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Updated: Jul 18, 2026
06:54
Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation
Published on: August 4, 2023
Vestibular impairment and cochlear implantation.
Roberto Filipo1, Mario Patrizi, Raffaella La Gamma
1Department of Neurology and Otorhinolaryngology, I Medical School, University of Rome La Sapienza, via Grottarossa, Rome Italy.
Acta Oto-Laryngologica
|November 15, 2006
Summary
Cochlear implantation (CI) can cause vestibular impairment, independent of deafness cause or hearing loss. Pre-operative vestibular testing may aid ear selection for unilateral CI cases.
Area of Science:
- Otolaryngology
- Neuroscience
- Audiology
Background:
- Cochlear implantation (CI) is a common treatment for severe to profound hearing loss.
- Potential side effects of CI include vestibular dysfunction, which requires further investigation.
Purpose of the Study:
- To assess vestibular impairment following cochlear implantation.
- To determine if impairment relates to the cause of deafness, hearing deterioration, surgical trauma, or stimulation duration.
Main Methods:
- Reviewed charts from 21 prospective and 72 retrospective CI patients using Clarion devices.
- Conducted vestibular testing (rotatory, caloric, stabilometric) pre-operatively and post-activation.
- Assessed hearing thresholds and collected balance condition questionnaires.
Main Results:
- Post-operative vestibular impairment observed in a significant percentage of patients, including vertigo and unsteadiness.
- Some patients experienced VPPB episodes post-CI.
- Hearing thresholds deteriorated similarly in both vestibular-impaired and control groups.
Conclusions:
- Cochlear implantation can lead to immediate and delayed vestibular impairment.
- This impairment appears unrelated to the cause of deafness or hearing deterioration.
- Pre-operative vestibular evaluation may assist in selecting the optimal ear for unilateral CI.
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