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Aortic Stenosis and Aortic Atresia
Introduction
Aortic stenosis (AS) affects 1.4 : 10,000 newborns. The spectrum of clinical manifestations varies widely according to the degree of valve stenosis.
Disease
Definition
AS and aortic atresia encompass a group of congenital heart diseases (CHDs) characterized by left ventricular outflow tract obstruction. Depending on the level of the defect, these are classified as supravalvular, valvular, or subaortic obstruction. Valvular stenosis is the most frequently found form in the fetus.
Prevalence and Epidemiology
AS accounts for 3% of all CHDs. There is a 15% recurrence risk, one of the highest among all forms of CHD.
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