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Definition of Septal defect, atrial (ASD)

Septal defect, atrial (ASD): A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD. ASDs are a major class of heart deformity that is present at birth (congenital cardiac malformation).

QUESTION

In the U.S., 1 in every 4 deaths is caused by heart disease. See Answer

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