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Updated: Jun 27, 2026

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Published on: August 4, 2023

Cochlear reimplantations: technical and surgical failures.

Tommaso Sorrentino¹, Mathieu Coté, Elie Eter

¹Department of Otology-Neurotology and Skull Base Surgery, Purpan University Hospital, Toulouse, France. tomsorre@tin.it

Acta Oto-Laryngologica

|November 26, 2008

Summary

Cochlear implant revision surgery is necessary in 3.8-4.5% of cases due to device failures or medical issues. Early diagnosis and prevention of complications like electrode misplacement are crucial for successful outcomes.

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Cochlear Reimplantation Following Device Dysfunction: A Retrospective Cohort Study.

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Area of Science:

Otolaryngology
Neurosurgery
Biomedical Engineering

Background:

Cochlear implantation is a common procedure for hearing loss.
Revision surgery may be required due to device failure or medical complications.
Electrode array misplacement is a rare but serious complication.

Purpose of the Study:

To review cochlear implant revision surgery cases.
To compare findings with existing literature.
To report and discuss prevention of electrode array misplacement.

Main Methods:

Retrospective review of cochlear implant revision surgeries.
Analysis of causes for revision.
Case reports of electrode array misplacement.

Related Experiment Videos

Last Updated: Jun 27, 2026

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Published on: August 4, 2023

Main Results:

Revision rate of 3.8% in adults and 4.5% in children.
Device failure occurred at 7.6 years (children) and 1.5 years (adults).
Common causes included hard/soft failures, medical reasons (e.g., infection), and two cases of electrode misplacement into the vestibular system.

Conclusions:

Cochlear implant surgeons need expertise in diagnosing device failures and managing complications.
Unidentified inner ear malformations can lead to electrode array misplacement.
Intraoperative telemetry and radiographic imaging are vital for preventing misplacement complications.