1. Usefulness of measuring electrically evoked auditory brainstem responses in children with inner ear malformations during cochlear implantation.
- Author
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Minami, Shujiro B, Takegoshi, Hideki, Shinjo, Yukiko, Enomoto, Chieko, and Kaga, Kimitaka
- Subjects
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NEURAL physiology , *AUDITORY evoked response , *AUDITORY perception testing , *BRAIN stem , *COCHLEAR implants , *COMPUTED tomography , *HEARING impaired children , *INTRAOPERATIVE monitoring , *INNER ear , *RESEARCH funding , *SPEECH evaluation , *TREATMENT effectiveness , *DATA analysis software , *DESCRIPTIVE statistics , *CHILDREN - Abstract
Conclusions:EABR is a reliable and effective way of objectively confirming device function and implant-responsiveness of the peripheral auditory neurons up to the level of the brainstem in cases of inner ear malformation.Objective:To investigate the usefulness of measuring the intra-operative electrically evoked compound action potential (ECAP) and electrically evoked auditory brainstem response (EABR) in patients with and without congenital inner ear anomalies during cochlear implantation.Method:Thirty-eight consecutive children (40 ears) aged 5 or younger with congenital profound hearing loss. Twenty-four (25 ears) lacked congenital inner ear anomalies. The 14 patients (15 ears) with a malformation had common cavities (four ears), incomplete partition type I (three ears), cochlea hypoplasia type III (three ears), enlarged vestibular aqueduct (four ears), and cochlear nerve canal stenosis (one ear). Main outcome measures are ECAP and EABR responses.Results:Of the 25 ears lacking any malformation, 21, three, and one showed ‘Good’, ‘Variable’, and ‘No’ ECAP responses, respectively, and 24 and one showed ‘Good’ and ‘Variable’ intra-cochlear responses, respectively. Of the 15 ears with a malformation, two showed ‘Good’ ECAP responses, nine had ‘Variable’ ECAP responses, and four showed ‘No’ ECAP responses. Moreover, five showed ‘Good’ EABR responses and 10 showed ‘Variable’ EABR responses. [ABSTRACT FROM PUBLISHER]
- Published
- 2015
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