DOI: https://dx.doi.org/10.18203/issn.2454-5929.ijohns20221059
Published: 2022-04-22

Role of preoperative tympanometric evaluation of eustachian tube in patients undergoing type-1 tympanoplasty for chronic otitis media

Gopika Gopalakrishnan, Shibu George

Abstract


Background: A dysfunctional eustachian tube can cause failure of middle ear pressure regulation which leads to chronic otitis media and tympanoplasty failure. The functional status of eustachian tube can non-invasively be assessed prior to tympanoplasty by impedence audiometry. This help to predict the outcome of the procedure as well as aid surgeons to plan the surgery accordingly. The aim of the study was to determine the role of pre-operative tympanometric evaluation of eustachian tube function in patients with chronic otitis media.

Methods: This study was conducted on 42 patients with chronic otitis media underwent type-1 tympanoplasty in department of otorhinolaryngology, Government Medical College, Kottayam over a period of one year. Detailed history, clinical and audiological evaluation done. Type-1 tympanoplasty performed and reassessed after 3 months. Data compiled and analysed using SPSS.

Results: Intra-operative findings were similar to the audiometric results. Majority of patients with dysfunctional eustachian tube got a non-satisfactory hearing outcome compared to patients with good eustachian tube function, and this comparison is statistically significant with p value 0.006. The graft uptake in patients with dysfunctional eustachian tube is poor compared to patients with good eustachian tube function, which is statistically significant with p value 0.013.

Conclusions: Impedence audiometer can very reliably assess and ascertain eustachian tube dysfunction pre-operatively. The outcome of type-1 tympanoplasty in patients with eustachian tube dysfunction is uniformly poor. Better outcome probably would be gained by using more resilient materials like cartilage.


Keywords


Chronic otitis media, Eustachian tube function, Tympanoplasty, Impedence audiometry

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References


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