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- Title
Cochlear Implantation in Cases of Asymmetric Hearing Loss: Subjective Benefit, Word Recognition, and Spatial Hearing.
- Authors
Dillon, Margaret T.; Buss, Emily; Rooth, Meredith A.; King, English R.; McCarthy, Sarah A.; Bucker, Andrea L.; Deres, Ellen J.; Richter, Margaret E.; Thompson, Nicholas J.; Canfarotta, Michael W.; O'Connell, Brendan P.; Pillsbury, Harold C.; Brown, Kevin D.
- Abstract
A prospective clinical trial evaluated the effectiveness of cochlear implantation in adults with asymmetric hearing loss (AHL). Twenty subjects with mild-to-moderate hearing loss in the better ear and moderate-to-profound hearing loss in the poorer ear underwent cochlear implantation of the poorer hearing ear. Subjects were evaluated preoperatively and at 1, 3, 6, 9, and 12 months post-activation. Preoperative performance was evaluated unaided, with traditional hearing aids (HAs) or with a bone-conduction HA. Post-activation performance was evaluated with the cochlear implant (CI) alone or in combination with a contralateral HA (bimodal). Test measures included subjective benefit, word recognition, and spatial hearing (i.e., localization and masked sentence recognition). Significant subjective benefit was reported as early as the 1-month interval, indicating better performance with the CI compared with the preferred preoperative condition. Aided word recognition with the CI alone was significantly improved at the 1-month interval compared with preoperative performance with an HA and continued to improve through the 12-month interval. Subjects demonstrated early, significant improvements in the bimodal condition on the spatial hearing tasks compared with baseline preoperative performance tested unaided. The magnitude of the benefit was reduced for subjects with AHL when compared with published data on CI users with normal hearing in the contralateral ear; this finding may reflect significant differences in age at implantation and hearing sensitivity across cohorts.
- Subjects
TREATMENT of hearing disorders; BONE conduction; CLINICAL trials; COCHLEAR implants; ELECTRODES; LONGITUDINAL method; HEALTH outcome assessment; RECOGNITION (Psychology); SOUND; SPACE perception; TIME; PREOPERATIVE period; DATA analysis software; DESCRIPTIVE statistics; ADULTS
- Publication
Trends in Hearing, 2020, p1
- ISSN
2331-2165
- Publication type
Article
- DOI
10.1177/2331216520945524