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Revision cochlear implant surgery: causes and outcome
Jose N Fayad1, Tony Baino, Simon C Parisier
1Department of Otolarygology-Head and Neck Surgery, Columbia University College of Physicians and Surgeons, New York, NY, USA. jfayad@hei.org
Summary
Cochlear implant reimplantation is a feasible procedure that maintains or improves hearing performance. Patients should be aware of potential sound quality changes but can expect stable or better speech recognition.
Area of Science:
- Otolaryngology
- Neurosurgery
- Audiology
Background:
- Cochlear implants (CIs) are vital for hearing restoration in severe to profound sensorineural hearing loss.
- Device failure, obsolescence, or the desire for technological upgrades necessitate CI reimplantation.
- Understanding the outcomes of reimplantation surgery is crucial for managing patient expectations and optimizing auditory rehabilitation.
Purpose of the Study:
- To evaluate the clinical experience and audiological outcomes of cochlear implant reimplantation surgeries.
- To assess the impact of reimplantation on speech perception and electrode integrity.
Main Methods:
- A retrospective review was conducted on 43 patients (8 adults, 35 children) who underwent cochlear implant revision surgery.
- Data collected included surgical findings, number of electrodes inserted, and pre- and post-operative speech perception scores.
- Complications and reasons for reimplantation (device failure or upgrade) were documented.
Main Results:
- Cochlear reimplantation was technically feasible with a low complication rate (9.3% overall).
- The number of inserted electrodes remained unchanged in most cases (40/43 patients).
- Speech perception abilities were generally stable or showed improvement following reimplantation.
Conclusions:
- Cochlear reimplantation is a viable surgical option that enables continued auditory stimulation.
- While minor differences in sound quality may occur, reimplantation typically preserves or enhances speech recognition abilities.