- aortic stenosis
abnormal narrowing of the aorta, esp. of its orifice, usually as a result of rheumatic fever or embryologic anomalies.
* * *narrowing of the passage between the left lower chamber (ventricle) of the heart and the aorta, the principal artery of the systemic circulation. The defect is most often in the valve at the mouth of the aorta but may be just above or below the valve (supravalvular and subvalvular aortic stenosis, respectively). Aortic stenosis in a person younger than 20 years of age is usually congenital in origin. If it appears during middle age, it is most often the result of rheumatic heart disease. Aortic stenosis in elderly persons may be the result of degeneration of the valve with age. Most patients are male.Aortic stenosis causes characteristic heart sounds, audible through a stethoscope. Affected persons may faint after exertion or may experience the chest pain known as angina pectoris. The stenosis may bring about congestive heart failure—the effects of the heart's inability to function adequately as a pump. Medical treatment is directed toward the angina pectoris and heart failure and toward prevention of bacterial invasion of the heart lining (endocarditis). Surgical treatment consists in repairing the aortic valve or replacing it with a synthetic substitute or a transplant.
* * *
Look at other dictionaries:
Aortic stenosis — Narrowing (stenosis) of the heart valve between the left ventricle of the heart and the aorta. This narrowing impedes the delivery of blood through the aorta to the body and makes it tough for the heart to carry out this Herculean task. A normal… … Medical dictionary
aortic stenosis — narrowing of the opening of the aortic valve due to fusion of the cusps that comprise the valve. It may result from previous rheumatic fever, or from calcification and scarring in a valve that has two cusps instead of the normal three, or it may… … The new mediacal dictionary
aortic stenosis — noun abnormal narrowing of the aortic valve • Hypernyms: ↑stenosis, ↑stricture, ↑valvular heart disease * * * noun : a condition usually the result of disease in which the aorta, especially its orifice, is abnormally narrow * * * Pathol. abnormal … Useful english dictionary
Subvalvular aortic stenosis — Subaortic stenosis (SAS) Canine subvalvular aortic stenosis (SAS)Rottweilers are a breed which has a high incidence of an abnormal heart sound, or murmur, caused by Subaortic stenosis (SAS).SAS being a congenital defect, means that is present… … Wikipedia
calcific aortic stenosis — the most common type of aortic stenosis, characterized by calcific nodules around the cusps of the aortic valve … Medical dictionary
supravalvular aortic stenosis — a rare form of aortic stenosis occurring above the aortic valve, usually caused by a complete circumferential fibrous ring of constricting tissue at the level of the sinus of Valsalva. See also Williams syndrome, under syndrome … Medical dictionary
Стеноз Аорты (Aortic Stenosis) — сужение отверстия в аортальном клапане вследствие сращения его створок. Может развиваться после перенесенного ревматизма, или вследствие затвердевания и рубцевания клапана (в этом случае он имеет две створки вместо обычных трех), или же может… … Медицинские термины
subvalvular aortic stenosis — subaortic s … Medical dictionary
supravalvular aortic stenosis syndrome — Williams s … Medical dictionary
Aortic valve stenosis — Classification and external resources ICD 10 I35.0, I06.0, Q23.0 … Wikipedia