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Updated: Jul 9, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Taste change following cochlear implantation.

Simon Lloyd¹, Leah Meerton, Riccardo Di Cuffa

¹Cochlear Implant Programme, Royal National Throat Nose and Ear Hospital, London, UK. sklloyd@blueyonder.co.uk

Cochlear Implants International

|November 23, 2007

Summary

Cochlear implantation can cause taste changes, often due to chorda tympani nerve (CTN) issues. While dividing the CTN increases taste alteration risk, it may lead to better symptom resolution compared to nerve preservation.

Related Experiment Videos

Last Updated: Jul 9, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Area of Science:

Otolaryngology
Neurosurgery
Sensory Neuroscience

Background:

Taste alteration is a known complication of middle ear surgery, typically linked to chorda tympani nerve (CTN) damage.
Taste outcomes after cochlear implantation have not been previously documented.

Purpose of the Study:

To investigate the incidence and characteristics of taste changes following cochlear implantation.
To compare taste outcomes based on intraoperative management of the CTN.

Main Methods:

A postal survey was conducted among 141 patients who underwent cochlear implantation between 1997 and 2006.
Patients reported taste changes, symptom resolution, and time to resolution post-surgery.

Main Results:

45% of patients experienced taste changes post-cochlear implantation.
Taste alteration occurred in 86% of patients with CTN division and 50% with CTN preservation (p < 0.05).
Symptom resolution occurred in a mean of 20 weeks, with faster resolution observed in patients whose CTN was divided.

Conclusions:

Cochlear implantation frequently leads to taste disturbances, impacting a significant portion of patients.
While CTN division increases the risk of taste change, it may correlate with better symptom resolution compared to nerve preservation.
Intraoperative management of the CTN requires careful consideration due to potential taste alterations, especially with increasing bilateral implantations.