Pulmonary valve stenosis is a condition in which a deformity on or near your pulmonary valve narrows the pulmonary valve opening and slows the blood flow. The pulmonary valve is located between the lower right heart chamber (right ventricle) and the pulmonary arteries. Adults occasionally have pulmonary valve stenosis as a complication of another illness, but mostly, pulmonary valve stenosis develops before birth as a congenital heart defect.


Pulmonary valve stenosis ranges from mild and without symptoms to severe. Mild pulmonary stenosis doesn't usually worsen over time, but moderate and severe cases may worsen and require surgery. Fortunately, treatment is generally highly successful, and most people with pulmonary valve stenosis can expect to lead normal lives.

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