• The Laryngoscope · Aug 2018

    Long-term outcomes of cochlear implantation in patients with high-frequency hearing loss.

    • J Thomas Roland, Bruce J Gantz, Susan B Waltzman, and Aaron J Parkinson.
    • Department of Otolaryngology-Head and Neck Surgery, NYU School of Medicine, New York, New York.
    • Laryngoscope. 2018 Aug 1; 128 (8): 1939-1945.

    ObjectiveTo demonstrate the long-term benefits of implantation in patients with high-frequency sensorineural hearing loss, this report provides 5-year follow-up on a group of implant recipients who were subjects of the Cochlear™ Nucleus® Hybrid™ L24 Implant System pivotal clinical study.MethodsThe results of three related clinical studies were compiled to provide outcome data after 1, 3, and 5 years of implant use in a group of subjects who presented with preoperative high-frequency hearing loss and were implanted with a Nucleus Hybrid L24 (Cochlear Ltd., Sydney, Australia) cochlear implant. A subset of the 50 adult subjects (N = 32) who participated in the Hybrid L24 pivotal Investigational Device Exemption (IDE) completed comprehensive evaluations at 12 months postactivation, 3 years postactivation, and then as part of a postapproval study at 5 years postactivation. Testing included audiometric, speech perception, and subjective satisfaction measures.ResultsMean unilateral speech perception performance was significantly improved at all postoperative intervals compared to preoperative best-aided results and has remained stable to 5 years postactivation. Ninety-four percent of subjects had measurable hearing, and 72% continued to use electric-acoustic stimulation in the implanted ear after 5 years of implant use. Subjective satisfaction results support objective performance improvements.ConclusionResults demonstrate long-term success of patients with high-frequency hearing loss following Hybrid L24 (Cochlear) cochlear implantation. Benefits include speech perception abilities significantly better than those in the preoperative best-aided condition, with additional benefit in those using electric-acoustic stimulation in the implanted ear.Level Of Evidence2b. Laryngoscope, 1939-1945, 2018.© 2018 The American Laryngological, Rhinological and Otological Society, Inc.

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