Volume 3
Number 2 July 2019Evaluation of Hearing Status after Type-1 Tympanoplasty
DOI: https://doi.org/10.70357/jdamc.2019.v0302.02
Islam M S1 , Kashem M A2 , Awual S M A3 , Afrin A4 , Islam M R5
Abstract
Objective: To evaluate hearing outcome after type-1 tympanoplasty in inactive mucosal type of chronic otitis media.
Methods: This was an observational cross sectional study which was carried out in the department of Otolaryngology and Head Neck Surgery of Sir Salimullah Medical College Mitford Hospital during period of January 2016 to December 2016. A total of 50 patients who underwent successful type-1 tympanoplasty were collected. Majority of the patients were operated on under local anaesthesia. After 3 months pure tone audiometry was performed according to ISO standard. The hearing thresholds were measured at 500, 1000 & 2000 Hz. Air and bone conduction thresholds were determined with appropriate masking technique throughout.
Result: In this study, majority of the patients belong to age 21 to 30 years and most of patients were female. About 28 (56%) patients had inferior perforation and 31 (62%) had medium size perforation. Mean pre-operative air conduction threshold was 43.6 dB and significantly reduced to 32.0 dB after type-1 tympanoplasty. Mean change in air conduction threshold was 11.5 dB. Mean pre-operative air-bone gap was 33.1 dB and significantly reduced to 22.9 dB after type I tympanoplasty. Mean change in air-bone gap was 10.1 dB.
Conclusion: Overall improvement of air conduction threshold and AB gap after type I tympanoplasty was statistically significant. Thus from this study it can be concluded that type I tympanoplasty is an effective technique for hearing improvement in inactive mucous type of chronic otitis media.
Keywords: Tympanoplasty, Hearing improvement, Chronic otitis media, Audiometry.
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