Aortic Stenosis
Also written as: AS — Aortic Stenosis
A congenital heart defect involving narrowing of the aortic valve or surrounding structures, restricting blood flow from the left ventricle to the systemic circulation.
Full Definition
Congenital aortic stenosis is an obstruction to left ventricular outflow that can occur at the valvular, subvalvular, or supravalvular level. Valvular aortic stenosis, the most common form, typically involves a bicuspid aortic valve or valve fusion. The condition can range from mild to critical, with severe cases in neonates presenting as a medical emergency requiring immediate intervention. Symptoms may include exercise intolerance, chest pain, and syncope in older children. Treatment options depend on the severity and level of obstruction, ranging from balloon valvuloplasty to surgical valve replacement or repair.
Usage
Usage note: Commonly abbreviated as AS. Distinguish between congenital and acquired forms in patient documentation.
In Context
- "Critical aortic stenosis in the neonate required emergent balloon aortic valvuloplasty." — Neonatal intensive care unit report
- "The bicuspid aortic valve was associated with mild aortic stenosis and trace regurgitation." — Pediatric cardiology follow-up note