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Indian Journal of Otolaryngology and Head & Neck Surgery

Erschienen in:

21.10.2023 | Original Article

Round Window Visibility in Cochlear Implantation : Pre-operative Prediction Using Various Radiological Parameters

verfasst von: Anjali Gupta, Sunil Samdani, Shivam Sharma, Mohnish Grover, Samanvaya Soni, Mahendra Singh Hada, Amit Kumar

Erschienen in: Indian Journal of Otolaryngology and Head & Neck Surgery | Ausgabe 1/2024

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Abstract

Purpose

The round window approach has become the most preferred route for electrode insertion in cochlear implant surgery; however, it is not possible at times due to difficult round window membrane (RWM) visibility. Our study aims to investigate the relationship between preoperative radiological parameters and the surgical visibility of the RWM in Cochlear implant patients.

Methodology

A prospective cross-sectional study of 31 patients, age < 6 years, with bilateral severe to profound sensorineural hearing loss was conducted at a tertiary care hospital. The preoperative HRCT temporal bone scan was studied, and the parameters evaluated were facial nerve location, facial recess width, and RWM visibility prediction. All patients were operated on via the posterior tympanotomy. The surgical RWM visibility was done after optimal drilling of the posterior tympanotomy recess. The relationship between the radiological parameters and surgical visibility of RWM was evaluated.

Results

The difference in the facial nerve location as per the type of RWM was found to be significant (p value < 0.05). However, the facial recess width was not significantly associated with RWM visibility. The radiological prediction of RWM visibility by tracing the prediction line over RWM was significantly associated with intraoperative RWM visibility.

Conclusion

The goal to look for preoperative scans is to predict the ease or difficulty of RWM visibility during surgery. The difficult visualization of the RWM, can result in dire intraoperative consequences. A comprehensive understanding of preoperative radiological parameters, coupled with meticulous surgical planning, is crucial to address these challenges effectively by focusing on enhancing RWM visualization.

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Titel: Round Window Visibility in Cochlear Implantation : Pre-operative Prediction Using Various Radiological Parameters
verfasst von: Anjali Gupta
Sunil Samdani
Shivam Sharma
Mohnish Grover
Samanvaya Soni
Mahendra Singh Hada
Amit Kumar
Publikationsdatum: 21.10.2023
Verlag: Springer India
Erschienen in: Indian Journal of Otolaryngology and Head & Neck Surgery / Ausgabe 1/2024
Print ISSN: 2231-3796
Elektronische ISSN: 0973-7707
DOI: https://doi.org/10.1007/s12070-023-04280-5

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Round Window Visibility in Cochlear Implantation : Pre-operative Prediction Using Various Radiological Parameters