Implante coclear: correlação da recuperação neural, privação auditiva e etiologia

Kutscher, Kellen; Goffi-Gómez, María Valéria Schmidt; Befi-Lopes, Débora Maria; Tsuji, Robinson Koji; Bento, Ricardo Ferreira

doi:10.1590/s0104-56872010000400019

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…RECs are extracted from the neural response amplitude as a function of the interval between the stimulus and the masker stimulus (interpulse interval) and can be measured with NRT using the subtraction technique. 4 5 …”

Section: Introductionmentioning

confidence: 99%

Intraoperative Neural Response Telemetry and Neural Recovery Function: a Comparative Study between Adults and Children

Carvalho

Hamerschmidt

Wiemes

2014

Int. Arch. Otorhinolaryngol.

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Introduction Neural response telemetry (NRT) is a method of capturing the action potential of the distal portion of the auditory nerve in cochlear implant (CI) users, using the CI itself to elicit and record the answers. In addition, it can also measure the recovery function of the auditory nerve (REC), that is, the refractory properties of the nerve. It is not clear in the literature whether the responses from adults are the same as those from children. Objective To compare the results of NRT and REC between adults and children undergoing CI surgery. Methods Cross-sectional, descriptive, and retrospective study of the results of NRT and REC for patients undergoing IC at our service. The NRT is assessed by the level of amplitude (microvolts) and REC as a function of three parameters: A (saturation level, in microvolts), t0 (absolute refractory period, in seconds), and tau (curve of the model function), measured in three electrodes (apical, medial, and basal). Results Fifty-two patients were evaluated with intraoperative NRT (26 adults and 26 children), and 24 with REC (12 adults and 12 children). No statistically significant difference was found between intraoperative responses of adults and children for NRT or for REC's three parameters, except for parameter A of the basal electrode. Conclusion The results of intraoperative NRT and REC were not different between adults and children, except for parameter A of the basal electrode.

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Section: Introductionmentioning

confidence: 99%

Intraoperative Neural Response Telemetry and Neural Recovery Function: a Comparative Study between Adults and Children

Carvalho

Hamerschmidt

Wiemes

2014

Int. Arch. Otorhinolaryngol.

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“…In a retrospective study, Kutscher et al 27 evaluated children and adults regarding REC measurements and their correlation with etiology, the duration of the HL, and the duration of the use of hearing aids before the CI. There was no statistically significant correlation between the analyzed factors and the REC.…”

Section: Discussionmentioning

confidence: 99%

Neural Recovery Function of the Auditory Nerve in Cochlear Implant Surgery: Comparison between Prelingual and Postlingual Patients

Carvalho

Wiemes

Netto

et al. 2020

Int Arch Otorhinolaryngol

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Introduction Cochlear implants (CIs) enable objective measures of the neural function in implanted patients through the measurements of the neural response telemetry (NRT) and of the Auditory nerve Recovery Function (REC). These measurements help in programming the speech processor and understanding the auditory system. Objective To compare the NRT and the REC in prelingual and postlingual implanted patients. Methods An observational, descriptive and prospective study was carried out. The NRT and the REC (through the T0, A, and tau parameters) were evaluated in individuals submitted to CI surgery, who were divided into two groups: prelingual and postlingual patients. Results In total, 46 patients were evaluated. Data analysis showed no statistically significant difference between the NRT measurements and the T0, A, and Tau of the REC in the comparison between the two groups, except for the NRT in the basal cochlear region. Conclusion There was no statistically significant difference in the REC in pre- and postlingual patients.

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“…Subject 8 showed poorer SPT results probably owing to meningitis as the etiology of hearing loss, in agreement with studies reporting a poorer SPT performance in adults with post-meningitis deafness. 20 21 …”

Section: Discussionmentioning

confidence: 99%

Auditory Speech Perception Tests in Relation to the Coding Strategy in Cochlear Implant

Bazon

Mantello

Gonçales

et al. 2015

Int Arch Otorhinolaryngol

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Introduction The objective of the evaluation of auditory perception of cochlear implant users is to determine how the acoustic signal is processed, leading to the recognition and understanding of sound.Objective To investigate the differences in the process of auditory speech perception in individuals with postlingual hearing loss wearing a cochlear implant, using two different speech coding strategies, and to analyze speech perception and handicap perception in relation to the strategy used.Methods This study is prospective cross-sectional cohort study of a descriptive character. We selected ten cochlear implant users that were characterized by hearing threshold by the application of speech perception tests and of the Hearing Handicap Inventory for Adults.Results There was no significant difference when comparing the variables subject age, age at acquisition of hearing loss, etiology, time of hearing deprivation, time of cochlear implant use and mean hearing threshold with the cochlear implant with the shift in speech coding strategy. There was no relationship between lack of handicap perception and improvement in speech perception in both speech coding strategies used.Conclusion There was no significant difference between the strategies evaluated and no relation was observed between them and the variables studied.

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Implante coclear: correlação da recuperação neural, privação auditiva e etiologia

Cited by 5 publications

References 16 publications

Intraoperative Neural Response Telemetry and Neural Recovery Function: a Comparative Study between Adults and Children

Intraoperative Neural Response Telemetry and Neural Recovery Function: a Comparative Study between Adults and Children

Neural Recovery Function of the Auditory Nerve in Cochlear Implant Surgery: Comparison between Prelingual and Postlingual Patients

Auditory Speech Perception Tests in Relation to the Coding Strategy in Cochlear Implant

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