title: Cochlear implantation in patients with substantial residual hearing.
abstract: OBJECTIVE
  Cochlear implantation is an effective means for providing auditory rehabilitation in adult patients with severe to profound sensorineural hearing loss. It has been hypothesized that patients with substantial, preoperative residual hearing would be excellent cochlear implant candidates because of surviving neural populations and a lack of auditory deprivation. The purpose of this study is to describe the outcomes of patients with substantial residual hearing who have undergone cochlear implantation.
  
  
  METHODS
  Retrospective chart review of patients with substantial preoperative residual hearing who underwent cochlear implantation.
  
  
  METHODS
  Chart reviews were completed for patients with substantial residual hearing who underwent cochlear implantation (City University of New York Sentence Test [CUNY] > 60%, Hearing in Noise Test sentences presented in quiet [HINTQ] > 50%, or Consonant-Nucleus-Consonant [CNC] > 20% in the ear to be implanted). Preoperative and postoperative measures of audiologic performance as well as complications were assessed.
  
  
  RESULTS
  All 12 patients who met inclusion criteria ultimately surpassed their preoperative aided performance level after implantation and gained significant benefit from their cochlear implant. At 6 months postimplantation, mean CUNY, HINTQ, and CNC scores were 93%, 78%, and 48% in the implant ear alone, respectively. However, progress was slower than expected for many patients, and at least one patient took 1 year to surpass his preoperative performance level. There were no complications from surgery in this selected group of patients.
  
  
  CONCLUSIONS
  Patients with some degree of residual hearing do benefit from cochlear implantation. However, there may be an initial decline in performance as compared with preoperative levels. This decline is overcome in time in this patient population. These patients need to be counseled accordingly.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, U.S.A.
authors.forename: Robert D
authors.initials: RD
authors.lastname: Cullen
authors.forename: Carol
authors.initials: C
authors.lastname: Higgins
authors.forename: Emily
authors.initials: E
authors.lastname: Buss
authors.forename: Marcia
authors.initials: M
authors.lastname: Clark
authors.forename: Harold C
authors.initials: HC
authors.lastname: Pillsbury
authors.forename: Craig A
authors.initials: CA
authors.lastname: Buchman
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001299:Audiometry / Q000379:methods; D001309:Auditory Threshold; D019929:Cochlear Implantation / Q000379:methods*; D003054:Cochlear Implants; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis* / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D012189:Retrospective Studies; D018570:Risk Assessment; D016896:Treatment Outcome