- 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.
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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
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calcific aortic stenosis — the most common type of aortic stenosis, characterized by calcific nodules around the cusps of the aortic valve … Medical dictionary
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subvalvular aortic stenosis — subaortic s … Medical dictionary
supravalvular aortic stenosis syndrome — Williams s … Medical dictionary
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