often needed.