Aortic stenosis

Aortic valve stenosis (AS) is a valvular heart disease caused by the incomplete opening of the aortic valve.The aortic valve controls the direction of blood flow from the left ventricle to the aorta. When in good working order, the aortic valve does not impede the flow of blood between these two spaces. Under some circumstances, the aortic valve becomes narrower than normal, impeding the flow of blood. This is known as aortic valve stenosis, or aortic stenosis, often abbreviated as AS.
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Aortic stenosis n. Abbr. AS Pathological narrowing of the orifice of the aortic valve. Aortic stenosis A stiffening of the artery which carries [more]Aortic stenosis - Community and Resources

Noun
1. abnormal narrowing of the aortic valve
(hypernym) stenosis, stricture

Narrowing (stenosis) of the valve between the left ventricle of the heart and the aorta, impeding the delivery of blood via the aorta to the body.

adjective
referring to the aorta
aortic arch = bend in the aorta which links the ascending aorta to the descending
aortic aneurysm = serious aneurysm of the aorta, associated with atherosclerosis
aortic hiatus = opening in the diaphragm through which the aorta passes
aortic incompetence = defective aortic valve, causing regurgitation
aortic regurgitation = backwards flow of blood caused by a defective aortic valve
aortic sinuses = swellings in the aorta from which the coronary arteries lead back into the heart itself
aortic stenosis = condition where the aortic valve is narrow, caused by rheumatic fever
aortic valve = valve with three flaps, situated at the opening into the aorta