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Aortic stenosis ( AS or AoS) is the narrowing of the exit of the left ventricle of the heart (where the aorta begins), such that problems result. [1] It may occur at the aortic valve as well as above and below this level. [1] It typically gets worse over time. [1]
- Gradual
In cardiology, aortic valve area calculation is an indirect method of determining the area of the aortic valve of the heart. The calculated aortic valve orifice area is currently one of the measures for evaluating the severity of aortic stenosis. A valve area of less than 1.0
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Common causes of aortic regurgitation include vasodilation of the aorta, previous rheumatic fever, infection such as infective endocarditis, degeneration of the aortic valve, and Marfan's syndrome. Aortic stenosis can also be caused by rheumatic fever calcification.
- valva aortae
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Aortic valve stenosis, which is the thickening of the aortic valve, therefore causing narrowing Elsewhere Stenoses/strictures of other bodily structures/organs include: Pyloric stenosis (gastric outflow obstruction) Lumbar, cervical or thoracic spinal stenosis (SGS)
- Stenoses
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Supravalvular aortic stenosis is a congenital obstructive narrowing of the aorta just above the aortic valve and is the least common type of aortic stenosis. It is often associated with other cardiovascular anomalies and is one of the characteristic findings of or MRI.
Stenosis of the aortic valve is characterized by a thickening of the valvular annulus or leaflets that limits the ability of blood to be ejected from the left ventricle into the aorta. Stenosis is typically the result of valvular calcification but may be the result of a congenitally malformed bicuspid aortic valve.
Heyde's syndrome is a syndrome of gastrointestinal bleeding from angiodysplasia in the presence of aortic stenosis. [1] [2] It is named after Edward C. Heyde, MD, who first noted the association in 1958. [3] . It is caused by cleavage of Von Willebrand factor (vWF) due to high shear stress forces from aortic valvular stenosis.
