کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4107212 | 1605415 | 2007 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Influence of Evoked Compound Action Potential on Speech Perception in Cochlear Implant Users Influence of Evoked Compound Action Potential on Speech Perception in Cochlear Implant Users](/preview/png/4107212.png)
SummaryElectrically Evoked Compound Action Potential is a measure of synchronous cochlear nerve fibers activity elicited by electrical stimulation of the cochlear implant. The electrophysiological nerve responses may contribute to explain the variability in individual performance of cochlear implant recipients.AimTo compare speech perception tests’ performances of cochlear implant users according to the presence or absence of intraoperative neural telemetry responses.Material and MethodProspective study design with 100 “Nucleus 24” cochlear implant users divided in two groups according to the presence or absence of intraoperative neural telemetry responses. Speech perception tests were performed after 6 months of continuous use of the device and compared among groups.ResultsIntraoperative action potentials were observed in 72 % of individuals. Open-set sentence test results were better in implant users who had neural telemetry responses when compared to implant users in whom this potential was absent (averages 82.8 % versus 41 %, p = 0.005). There was a strong association between post meningitis-related deafness and absence of intraoperative potentials.ConclusionThe absence of intraoperative neural telemetry responses was associated with worse performances in speech perception tests and meningitis as etiology of deafness. On the other hand, the presence of these potentials suggests excellent prognosis.
Journal: Brazilian Journal of Otorhinolaryngology - Volume 73, Issue 4, July–August 2007, Pages 439–445