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A. Eustachian tube function tests and their diagnostic potential in normal and diseased ears. Acta Otolaryngol (Stockh) 1993; Suppl 500: 10-13.We have summarized various methods for testing Eustachian tube function since the 1980's. There have been numerous contributions to our knowledge on Eustachian tube and middle ear functions, and the pathophysiology of disorders of the middle ear has been clarified. Understanding of the Eustachian tube function and controlling the Eustachian tube dysfunction are mandatory for adequate clinical management and for improvement of the prognosis. Key words: passive opening capacity, active opening capacity, middle ear disease, functional obstruction. Acta Otolaryngol Downloaded from informahealthcare.com by Purdue University on 04/13/15For personal use only.

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