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

Objective: To evaluate hearing preservation (HP) outcomes in adult cochlear implant recipients with a mid-scala electrode. Setting: Tertiary academic center. Patients: Adult patients implanted with a mid-scala electrode between May 2013 and July 2015. Interventions: Cochlear implantation. Main Outcome Measure(s): Age, sex, surgical approach, residual hearing changes post cochlear implantation, HP rates using different published classifications, and speech perception scores. Results: Fifty ears for 47 patients (mean age, 58.2 yr; range, 23-86) were implanted with the electrode. Recognizing that not all patients were true HP candidates and/or underwent generally accepted HP surgical techniques, 39 ears had preoperative low-frequency hearing (audiometric threshold 0.05). Conclusion: The mid-scala electrode evaluated allows preservation of low-frequency hearing in patients undergoing cochlear implantation at rates and degrees of preservation close to other reports in the cochlear implant literature. Copyright (C) 2016 by Otology & Neurotology, Inc. Image copyright (C) 2010 Wolters Kluwer Health/Anatomical Chart Company

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