Long-term Hearing Preservation in Electric Acoustic Cochlear Implant Candidates.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
Georg Mathias SprinzlAstrid Magele

Abstract

To evaluate long-term stability and residual hearing preservation after cochlear implantation with electric acoustic stimulation (EAS). Retrospective chart-analysis. University clinic. Long- and short-term hearing preservation (HP) of 18 EAS subjects (21 ears) was evaluated. Short-term was defined as follow-ups less than 12 months after surgery versus long-term outcomes longer than 12 months postsurgery. Mean period of observation in the short-term group was 4 ± 3.0 months (range 0-7). In the long-term group the mean follow-up was 28.4 ± 15.0 months (range 12-58). Full insertion was possible in all 18 implanted subjects. In the short-term group, complete HP was achieved in 50%, partial HP in 33.3%, and minimal HP in 8.3% of the investigated subjects. One subject lost hearing completely. In the long-term group, complete HP was achieved in 50%, partial HP was observed in 40%, and minimal HP in 10% of the ears. No subject lost hearing completely. Subjects using EAS showed better word recognition scores after surgery (mean at 65 dB 55.3 ± 18.4; mean at 80 dB 68.1 ± 12.2) than subjects using electric stimulation only (mean at 65 dB 38.3 ± 18.1; mean at 80 dB 60.0 ± 16.4) with nonfunctional low-frequency hearing. The study confirms t...Continue Reading

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Citations

Apr 6, 2021·Acta Oto-laryngologica·Anandhan Dhanasingh, Ingeborg Hochmair
Apr 9, 2021·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Sonja LudwigDiana Arweiler-Harbeck

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