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 Aortic Valve Stenosis

 Aortic Valve Stenosis FactAortic stenosis results from an abnormal narrowing of the aortic valve which separates the left ventricle from the aorta.  This blocks the normal outflow of blood and can lead to a wide range of symptoms. 


Aortic valve stenosis (AS) is a type of valvular heart disease characterized by an abnormal narrowing of the aortic valve opening.

The aortic valve typically consists of three leaflets (trileaflets). It mediates the flow of blood from the left ventricle to the aorta and the rest of the body during ventricular systole. When the aortic valve becomes progressively stenotic, a pressure gradient is created between the left ventricle (LV) and the aorta since blood cannot be adequately pumped through a narrow orifice. Initially, the left ventricle compensates by thickening of its walls (myocardial hypertrophy) in order to maintain adequate systolic function (pumping pressure) in order to overcome the increased afterload caused by the stenotic aortic valve. The type of hypertrophy most commonly seen in AS is concentric hypertrophy, meaning that all the walls of the LV are (approximately) equally thickened. In the later stages, the left ventricle dilates due to increased wall stress, and the systolic function deteriorates.

  Related Topics

 

  Aortic Valve Stenosis Listings

Aortic Valve Stenosis and Insufficiency - information provided by the American Heart Association

Aortic Stenosis - information from MedLine Plus Medical Encyclopedia including definitions, illustrations, etc.

Aortic Valve Stenosis - WebMD information page

Aortic Valve Stenosis - information on symptoms, diagnosis, treatment, prognosis, etc.

 

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