​What is Pulmonary Stenosis?

Also known as: pulmonary valve stenosis

When the heart squeezes ( contracts ), the pulmonary valve controls the flow of blood from the right side of the heart ( right ventricle ) out to the lungs. When this valve is defective, it doesn’t open fully and partially blocks the flow of blood because two of its three sections are stuck together or are too thick. This is  known as pulmonary stenosis.

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Reviewed by: Jack Wolfsdorf, MD, FAAP

This page was last updated on: 1/29/2019 3:21:13 PM