Normal middle ear volume indicates the well ventilated middle ear and subsequently the normal function of the Eustachian tube. We carried out preoperative assessment of the middle ear volume by tympanometry and scintigraphic evaluation of Eustachian tube patency in patients with unilateral otitis media. We correlated the middle ear volume and Eustachian tube patency in these patients. Prospective. A total of 58 patients with unilateral otitis media were studied. All patients underwent Eustachian tube scintigraphy. We categorized the patients as Group A with patent Eustachian tube and Group B with blocked Eustachian tube (ET). We assessed the equivalent middle ear volume (VeqME) in all patients and correlated it with ET patency. We also correlated the degree of hearing loss and intraoperative middle ear pathology in two groups. There is strong linear correlation between the ET patency and VeqME of the patients. Degree of hearing loss and the middle ear pathology is also found to be severe in patients with blocked ET and low VeqME. Preoperative assessment of patients with chronic otitis media should include the objective evaluation of middle ear volume and ET patency, as it is the reliable predictor of middle ear pathology.
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| http://dx.doi.org/10.1007/s12070-017-1074-9 | DOI Listing |
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