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Updated: Jul 2, 2026

Endoscopic Cholesteatoma Surgery
08:47

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Published on: January 19, 2022

Chorda tympani nerve function after myringoplasty.

E H Sham1, N Prepageran, R Raman

  • 1Department of Otorhinolaryngology, University Malaya Medical Centre, 50603 Kuala Lumpur.

The Medical Journal of Malaysia
|August 19, 2008
PubMed
Summary
This summary is machine-generated.

This study found 50% of patients undergoing myringoplasty experienced Chorda Tympani Nerve (CTN) injury, but without noticeable subjective taste loss. This highlights a disconnect between objective nerve damage and patient-reported symptoms.

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Sensory Science

Background:

  • Myringoplasty is a common surgical procedure.
  • Chorda Tympani Nerve (CTN) injury can occur during middle ear surgery.
  • Assessing CTN injury often relies on subjective taste alteration reports.

Purpose of the Study:

  • To determine the prevalence of CTN injury after myringoplasty.
  • To correlate objective CTN injury with subjective taste disturbance.
  • To investigate taste threshold changes post-myringoplasty.

Main Methods:

  • Cross-sectional study design.
  • Electrogustometry used to measure taste thresholds on the anterior tongue.
  • Comparison of operated side taste thresholds against the non-operated side.

Main Results:

  • 50% of patients exhibited elevated taste thresholds, indicating CTN injury.
  • No patients reported subjective taste loss.
  • Objective CTN injury prevalence was 50%.

Conclusions:

  • Myringoplasty is associated with a 50% prevalence of subclinical CTN injury.
  • Objective CTN injury does not necessarily manifest as subjective taste alteration.
  • Taste threshold measurement is a sensitive tool for detecting CTN injury post-myringoplasty.