Patent Ductus Arteriosus | Boston Children's Hospital in Children

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Patent ductus arteriosus is a congenital heart condition in which the ductus, a small opening or pathway between the pulmonary and aortic valves, remains open or patent. In most cases, the ductus closes within a day after birth. However, in patent ductus arteriosus, the ductus remains open, causing blood to mix between the two valves.

  • also known as PDA
  • sixth most common congenital heart defect
  • occurs twice as often in girls as in boys
  • if left untreated, can lead to a condition called pulmonary hypertension
  • surgery or cardiac catheterization common treatments for PDAs that don’t close on their own
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