or below the aortic valve as in hypertrophic obstructive cardiomyopathy (HOCM) or subvalvular aortic stenosis (SAS; often caused by a thin, crescent-shaped subvalvular membrane). (Devabhaktuni SR ...

DAVID MONTGOMERY: Aortic stenosis is a tightening of one of the four major valves of the heart. The aortic valve is particularly important because the aortic valve is the gateway to the rest of ...

Aortic stenosis (AS) occurs when the orifice of the aortic valve is significantly reduced due to the failure of the aortic valve leaflets to open fully during systole. This causes an effective ...