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Definition of Aortic stenosis
1. Noun. Abnormal narrowing of the aortic valve.
Medical Definition of Aortic stenosis
1. Progressive narrowing of the aortic valve resulting in the obstructed passage of blood from the left ventricle into the aorta. Causes for aortic stenosis include rheumatic fever, congenital and idiopathic sclerosis. Chronic stenosis can lead to left ventricular enlargement and congestive heart failure. (27 Sep 1997)