title: Prediction of Cochlear Implant Outcomes in Patients With Prelingual Deafness.
abstract: OBJECTIVE
  To evaluate the factors that limit post-cochlear implantation (CI) speech perception in prelingually deaf children.
  
  
  METHODS
  Patients with CI were divided into two groups according to Category of Auditory Performance (CAP) scores 3 years post-CI: the poor performance group (poor performance group, CAP scores≤4, n=41) and the good performance group (good performance group, CAP scores≥5, n=85). The distribution and contribution of the potential limiting factors related to post-CI speech perception was compared.
  
  
  RESULTS
  Perinatal problems, inner ear anomalies, narrow bony cochlear nerve canal (BCNC), and intraoperative problems was significantly higher in the poor performance group than the good performance group (P=0.010, P=0.003, P=0.001, and P=0.045, respectively). The mean number of limiting factors was significantly higher in the poor performance group (1.98±1.04) than the good performance group (1.25±1.11, P=0.001). The odds ratios for perinatal problems and narrow bony cochlear nerve canal in the poor performance group in comparison with the good performance group were 4.878 (95% confidence interval, 0.067 to 0.625; P=0.005) and 4.785 (95% confidence interval, 0.045 to 0.972; P=0.046).
  
  
  CONCLUSIONS
  This study highlights the comprehensive prediction of speech perception after CI and provides otologic surgeons with useful information for individualized preoperative counseling of CI candidates.
authors.affiliation: Department of Otorhinolaryngology, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Dong Hoon
authors.initials: DH
authors.lastname: Kang
authors.affiliation: Department of Otorhinolaryngology, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Myoung Jin
authors.initials: MJ
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Kyu-Yup
authors.initials: KY
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology, Daegu Veterans Hospital, Daegu, Korea.
authors.forename: Sang Heun
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology, Kyungpook National University School of Medicine, Daegu, Korea.|Department of Otorhinolaryngology, Ajou University School of Medicine, Suwon, Korea.
authors.forename: Jeong Hun
authors.initials: JH
authors.lastname: Jang
keywords: Cochlear Implantation; Language Development; Prognosis; Sensorineural Hearing Loss; Speech Perception