Evaluation of hearing loss in relation to tympanic membrane
Journal Title: Medpulse International Journal of ENT - Year 2017, Vol 3, Issue 3
Abstract
Background: Tympanic membrane perforation leads to varying degree of conductive hearing loss. Loss of hearing is a national health problem with significant physical and psychosocial problem. The present study was an attempt to evaluate the hearing loss in tympanic membrane perforation based on size and site of perforation. Material and Methods: This study consisted of 50 randomly selected patients with dry unilateral or bilateral perforations of tympanic membrane. Each patient underwent complete ENT examination and hearing loss was assessed by pure tone audiometry. Results: All tympanic membrane perforations, irrespective of its size and location caused hearing loss (average 18 dB).Larger perforations caused more hearing loss than small perforations. The hearing loss increased as the size of perforation increased. Perforations in postero-inferior quadrants resulted in more hearing loss (25.7 dB average) as compared to the perforations in antero-inferior quadrants (14.2 dB average), whether they are malleolar or non-malleolar. Conclusion: The degree of conductive hearing loss increased statistically with increasing size of tympanic membrane perforation, as well as the posteriorly placed perforations resulted in more hearing loss than anteriorly placed perforations
Authors and Affiliations
Raghuji Thorat, Tushar Tajne, Janardan Pisal
Keywords
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