What is Atrial Septal Defect (ASD)?

Also known as: ASD, coronary sinus atrial septal defect

An Atrial Septal Defect is a heart condition that is present at birth due to abnormal development of the fetal heart during pregnancy. An ASD is a hole in the wall between the two upper chambers of the heart called the right and left atria.


Reviewed by: Anthony F. Rossi, MD

This page was last updated on: 1/29/2019 3:21:13 PM

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