Congenital Heart Defects: What Increases Your Risk


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What Increases Your Risk


In most cases, the cause of a congenital heart defect is not known. But certain things increase your baby's chances of developing a heart defect.

  • Family history: A child's risk for having a congenital heart defect increases if a brother, sister, or parent has one.
  • Other genetic conditions: For example, Down syndrome has been linked to congenital heart defects.1
  • Premature birth: Babies born too early have a higher chance of having a congenital heart defect.
  • Chronic conditions: Babies born to women with diabetes or phenylketonuria have a higher chance of having a congenital heart defect.

Women who plan to become pregnant and women who are pregnant can lower their risk of having a baby with a congenital heart defect by taking steps to have a healthy pregnancy.



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Last updated: October 25, 2007
Author: Robin Parks, MS
Reviewed By: Michael J. Sexton, MD - Pediatrics, Larry A. Latson, MD - Pediatric Cardiology
Editors: Kathleen M. Ariss, MS, Pat Truman, MATC

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