Performance Plateau in Prelingually and Postlingually Deafened Adult Cochlear Implant Recipients.

Objective: To characterize the performance plateau after unilateral cochlear implantation (CI) in prelingually and postlingually deafened adults and to compare their relative progress. Study Design: Retrospective chart review. Setting: Tertiary referral center. Patients: Prelingually and postlingually deaf adults who received a unilateral CI and completed a minimum of 2 years of follow-up at our center. Intervention: Unilateral CI. Main Outcome Measures: : Standard speech perception testing (consonant-nucleus-consonant [CNC] monosyllabic word test and hearing in noise test [HINT] or AzBio sentence test) were performed preoperatively and 3 and 12 months postoperatively, and annually thereafter. Results: In postlingually deaf patients (n = 102), there was a significant improvement in word scores for 3 years postimplantation (p

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