Longitudinal study of the ecap measured in children with cochlear implants.
In children with cochlear implant (CI), the recording of the electrically evoked compound action potential (ECAP) of the auditory nerve represents an option to assess changes in auditory nerve responses and the interaction between the electrode bundle and the neural tissue over time.


OBJECTIVE
To study ECAP in children during the first year of CI use.


METHODS
The ECAP characteristics have been analyzed in 13 children implanted younger than three years of age. Series study.


RESULTS
During the first year of CI use there was a significant statistical raise in the N1 peak amplitude, in basal electrodes, between the second and third return visits. There were not any significant differences obtained for N1 peak, latency, slope, p-NRT or recovery time, in the return visits.


CONCLUSIONS
During the first year of CI use, the electrical stimulation provided by the intracochlear electrodes did not cause significant changes to ECAP characteristics, except for an increase in N1 peak amplitude.
Tanamati
Liege Franzini
LF
Faculdade de Medicina, Universidade de São Paulo.
Bevilacqua
Maria Cecília
MC
Costa
Orozimbo Alves
OA
D002675:Child, Preschool; D003054:Cochlear Implants; D003056:Cochlear Nerve / Q000502:physiology*; D004558:Electric Stimulation; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology* / Q000534:rehabilitation; D006801:Humans; D007223:Infant; D008137:Longitudinal Studies; D011930:Reaction Time; D012022:Reflex, Acoustic / Q000502:physiology; D013686:Telemetry