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atrioventricular septal defect

atrioventricular septal defect is an opening between all four chambers of the heart that is present at birth (congenital heart disease). the opening is caused by a failure of heart tissue to come together during the growth of the fetus.

atrioventricular septal defect results in a large opening in the centre of the heart, with a hole between the 2 lower chambers (ventricular septal defect) and between the 2 upper chambers (atrial septal defect).

atrioventricular septal defect requires surgery to correct.

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