Limitation of High Pitch Sound Perception in Nontumor Patients with Auditory Brainstem Implantation / 대한이비인후과학회지
Korean Journal of Otolaryngology - Head and Neck Surgery
;
: 235-241, 2018.
Article
Dans Anglais
| WPRIM
| ID: wpr-714561
ABSTRACT
BACKGROUND AND OBJECTIVES:
Auditory brainstem implantation (ABI) is another option for hearing rehabilitation in non-neurofibromatosis type 2 patients who cannot undergo cochlear implantation (CI). However, the average performance of ABI is worse than that of CI. We analyzed the psycho-electrical parameters of each electrode and psycho-acoustic response to different frequency sounds in nontumor patients with ABI. SUBJECTS ANDMETHOD:
Sixteen patients with ABI from July 2008 to May 2013 were included in the study. They were followed up for 4 to 56 months. Among them, 12 were prelingual deaf with a narrow internal auditory canal or cochlear ossification. The remaining four were post-lingual deaf adults with severely ossified cochleae. We analyzed the electrical parameters [impedance, threshold level (T level), and dynamic range] of each of the 12 electrodes. We also evaluated the sound field pure-tone threshold, Ling 6 sound detection-identification test (Ling 6 test), and pitch ranking data of these patients.RESULTS:
The impedance, T level, and dynamic range did not significantly differ among electrodes. However, the pure-tone threshold to sound field stimulation was elevated in the high tone area, where more variables were found than in the low frequency area. Patients could not identify /S/ and /Sh/ sounds in the Ling 6 test. The mean T level and the dynamic range of the three highest pitch-perceiving electrodes in each patient was higher and narrower, respectively, than those of the three lowest pitch-perceiving electrodes.CONCLUSION:
The nontumor patients with ABI have difficulty perceiving high pitch sound. More sophisticated penetrating type electrodes and, if possible, bimodal stimulation with CI, could be considered.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Réadaptation
/
Implants cochléaires
/
Impédance électrique
/
Cochlée
/
Implantation cochléaire
/
Implantation auditive du tronc cérébral
/
Implants auditifs du tronc cérébral
/
Électrodes
/
Ouïe
/
Méthodes
Type d'étude:
Étude pronostique
Limites du sujet:
Adulte
/
Humains
langue:
Anglais
Texte intégral:
Korean Journal of Otolaryngology - Head and Neck Surgery
Année:
2018
Type:
Article
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