The automatic Toynbee test can be a practical, objective and suitable method to assess ventilatory function of ET. Results: Impedance audiometry offers an easy means of assessing ETF. In all these cases, other routine investigations were also performed. Alongside otoendoscopy, nasal endoscopy, dye test were done. All the recruited patients were first examined clinically and under microscope and then their audiological (impedance audiometry) and radiological assessment of mastoid was done. Materials and Methods: A cross-sectional study was done with 54 patients presenting with inactive mucosal type of chronic otitis media. In this study, the incidence of ET dysfunction and its patency has been evaluated in inactive mucosal variety of chronic otitis media, in relation to the types of central perforation. There is a general agreement that adequate ETF is necessary for middle ear surgery. Background: Eustachian tube function (ETF) has been the center of focus as a prognostic factor because of its presumed primary role in the pathogenesis of otitis media and clearance of the middle ear cavity.
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