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Aortic Valve Stenosis Essay Preview: Aortic Valve Stenosis Report this essay Aortic Valve Stenosis Aortic Valve Stenosis is the narrowing or obstruction of the hearts aortic valve. The aorta is a large artery that originates in the left ventricle (lower chamber) of the heart. The narrowing and obstruction of the aortic valve prevents it from.