Impact of Intrascalar Electrode Location, Electrode Type, and Angular Insertion Depth on Residual Hearing in Cochlear Implant Patients

Wanna, George B.; Noble, Jack H.; Gifford, René H.; Dietrich, Mary S.; Sweeney, Alex D.; Zhang, Dongqing; Dawant, Benoît M.; Rivas, Alejandro; Labadie, Robert F.

doi:10.1097/mao.0000000000000829

Cited by 102 publications

(95 citation statements)

References 41 publications

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“…To control for the degree of insertion trauma associated with interscalar excursion, only patients with an electrode array in the scala tympani were included, as determined by a previously validated method of intracochlear electrode array localization. 15,16 The findings from this study challenge the reliability of age as a predictive factor for durable hearing preservation and suggest that such preservation may have an association with the use of a nonstyleted lateral wall electrode.…”

Section: Discussionmentioning

confidence: 65%

Durability of Hearing Preservation after Cochlear Implantation with Conventional‐Length Electrodes and Scala Tympani Insertion

Sweeney

Hunter

Carlson

et al. 2016

Otolaryngol.--head neck surg.

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Objectives To analyze factors that influence hearing preservation over time in cochlear implant recipients with conventional-length electrode arrays located entirely within the scala tympani. Study Design Case series with planned chart review. Setting Single tertiary academic referral center. Subjects and Methods A retrospective review was performed to analyze a subgroup of cochlear implant recipients with residual acoustic hearing. Patients were included in the study only if their electrode arrays remained fully in the scala tympani after insertion and serviceable acoustic hearing (≤80 dB at 250 Hz) was preserved. Electrode array location was verified through a validated radiographic assessment tool. Patients with <6 months of audiologic follow-up were excluded. The main outcome measure was change in acoustic hearing thresholds from implant activation to the last available follow-up. Results A total of 16 cases met inclusion criteria (median age, 70.6 years; range, 29.4–82.2; 50% female). The average follow-up was 18.0 months (median, 16.1; range, 6.2–36.4). Patients with a lateral wall electrode array were more likely to have stable acoustic thresholds over time (P < .05). Positive correlations were seen between continued hearing loss following activation and larger initial postoperative acoustic threshold shifts, though statistical significance was not achieved. Age, sex, and noise exposure had no significant influence on continued hearing preservation over time. Conclusions To control for hearing loss associated with inter-scalar excursion during cochlear implantation, the present study evaluated patients only with conventional electrode arrays located entirely within the scala tympani. In this group, the style of electrode array may influence residual hearing preservation over time.

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Section: Discussionmentioning

confidence: 65%

Durability of Hearing Preservation after Cochlear Implantation with Conventional‐Length Electrodes and Scala Tympani Insertion

Sweeney

Hunter

Carlson

et al. 2016

Otolaryngol.--head neck surg.

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“…Third, though more than 90% of our study patients continued to undergo postoperative audiologic testing at our institution, one might presume that those who did not follow up postoperatively had poor audiologic outcomes, which would lower our hearing preservation rates. Lastly, since previous studies have shown that electrode location influences audiologic outcomes, we did not control for electrode location (28,29).…”

Section: Discussionmentioning

confidence: 99%

Hearing Preservation Outcomes With a Mid-Scala Electrode in Cochlear Implantation

Hunter

Gifford

Wanna

et al. 2016

Otology &Amp; Neurotology

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“…Positioning of the electrode in the scala tympani was reported to produce better results, compared to positioning in the scala vestibuli, in terms of speech recognition score in CI patients (Skinner et al, 2007;Aschendorff et al, 2007;Holden et al, 2013); however, other studies found no difference in speech recognition (Wanna et al, 2011); nevertheless, a relationship was found between translocation and hearing preservation (Wanna et al, 2015).…”

Section: Introductionmentioning

confidence: 97%

Damage to inner ear structure during cochlear implantation: Correlation between insertion force and radio-histological findings in temporal bone specimens

et al. 2017

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Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Accepted ManuscriptDamage to inner ear structure during cochlear implantation: Correlation between insertion force and radio-histological findings in temporal bone specimens This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. and atraumatic insertions; these values should be considered during motorized insertion of an implant so as to be able to modify the insertion parameters (e.g axis of insertion) and facilitate preservation of endocochlear structures.

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Impact of Intrascalar Electrode Location, Electrode Type, and Angular Insertion Depth on Residual Hearing in Cochlear Implant Patients

Cited by 102 publications

References 41 publications

Durability of Hearing Preservation after Cochlear Implantation with Conventional‐Length Electrodes and Scala Tympani Insertion

Durability of Hearing Preservation after Cochlear Implantation with Conventional‐Length Electrodes and Scala Tympani Insertion

Hearing Preservation Outcomes With a Mid-Scala Electrode in Cochlear Implantation

Damage to inner ear structure during cochlear implantation: Correlation between insertion force and radio-histological findings in temporal bone specimens

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