title: Cortical Auditory Evoked Potentials to Evaluate Cochlear Implant Candidacy in an Ear With Long-standing Hearing Loss: A Case Report.
abstract: OBJECTIVE
  We describe a novel use of cortical auditory evoked potentials in the preoperative workup to determine ear candidacy for cochlear implantation.
  
  
  METHODS
  A 71-year-old male was evaluated who had a long-deafened right ear, had never worn a hearing aid in that ear, and relied heavily on use of a left-sided hearing aid. Electroencephalographic testing was performed using free field auditory stimulation of each ear independently with pure tones at 1000 and 2000 Hz at approximately 10 dB above pure-tone thresholds for each frequency and for each ear.
  
  
  RESULTS
  Mature cortical potentials were identified through auditory stimulation of the long-deafened ear. The patient underwent successful implantation of that ear. He experienced progressively improving aided pure-tone thresholds and binaural speech recognition benefit (AzBio score of 74%).
  
  
  CONCLUSIONS
  Findings suggest that use of cortical auditory evoked potentials may serve a preoperative role in ear selection prior to cochlear implantation.
authors.affiliation: The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA.
authors.forename: Tirth R
authors.initials: TR
authors.lastname: Patel
authors.affiliation: University of California Davis, Center for Mind and Brain, Davis, California, USA.
authors.forename: Antoine J
authors.initials: AJ
authors.lastname: Shahin
authors.affiliation: The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA.
authors.forename: Jyoti
authors.initials: J
authors.lastname: Bhat
authors.affiliation: Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA.
authors.forename: D Bradley
authors.initials: DB
authors.lastname: Welling
authors.affiliation: The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA Aaron.Moberly@osumc.edu.
authors.forename: Aaron C
authors.initials: AC
authors.lastname: Moberly
mesh_terms: D000368:Aged; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D019929:Cochlear Implantation / Q000379:methods*; D003054:Cochlear Implants; D003638:Deafness / Q000503:physiopathology / Q000534:rehabilitation*; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D006801:Humans; D008297:Male; D018579:Patient Selection; D013067:Speech Perception
keywords: auditory evoked potentials; cochlear implants; speech perception