stenosis

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Aortic stenosis is a nasty disease.
主動脈瓣狹窄是一個討厭的疾病。
The boy has a rare and potentially fatal condition called Long Segment Congenital Tracheal Stenosis, in which patients are born with an extremely narrow airway.
這個男孩患有一種罕見的稱為“先天性長段氣管狹窄”的有潛在致命性的疾病，這讓他從出生就有較常人非常狹窄的氣道。
A former explosives detection dog, Irano has a debilitating disease called degenerative lumbosacral stenosis and has lost most of the function in his hind legs.
它得過一種被稱之為“退行性腰骶狹窄”的退行性疾病，后腿的功能也大部分喪失。

Stenosis can be caused by rheumatic fever or other problems, and the Edwards valve is useless for those.
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Without surgery, however, the patients with severe aortic stenosis invariably decline and risks of death are quite high.
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But there is at least a theoretical reason that Zetia might succeed in aortic stenosis where statins have not.
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a part of a passage or opening in the body that has become abnormally narrow, or the act of this happening
abnormal constriction or narrowing of a blood vessel or duct