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Triamcinolone Injection for Cochlear Implant Magnet Adherence Issues.

Karen Tawk1, Khodayar Goshtasbi1, Madelyn Frank1

  • 1Department of Otolaryngology-Head and Neck Surgery, University of California, Irvine, California.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|August 8, 2023
PubMed
Summary
This summary is machine-generated.

Triamcinolone injections effectively treat cochlear implant (CI) magnet displacement caused by adhesions. This treatment thins scalp tissue, improving magnet retention and processor use in most patients.

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Area of Science:

  • Neurosurgery
  • Otolaryngology
  • Medical Devices

Background:

  • Adhesions at the cochlear implant (CI) magnet site can cause external magnet displacement.
  • This displacement leads to processor issues and impacts CI functionality.
  • Previous conservative treatments have often failed to resolve these adhesion problems.

Purpose of the Study:

  • To evaluate the efficacy of triamcinolone injections in managing external magnet displacement in CI patients.
  • To assess the impact of these injections on scalp thickness and magnet retention.

Main Methods:

  • Seven CI patients with magnet adhesion issues were treated with subcutaneous triamcinolone injections (40 mg/mL) at the CI magnet site.
  • Scalp thickness was measured using preoperative CT scans.
  • Outcomes included reduction in scalp thickness and successful magnet retention, allowing processor use.

Main Results:

  • Six of seven patients (seven of eight CI sites) achieved successful magnet retention after triamcinolone injections, enabling processor use for an average of 9.55 hours/day.
  • The average number of injections was 2.57.
  • No adverse skin reactions or magnet exposure occurred during follow-up.

Conclusions:

  • Triamcinolone injections are an effective treatment for reducing subcutaneous tissue thickness at the CI site.
  • This method significantly improves magnet retention and restores processor functionality in CI patients with adhesion-related issues.