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Medical Definition of Atresia, aortic

Atresia, aortic: Congenital absence of the normal valvular opening from the left ventricle of the heart into the aorta.

"Atresia" here refers to the absence of a normal opening.

Source: MedTerms™ Medical Dictionary
https://www.medicinenet.com/script/main/art.asp?articlekey=16254
Last Editorial Review: 9/14/2016

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