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Updated: Jun 18, 2026

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Published on: August 4, 2023

External magnet displacement in cochlear implants: causes and management.

David Posner¹, Amanda Scott, Colleen Polite

¹Department of Otolaryngology-Head & Neck Surgery, University of California San Francisco, San Francisco, California 94143-0342, USA.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology

|November 20, 2009

Summary

This summary is machine-generated.

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External magnet displacement in cochlear implant patients is a common challenge. Conservative treatments often help, but skin flap thinning may be necessary for persistent issues.

Area of Science:

Otolaryngology
Biomedical Engineering
Neurosurgery

Background:

External magnet displacement is a known complication after cochlear implantation.
Managing magnetic retention difficulties is crucial for optimal device function and patient satisfaction.

Purpose of the Study:

To evaluate the complication of external magnet displacement in cochlear implant patients.
To assess the effectiveness of various interventions for managing magnetic retention difficulties.

Main Methods:

Retrospective case review of 11 cochlear implant patients with postoperative magnetic retention difficulties.
Interventions included conservative measures (hair shaving, headbands) and surgical options (skin flap thinning).

Main Results:

Related Experiment Videos

Last Updated: Jun 18, 2026

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Published on: August 4, 2023

Conservative measures were effective for some patients.
Four patients required skin flap thinning surgery, with 3 experiencing significant improvement.
Overweight or obese patients were prevalent in this cohort.

Conclusions:

External magnet retention difficulties pose a challenge for cochlear implant users.
Conservative management is often successful, but skin flap thinning is a viable surgical option.
Close monitoring of the skin flap is essential to prevent complications like skin breakdown.