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dc.contributor.authorO'Leary, S
dc.contributor.authorBriggs, R
dc.contributor.authorGerard, J-M
dc.contributor.authorIseli, C
dc.contributor.authorWei, BPC
dc.contributor.authorTari, S
dc.contributor.authorRousset, A
dc.contributor.authorBester, C
dc.date.accessioned2020-12-09T22:17:23Z
dc.date.available2020-12-09T22:17:23Z
dc.date.issued2020-10-01
dc.identifierpii: 00129492-202010000-00014
dc.identifier.citationO'Leary, S., Briggs, R., Gerard, J. -M., Iseli, C., Wei, B. P. C., Tari, S., Rousset, A. & Bester, C. (2020). Intraoperative Observational Real-time Electrocochleography as a Predictor of Hearing Loss After Cochlear Implantation: 3 and 12 Month Outcomes. OTOLOGY & NEUROTOLOGY, 41 (9), pp.1222-1229. https://doi.org/10.1097/MAO.0000000000002773.
dc.identifier.issn1531-7129
dc.identifier.urihttp://hdl.handle.net/11343/252914
dc.description.abstractOBJECTIVE: A decrease in intracochlear electrocochleographic (ECochG) amplitude during cochlear implantation has been associated with poorer postoperative hearing preservation in several short-term studies. Here, we relate the stability of ECochG during surgery to hearing preservation at 3- and 12-months. METHODS: Patients with hearing ≤80-dB HL at 500 Hz were implanted with a slim-straight electrode array. ECochG responses to short, high-intensity, 500-Hz pure tones of alternating polarity were recorded continuously from the apical-most electrode during implantation. No feedback was provided to the surgeon. ECochG amplitude was derived from the difference response, and implantations classified by the presence ("ECochG drop") or absence ("no drop") of a ≥30% reduction in ECochG amplitude during insertion. Residual hearing (relative and absolute) was reported against the ECochG class. RESULTS: ECochG was recorded from 109 patients. Of these, interpretable ECochG signals were recorded from 95. Sixty-six of 95 patients had an ECochG drop during implantation. Patients with an ECochG drop had poorer preoperative hearing above 1000 Hz. Hearing preservation (in decibels, relative to preoperative levels and functionally) was significantly poorer at 250-, 500-, and 1000-Hz at 3 months in patients exhibiting an ECochG drop. Twelve-month outcomes were available from 85 patients, with significantly poorer functional hearing, and greater relative and absolute hearing loss from 250 to 1000 Hz, when an ECochG drop had been encountered. CONCLUSION: Patients exhibiting ECochG drops during implantation had significantly poorer hearing preservation 12 months later. These observational outcomes support the future development of surgical interventions responsive to real-time intracochlear ECochG. Early intervention to an ECochG drop could potentially lead to prolonged improvements in hearing preservation.
dc.languageEnglish
dc.publisherLIPPINCOTT WILLIAMS & WILKINS
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0
dc.titleIntraoperative Observational Real-time Electrocochleography as a Predictor of Hearing Loss After Cochlear Implantation: 3 and 12 Month Outcomes
dc.typeJournal Article
dc.identifier.doi10.1097/MAO.0000000000002773
melbourne.affiliation.departmentOtolaryngology
melbourne.affiliation.departmentAudiology and Speech Pathology
melbourne.affiliation.departmentSurgery (RMH)
melbourne.source.titleOtology and Neurotology: an international forum
melbourne.source.volume41
melbourne.source.issue9
melbourne.source.pages1222-1229
dc.rights.licenseCC BY-NC-ND
melbourne.elementsid1454894
melbourne.contributor.authorBester, Christofer
melbourne.contributor.authorWei, Benjamin
melbourne.contributor.authorO'Leary, Stephen
melbourne.contributor.authorBriggs, Robert
melbourne.contributor.authorIseli, Claire
melbourne.contributor.authorGerard, Jean-Marc
melbourne.contributor.authorRousset, Alexandra
dc.identifier.eissn1537-4505
melbourne.accessrightsOpen Access


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