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Facial Nerve Stimulation Patterns Associated With Cochlear Implantation in Labyrinthitis Ossificans. | LitMetric

AI Article Synopsis

  • The study examines facial nerve stimulation (FNS) patterns in patients with labyrinthitis ossificans who received cochlear implants (CIs) for hearing loss.
  • Out of 14 ears treated over 11 years, 5 (35.7%) developed FNS, primarily affecting middle and apical electrodes but also some basal ones.
  • While reprogramming the CI resolved FNS in all cases, it often led to limited auditory benefit, causing some patients to stop using the device altogether.

Article Abstract

Objective: To describe and characterize facial nerve stimulation (FNS) patterns in patients with labyrinthitis ossificans who underwent cochlear implantation (CI) for sensorineural hearing loss.

Patients: Five ears in four patients with labyrinthitis ossificans who underwent CI and subsequently developed FNS.

Interventions: CI, electrode mapping, and/or explantation to resolve FNS.

Main Outcome Measures: FNS, postoperative computed tomography imaging, and resolution of FNS.

Results: Fourteen ears with labyrinthitis ossificans underwent CI over an 11-year period at a single institution; 5 of these ears exhibited postoperative FNS (35.7% incidence). Four cases had involvement of basal electrodes, while all five cases had middle and/or apical electrode stimulation. All cases had resolution of FNS with CI reprogramming, however, the resultant map in two cases provided minimal audiologic benefit and patients became nonusers in that ear.

Conclusions: FNS arising from all cochlear regions is possible in patients with labyrinthitis ossificans who undergo CI. Mapping and electrode deactivation can resolve symptoms, but resultant audiologic benefit is variable and may lead to explantation.

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Source
http://dx.doi.org/10.1097/MAO.0000000000002028DOI Listing

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