Pulmonary Valve Stenosis—Child

(Pulmonary Stenosis—Child)

Definition

Pulmonary valve stenosis is when the pulmonary valve is thickened or can't open fully.The heart pumps blood out of the right side of the heart, through the pulmonary valve, to the lungs. When this valve is not working properly, it can decrease the amount of blood going to the lungs for oxygen or increase the work the heart muscle has to do to maintain it. Blood can also back up into the heart. The condition can be mild to severe.
Heart Chambers and Valves
heart anatomy
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Blood Flow Through the Heart
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Copyright © Nucleus Medical Media, Inc.

Causes

Pulmonary stenosis is caused by abnormal development of the heart valve before birth. In most cases, it is not known exactly why it happens.

Risk Factors

Factors that may increase the risk of pulmonary valve stenosis may include:
  • Family history of congenital heart defect
  • Certain chromosomal disorders
  • Other heart defects
  • Previous pregnancy with fetal heart abnormalities or miscarriage
  • Being infected with a virus during pregnancy
  • Maternal smoking during pregnancy

Symptoms

Symptoms may include:
  • Heavy or rapid breathing
  • Shortness of breath
  • Blue or pale grayish skin color
  • Fatigue
  • Rapid heart rate
  • Swelling of the feet, ankles, eyelids, and abdomen
  • Urinating less

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