This allows pressure equalization between the external air and the air pressure inside the tympanic cavity and, also, middle ear aeration. The auditory tube is closed during rest and, by the action of the soft palate tensor muscle and the soft palate elevator muscle which are activated through swallowing and/or yawning, air moves from the nasal pharynx to the middle ear 2, 3. The junction between the bony and the cartilage portions form the auditory tube's isthmus which, similarly to a valve, controls air intake1. It is made up of a shorter bony part, 12 millimeters long, corresponding to the auditory tube semicanal and a 24mm cartilage, which base is inserted under the rhinopharynx lateral wall mucosa 1. The auditory tube is a closed organic tube which connects the rhinopharynx and the middle ear. Other studies are important to establish a standard of normality in each condition of the test and for a better understanding of these people's complaints. Therefore it is important to test its function in such individuals. We observed a higher percentage of men (90.9%) with normal functioning Eustachian tube in relation to women (65%).Ĭonclusion: Middle ear infections, rhinitis and/or sinusitis influenced the Eustachian tube functioning. There was no statistically significant difference considering the affected ear. Results: In the study group, 21.4% of the persons presented dysfunction of the tube against 0% in the control group. The data was analyzed to compare the Eustachian tube function in both groups. The patients (study group with past otological disease) were matched by a control group. Materials and Methods: The Eustachian tube function was evaluated in forty-two females and males of 18 to 55 years of age with intact tympanic membrane, tympanometric A curves and without historic of otological surgery. The Eustachian tube has the function of equilibrating the environmental pressure with inner pressure, protecting the middle ear from abrupt pressure changes.Īim: To compare the Eustachian tube function in adults with and without history of otitis media and/or respiratory tract inflammation without tympanic membrane perforation.
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