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Aetiology

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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This condition is sporadic in most cases.

However, the following associations have been noted:

  • Down's syndrome - particularly atrioventricular canal
  • Holt-Oram syndrome - particularly secundum defect
  • Ellis-van Creveld
  • maternal atrial septal defect may be inherited by daughters

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