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      A Longitudinal Study in Children With Sequential Bilateral Cochlear Implants: Time Course for the Second Implanted Ear and Bilateral Performance

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          Abstract

          Purpose

          Whether, and if so when, a second-ear cochlear implant should be provided to older, unilaterally implanted children is an ongoing clinical question. This study evaluated rate of speech recognition progress for the second implanted ear and with bilateral cochlear implants in older sequentially implanted children and evaluated localization abilities.

          Method

          A prospective longitudinal study included 24 bilaterally implanted children (mean ear surgeries at 5.11 and 14.25 years). Test intervals were every 3–6 months through 24 months postbilateral. Test conditions were each ear and bilaterally for speech recognition and localization.

          Results

          Overall, the rate of progress for the second implanted ear was gradual. Improvements in quiet continued through the second year of bilateral use. Improvements in noise were more modest and leveled off during the second year. On all measures, results from the second ear were poorer than the first. Bilateral scores were better than either ear alone for all measures except sentences in quiet and localization.

          Conclusions

          Older sequentially implanted children with several years between surgeries may obtain speech understanding in the second implanted ear; however, performance may be limited and rate of progress gradual. Continued contralateral ear hearing aid use and reduced time between surgeries may enhance outcomes.

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          Author and article information

          Journal
          J Speech Lang Hear Res
          J. Speech Lang. Hear. Res
          JSLHR
          Journal of Speech, Language, and Hearing Research : JSLHR
          American Speech-Language-Hearing Association
          1092-4388
          1558-9102
          January 2017
          1 July 2017
          : 60
          : 1
          : 276-287
          Affiliations
          [a ]Washington University School of Medicine, St. Louis, MO
          [b ]St. Louis Children's Hospital, MO
          Author notes

          Disclosure: The authors have declared that no competing interests existed at the time of publication.

          Correspondence to Ruth M. Reeder: reederr@ 123456ent.wustl.edu

          Editor: Nancy Tye-Murray

          Associate Editor: Richard Dowell

          Article
          PMC5533558 PMC5533558 5533558 10924388006000010276
          10.1044/2016_JSLHR-H-16-0175
          5533558
          28060992
          9ba073fa-c9b4-480b-a96a-e69b27fbc25f
          Copyright © 2017 American Speech-Language-Hearing Association
          History
          : 02 May 2016
          : 21 July 2016
          : 04 August 2016
          Page count
          Pages: 12
          Funding
          This work was supported by R01DC009010 from the National Institute on Deafness and Other Communication Disorders.
          Categories
          Hearing
          Research Articles

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