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Related Experiment Videos

Chorda tympani trauma--how much does it affect taste?

S B Yeo1, A H Loy

  • 1Department of Otorhinolaryngology, Tan Tock Seng Hospital, Singapore.

Singapore Medical Journal
|August 1, 1997
PubMed
Summary

Middle ear surgery can affect taste due to the chorda tympani nerve. Preserving this nerve may reduce permanent taste changes, though some taste alteration is common post-operation.

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Sensory science

Background:

  • The chorda tympani nerve is vulnerable during middle ear surgery.
  • Surgeons debate nerve preservation versus sacrifice for optimal patient outcomes.
  • Dysgeusia (taste alteration) is a known complication of middle ear procedures.

Purpose of the Study:

  • To investigate the incidence and duration of taste changes after middle ear surgery.
  • To compare taste outcomes between nerve preservation and sacrifice.
  • To identify risk factors for permanent taste dysfunction.

Main Methods:

  • Retrospective study of 31 patients undergoing middle ear surgery.
  • Documentation of patient-reported taste changes.
  • Analysis of surgical records regarding chorda tympani nerve status (preserved or sacrificed).

Main Results:

  • Taste changes were observed in many patients post-surgery.
  • A significant portion of taste alterations resolved over time.
  • Sacrificing the chorda tympani nerve was associated with a 31% higher incidence of permanent taste change.

Conclusions:

  • While temporary taste disturbance is common after middle ear surgery, recovery is possible.
  • Sacrificing the chorda tympani nerve increases the risk of persistent dysgeusia.
  • Careful consideration of nerve management is crucial to minimize long-term taste deficits.

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