1. Biology Dictionary
  2. Atrioventricular septal defect

Atrioventricular septal defect

Definition:

Atrioventricular septal defect, also known as atrioventricular canal defect or endocardial cushion defect, is a congenital heart malformation involving the interatrial septum, interventricular septum, and atrioventricular valves. The defect is often associated with Down syndrome (trisomy 21).

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