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Related Experiment Video

Updated: Mar 8, 2026

Surgical Labyrinthectomy of the Rat to Study the Vestibular System

Surgical Labyrinthectomy of the Rat to Study the Vestibular System

Published on: May 19, 2018

[Temporary loss of vestibular function after cochlear implant surgery].

Leise Elisabeth Hviid Korsager¹, Jesper Hvass Schmidt, Christian Faber

¹lekor11@student.sdu.dk.

Ugeskrift for Laeger

|January 25, 2017

Summary

Cochlear implant surgery can cause temporary vestibular dysfunction, leading to balance issues and reduced vestibulo-ocular reflex (VOR) gain. However, these symptoms often resolve within a month, indicating reversible vestibular changes after CI surgery.

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Area of Science:

Neuroscience
Otolaryngology
Audiology

Background:

Cochlear implant (CI) surgery is frequently associated with the loss of vestibular function.
Vestibular dysfunction can manifest as balance problems and abnormal vestibulo-ocular reflex (VOR) gain.

Observation:

A patient undergoing CI surgery experienced immediate post-operative balance issues.
Video head impulse testing revealed reduced VOR gain and horizontal semicircular canal saccades the day after surgery.
These symptoms and objective measures significantly improved one month post-operation.

Findings:

The patient's VOR gain normalized to 0.95 ± 0.05 one month after CI surgery.
Balance problems and saccades observed post-surgery were no longer present at the one-month follow-up.
This case suggests that vestibular dysfunction following CI surgery can be a transient condition.

Implications:

Vestibular dysfunction after cochlear implantation may be reversible.
Monitoring VOR gain and clinical symptoms is crucial for assessing recovery post-CI.
These findings could inform patient counseling and management strategies for CI candidates experiencing vestibular side effects.