Pulmonary atresia

Definition

Pulmonary atresia is an extremely rare form of congenital heart disease. It involves severe narrowing or complete obstruction of the pulmonary valves (the valves at the outlet of the right ventricle).

Causes, incidence, and risk factors

Pulmonary atresia is associated with a patent ductus arteriosus. There is no known cause of Pulmonary atresia.

Illustrations

Heart, section through the middle

Heart, front view

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