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Electrically evoked auditory brain-stem response in pediatric patients with cochlear implants.

P R Kileny·T A Zwolan·S Zimmerman-Phillips·S A Telian
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Abstract

OBJECTIVE: To study the feasibility and clinical applicability of preoperative, transtympanic electrically evoked auditory brain-stem response (EABR) in a pediatric patient population with cochlear implants. DESIGN: A descriptive study using repeated measures analyses of variance to determine if EABR measures were affected by response configuration or cochlear status. SETTING: The operating room before cochlear implant surgery. PATIENTS: A population-based sample of 43 patients aged 2.5 to 14.5 years who were candidates for cochlear implantation. INTERVENTION: Stimuli consisting of brief balanced biphasic current pulses were provided by a transtympanically placed promontory needle electrode; EABR was recorded with subdermal needle electrodes on the forehead and contralateral mastoid. MAIN OUTCOME MEASURE: Presence or absence of postoperative electrical excitability with a cochlear implant. RESULTS: Electrically evoked auditory brain-stem responses were available from 41 of the 43 patients tested. Mean EABR threshold was 406.5 microA (SD = 118.1) for 31 patients with patent cochleas and 472 microA (SD = 91) for 10 patients with cochlear ossification. Mean wave V latency at threshold was 4.69 milliseconds (SD = 0.57). CONCLUSION: Preoperative EABR is an integral component of the preoperative selection process for pediatric patients with cochlear implants.

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AdolescentAudiometry, Pure-ToneAuditory ThresholdChildChild, PreschoolCochlear DiseasesCochlear ImplantsDeafnessElectric StimulationEvoked Potentials, Auditory, Brain StemFeasibility StudiesFemaleHumansMaleReaction TimeSpeech IntelligibilitySpeech PerceptionCase ReportsJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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P R Kileny, T A Zwolan, S Zimmerman-Phillips, S A Telian. 1994. Electrically evoked auditory brain-stem response in pediatric patients with cochlear implants.. https://doi.org/10.1001/archotol.1994.01880340029006

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