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Pulmonary valve stenosis

  • Definition

    Pulmonary valve stenosis is a heart valve disorder that involves the pulmonary valve.

    This valve separates the right ventricle (one of the chambers in the heart) and the pulmonary artery. The pulmonary artery carries oxygen-poor blood to the lungs.

    Stenosis occurs when the valve cannot open wide enough. As a result, less blood flows to the lungs.


    Alternative Names

    Valvular pulmonary stenosis; Heart valve pulmonary stenosis; Pulmonary stenosis; Stenosis - pulmonary valve; Balloon valvuloplasty - pulmonary


    Causes, incidence, and risk factors

    Narrowing in the pulmonary valve is usually present at birth (congenital). It is caused by a problem that occurs when the unborn baby (fetus) is developing. The cause is unknown, but genetics may play a role.

    Narrowing that occurs in the valve itself is called pulmonary valve stenosis. There may also be narrowing just before or just after the valve.

    The defect may occur alone or with other congenital heart defects. The condition can be mild or severe.

    Pulmonary valve stenosis is a rare disorder.