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 aortic valve has three leaflets or cusps, but a stenotic valve may have only one cusp (unicuspid) or two cusps (bicuspid), which are thick. stiff and stenotic. Some children with aortic stenosis have chest pain, unusual fatigue, dizziness or fainting. Many children have few or no symptoms. The need for surgery depends on the degree of stenosis. Although surgery may enlarge the stenotic valve the valve remains deformed and eventually may need to be replaced with an artificial one. A procedure called balloon valvuloplasty has been used in some children with aortic stenosis. Persons with aortic stenosis need medical follow-up all their lives since even mild stenosis may worsen over time and need treatment.

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aortic stenosis n a condition usu. the result of disease in which the aorta and esp. its orifice is abnormally narrow

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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 be congenital. Aortic stenosis obstructs the flow of blood from the left ventricle to the aorta during systole. Breathlessness on effort, angina pectoris, and fainting may follow. The patient has a systolic murmur. When symptoms develop the valve should be replaced surgically with a mechanical prosthesis (such as a Starr-Edwards ball-cage valve) or with an aortic valve graft.

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(AS) narrowing of the aortic orifice or of the supravalvular or subvalvular regions; see also supravalvular aortic s. and subvalvular aortic s.

Medical dictionary. 2011.

Look at other dictionaries:

  • aortic stenosis — Pathol. abnormal narrowing of the aorta, esp. of its orifice, usually as a result of rheumatic fever or embryologic anomalies. * * * ▪ pathology       narrowing of the passage between the left lower chamber (ventricle) of the heart and the aorta …   Universalium

  • 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

  • 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

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