title: [Study of electrode impedance and NRT value characteristics with cochlear implants in children with malformed inner ear and normal inner ear].
abstract: OBJECTIVE
  To investigate the changes and determine the difference of electrode impedance and neural response telemetry ( NRT) value with cochlear implants in children with malformed inner ear and normal inner ear.
  
  
  METHODS
  Eighty-eight children with multi-channel cochlear implants participated in this study. Children were divided into malformed inner ear group and normal inner ear group. To test the electrode impedance values and NRT value.
  
  
  RESULTS
  The changes of electrode impedance showed the similar changing pattern in two groups. There was not different in electrode impedance values between the two groups (P > 0.05). The changes of electrode neural response telemetry values showed the similar changing pattern in two groups. There was significantly different in electrode impedance values between the two groups (P < 0.05). The NRT were going up higher from electrode 22 to electrode 1.
  
  
  CONCLUSIONS
  The values vary are different programming sessions and electrodes during the first 3 months of cochlear implant use. To acquire better hearing frequent programming sessions are necessary.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Qiao
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation; D003054:Cochlear Implants; D003056:Cochlear Nerve; D007758:Ear, Inner / Q000002:abnormalities / Q000503:physiopathology* / Q000601:surgery; D017097:Electric Impedance; D004566:Electrodes; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male