Preserved Low-Frequency Hearing Following 20-mm Cochlear Implantation. Issue 2 (February 2015)

• Record Type: Journal Article
• Authors: Brown, Kevin D.; Melton, Myles F.; Shonfield, Hannah; Kraskin, Michelle; Wolf, Jennifer
• Is Part Of: Otology & neurotology. Volume 36:Issue 2(2015)
• Publication Date: 2015-02
• Subjects: Cochlear implant -- Hearing preservation -- Low frequency; Otology -- Periodicals; Ear -- Diseases -- Periodicals; Skull base -- Surgery -- Periodicals; 617.8005
• DOI: 10.1097/MAO.0000000000000684
• Languages: English
• ISSNs: 1531-7129

Abstract

Abstract : Objective: To determine the preservation of pure tone thresholds for a series of cochlear implant patients who underwent atraumatic round window insertion with a new thin 22-mm electrode to a 20-mm depth. Study Design: Retrospective, within-subject repeated measures design. Setting: Tertiary care hospital. Patients: Nine sequential cochlear implant patients with functional preoperative acoustic hearing (defined as low-frequency pure tone average thresholds ⩽90 dB). Intervention: Therapeutic. Main Outcome Measure: Pure tone thresholds after cochlear implantation. Results: Low-frequency hearing preservation was achieved in all cases. Less than 10 dB average change was seen for low-frequency pure tone average measures (125, 250, 500, and 1, 000 Hz) at 6 and 12 months following cochlear implantation. Conclusions: Atraumatic round window insertion with a thin 22-mm electrode to a 20-mm depth results in dramatically high levels of acoustic hearing preservation among CI patients.