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Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
Published on: June 21, 2024
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Cochlear Implant Device Failure in the Postoperative Period: An Institutional Analysis
Simple Ravikumar Bhadania1, Rajesh Vishwakarma2, Amit Keshri1
1Department of Neurosurgery, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.
Asian Journal of Neurosurgery
|November 22, 2018
Summary
Cochlear implant (CI) revision surgery has a high success rate, with significant improvements in auditory and speech outcomes. Emphasizing preoperative counseling for potential device failure is crucial for managing CI complications.
Area of Science:
- Otolaryngology
- Neurosurgery
- Biomedical Engineering
Background:
- Cochlear implant (CI) surgeries are increasing, necessitating a thorough understanding of long-term complications and revision protocols.
- This paper shares institutional experience in managing CI device failures.
Purpose of the Study:
- To review CI device explantation/manipulation outcomes.
- Analyze failure rates, etiologies, surgical considerations, and audiological/speech results.
Main Methods:
- Retrospective study of 250 patients (201 children, 49 adults) undergoing multichannel CI via Veria technique.
- Analysis of preoperative/postoperative auditory and speech outcomes using Category of Auditory Perception (CAP) and Speech Intelligibility Rating (SIR) scores.
Main Results:
- Reimplantation rate was 4%.
- Common causes for revision CI surgery included hard device failure, surgical site infection, magnet displacement, and electrode extrusion.
- Postoperative CAP and SIR scores showed statistically significant improvement (P < 0.05).
Conclusions:
- Revision cochlear implant surgery demonstrates high success rates with favorable postoperative audiological outcomes.
- Preoperative counseling regarding potential device failure is essential.
- Standardized international definitions and reporting protocols for CI failure are needed.
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