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Updated: Jun 26, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation

Performing Intracochlear Electrocochleography During Cochlear Implantation

Published on: March 8, 2022

Incomplete electrode extraction during cochlear implant revision.

Stephen Y Kang¹, Teresa A Zwolan, Paul R Kileny

¹Department of Otolaryngology-Head and Neck Surgery, University of Michigan, Ann Arbor, Michigan 48109-0312, USA.

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

|January 31, 2009

Summary

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Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

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Incomplete electrode extraction during cochlear implant revision is a rare complication. Surgeons should discuss this risk with patients and families before revision surgery.

Area of Science:

Otolaryngology
Neurosurgery
Biomedical Engineering

Background:

Cochlear implantation is a common procedure for hearing restoration.
Revision cochlear implantation is sometimes necessary due to device failure or other complications.
Electrode array extraction is a critical step during revision surgery.

Observation:

This case series reports 3 instances of incomplete electrode extraction during revision cochlear implantation.
The electrode array fractured during removal, leaving a portion within the cochlea.
These events occurred in pediatric patients across three tertiary care centers.

Findings:

Incomplete electrode extraction is a rare intraoperative complication.
Management strategies varied among the surgical teams in the reported cases.

Related Experiment Videos

Last Updated: Jun 26, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation

Performing Intracochlear Electrocochleography During Cochlear Implantation

Published on: March 8, 2022

The complication was not typically anticipated during preoperative counseling.

Implications:

Preoperative counseling for revision cochlear implantation should include the potential risk of incomplete electrode extraction.
Awareness of this complication may aid in surgical planning and patient management.
Further research into prevention and management strategies is warranted.