Pulmonary atresia (with intact septum)

Pulmonary atresia (with intact septum)

Pulmonary atresia (with intact septum) is a heart defect present at birth with two main differences from a normal heart:

  • The valve which allows blood to flow from the heart to the lungs – the pulmonary valve – is completely blocked, and
  • The main pumping chamber on the right side – the right ventricle – has not developed normally.
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