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Magnet displacement following cochlear implantation.
Lela Migirov1, Jona Kronenberg
1Department of Otolaryngology and Head and Neck Surgery, Sheba Medical Center, Tel Aviv, Israel. kro@zahav.net.il
Summary
Magnet displacement after cochlear implantation is a rare complication. This study shows that surgical revision can successfully manage magnet migration, restoring auditory function.
Area of Science:
- Otolaryngology
- Neurosurgery
- Biomedical Engineering
Background:
- Cochlear implantation is a common procedure for hearing restoration.
- Rare complications can arise, impacting device function and patient outcomes.
Observation:
- Two pediatric cases of magnet displacement following Nucleus 24 cochlear implantation are presented.
- One case involved anterior coil displacement; the other, magnet migration after head trauma.
Findings:
- Plain skull radiographs diagnosed magnet dislocation in both cases.
- Surgical revision and magnet reinsertion successfully resolved the complication.
- Intraoperative Neural Response Telemetry confirmed auditory nerve function post-revision.
Implications:
- Magnet migration should be considered in cochlear implant device malfunction.
- Simple surgical revision offers a successful management strategy.
- Maintaining device integrity is crucial for long-term hearing outcomes.