Predisposing factors for inner ear hearing loss association with chronic otitis media |
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Authors: | Luca Oscar Redaelli de Zinis Chiara Campovecchi Giovanni Parrinello Antonino Roberto Antonelli |
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Institution: | 1. Department of Otolaryngology, University of Brescia School of Medicine, Italylucaosre@tin.it;3. Department of Otolaryngology, University of Brescia School of Medicine, Italy;4. Section of Medical Statistics Department of Biosciences, University of Brescia School of Medicine, Italy |
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Abstract: | The aim of the present study was to investigate the consequences of chronic otitis media on inner ear function. Retrospective analysis of conventional pure-tone audiometry tests was carried out on 344 patients who were scheduled for surgical treatment of unilateral chronic otitis media without other risk factors for sensorineural hearing loss. Bone conduction thresholds of diseased ears were compared with those of contralateral, non-diseased ears. Selected clinical features were assessed among diseased ears to examine possible influences on inner ear function. Mean bone conduction threshold differences varied from 0.6?dB at 0.5?kHz to 3.7?dB at 4?kHz. These differences augmented with increasing duration of middle ear disease. Impaired hearing by bone conduction thresholds of diseased ears correlated with increased age at every frequency and with an interruption of the ossicular chain only at higher frequencies. The severity of sensorineural hearing loss correlated with longer duration of middle ear disease. Thus, surgical treatment of dry and apparently stable tympanic membrane perforation is warranted. |
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Keywords: | Sensorineural hearing loss Chronic otitis media |
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