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Related Experiment Videos

Promontory electrical stimulation in labyrinthectomized ears.

P R Lambert1, R A Ruth, C F Halpin

  • 1Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health Sciences Center, Charlottesville 22908.

Archives of Otolaryngology--Head & Neck Surgery
|February 1, 1990
PubMed
Summary

Cochlear implants may be feasible in patients with Menière

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Area of Science:

  • Otolaryngology
  • Neuroscience
  • Audiology

Background:

  • Menière's disease can lead to bilateral deafness.
  • Unilateral labyrinthectomy is a treatment for Menière's disease.
  • Feasibility of cochlear implantation in labyrinthectomized ears is unclear.

Purpose of the Study:

  • To assess the feasibility of cochlear implantation in patients with prior unilateral labyrinthectomy.
  • To evaluate the function of auditory pathways after labyrinthectomy.

Main Methods:

  • Promontory electrical testing using transtympanic needle stimulation.
  • Tested six patients with unilateral transmastoid labyrinthectomy (6 weeks to 5 years prior).
  • Assessed behavioral responses and electrically evoked middle latency responses.

Main Results:

  • All patients exhibited behavioral responses to electrical stimulation.
  • Patients perceived different pitches across four frequencies.
  • Five patients showed electrically evoked middle latency responses.

Conclusions:

  • Peripheral neural elements and central auditory pathways remain functional post-labyrinthectomy.
  • Cochlear implantation is a potential option for labyrinthectomized ears.
  • Labyrinthectomy should remain a viable surgical option when indicated.

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