Thompson Nicholas J, Brown Kevin D, Buss Emily, Rooth Meredith A, Richter Margaret E, Dillon Margaret T
Department of Otolaryngology-Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, U.S.A.
Division of Speech and Hearing Sciences, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, U.S.A.
Laryngoscope. 2023 Jun;133(6):1480-1485. doi: 10.1002/lary.30368. Epub 2022 Aug 29.
To assess long-term binaural hearing abilities for cochlear implant (CI) users with unilateral hearing loss (UHL) or asymmetric hearing loss (AHL).
A prospective, longitudinal, repeated measures study was completed at a tertiary referral center evaluating adults with UHL or AHL undergoing cochlear implantation. Binaural hearing abilities were assessed with masked speech recognition tasks using AzBio sentences in a 10-talker masker. Performance was evaluated as the ability to benefit from spatial release from masking (SRM). SRM was calculated as the difference in scores when the masker was presented toward the CI-ear (SRM ) or the contralateral ear (SRM ) relative to the co-located condition (0°). Assessments were completed pre-operatively and at annual intervals out to 5 years post-activation.
Twenty UHL and 19 AHL participants were included in the study. Linear Mixed Models showed significant main effects of interval and group for SRM . There was a significant interaction between interval and group, with UHL participants reaching asymptotic performance early and AHL participants demonstrating continued growth in binaural abilities to 5 years post-activation. The improvement in SRM showed a significant positive correlation with contralateral unaided hearing thresholds (p = 0.050) as well as age at implantation (p = 0.031).
CI recipients with UHL and AHL showed improved SRM with long-term device use. The time course of improvement varied by cohort, with the UHL cohort reaching asymptotic performance early and the AHL cohort continuing to improve beyond 1 year. Differences between cohorts could be driven by differences in age at implantation as well as contralateral unaided hearing thresholds.
3 Laryngoscope, 133:1480-1485, 2023.
评估单侧听力损失（UHL）或不对称听力损失（AHL）的人工耳蜗（CI）使用者的长期双耳听力能力。
在一家三级转诊中心完成了一项前瞻性、纵向、重复测量研究，评估接受人工耳蜗植入的UHL或AHL成人。使用AzBio句子在10说话者掩蔽器中通过掩蔽语音识别任务评估双耳听力能力。将表现评估为从掩蔽空间释放（SRM）中获益的能力。SRM计算为掩蔽器朝向CI耳（SRM ）或对侧耳（SRM ）相对于同位置条件（0°）时得分的差异。术前及激活后每年进行评估，直至5年。
20名UHL参与者和19名AHL参与者纳入研究。线性混合模型显示间隔和组对SRM有显著的主效应。间隔和组之间存在显著交互作用，UHL参与者早期达到渐近表现，AHL参与者在激活后5年双耳能力持续增长。SRM的改善与对侧未助听听力阈值（p = 0.050）以及植入时年龄（p = 0.031）呈显著正相关。
UHL和AHL的CI接受者长期使用设备后SRM有所改善。改善的时间进程因队列而异，UHL队列早期达到渐近表现，AHL队列在1年后继续改善。队列之间的差异可能由植入时年龄以及对侧未助听听力阈值的差异驱动。
3 喉镜，133:1480 - 1485，2023。
