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  • Title: [Analysis of one-year outcomes after cochlear implantation in adults with single-sided deafness].
    Author: Chen JY, Chen B, Shi Y, Zhang LF, Gao ZC, Kong Y, Li YX.
    Journal: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi; 2024 Jun 07; 59(6):602-613. PubMed ID: 38965850.
    Abstract:
    Objectives: To investigate the outcomes of cochlear implantation in Mandarin-speaking cochlear implant (CI) users with single-sided deafness (SSD). Methods: This study was a single-center prospective cohort study. Eleven Mandarin-speaking adult SSD patients who underwent CI implantation at Capital Medical University Beijing Tongren Hospital from August 2020 to October 2021 were recruited, including 6 males and 5 females, with the age ranging from 24 to 50 years old. In a sound field with 7 loudspeakers distributed at 180°, we measured root-mean-square error(RMSE)in SSD patients at the preoperative, 1-month, 3-month, 6-month, and 12-month after switch-on to assess the improvement of sound source localization. The Mandarin Speech Perception (MSP) was used in the sound field to test the speech reception threshold (SRT) of SSD patients under different signal-to-noise locations in a steady-state noise under conditions of CI off and CI on, to reflect the head shadow effect(SSSDNNH), binaural summation effect(S0N0) and squelch effect(S0NSSD). The Tinnitus Handicap Inventory (THI) and the Visual Analogue Scale (VAS) were used to assess changes in tinnitus severity and tinnitus loudness in SSD patients at each time point. The Speech, Spatial and Qualities of Hearing Scale(SSQ) and the Nijmegen Cochlear Implantation Scale (NCIQ) were used to assess the subjective benefits of spatial speech perception and quality of life in SSD patients after cochlear implantation. SPSS 19.0 software was used for statistical analysis. Results: SSD patients showed a significant improvement in the poorer ear in hearing thresholds with CI-on compared with CI-off; The ability to localize the sound source was significantly improved, with statistically significant differences in RMSE at each follow-up time compared with the preoperative period (P<0.05). In the SSSDNNH condition, which reflects the head shadow effect, the SRT in binaural hearing was significantly improved by 6.5 dB compared with unaided condition, and the difference was statistically significant (t=6.25, P=0.001). However, there was no significant improvement in SRT between the binaural hearing condition and unaided conditions in the S0N0 and S0NSSD conditions (P>0.05). The total score of THI and three dimensions were significant decreased (P<0.05). Tinnitus VAS scores were significantly lower in binaural hearing compared to the unaided condition (P<0.001). The total score of SSQ, and the scores of speech and spatial dimensions were significant improved in binaural hearing compared to the unaided condition (P<0.001). There was no statistical difference in NCIQ questionnaire scores between preoperative and postoperative (P>0.05), and only the self-efficacy subscore showed a significant increase(Z=-2.497,P=0.013). Conclusion: CI could help Mandarin-speaking SSD patients restore binaural hearing to some extent, improve sound localization and speech recognition in noise. In addition, CI in SSD patients could suppress tinnitus, reduce the loudness of tinnitus, and improve subjective perceptions of spatial hearing and quality of life. 目的： 评估汉语普通话成人单侧聋（single-sided deafness，SSD）患者人工耳蜗（CI）植入术后1年的康复效果。 方法： 本研究为单中心前瞻性队列研究，选取2020年8月至2021年10月在首都医科大学附属北京同仁医院接受CI植入的11例母语为汉语普通话的成人SSD患者作为研究对象，其中男性6例、女性5例，年龄24~50岁。在180°平均分布7个扬声器的声场中，测试患者术前、术后CI开机1、3、6和12个月时的声源定位角度均方根误差（root-mean-square error，RMSE），评估患者声源定位能力的改善情况。在声场中采用“空间言语评估系统”，测试患者在稳态噪声环境中不同信噪方位下裸耳（CI off）和助听（CI on）条件下的言语接受阈（speech reception threshold，SRT），以反映患者头影效应、双耳总和效应和静噪效应的获益情况。采用耳鸣致残量表（Tinnitus Handicap Inventory，THI）和视觉模拟评分（Visual Analogue Scale，VAS）评估SSD患者在术前、术后1个月、开机1个月、开机3个月、开机6个月和开机12个月时的耳鸣困扰和耳鸣响度的变化情况。采用言语、空间和音质听觉量表（The Speech，Spatial and Qualities of Hearing Scale，SSQ）和Nijmegen人工耳蜗植入量表（Nijmegen Cochlear Implant Questionnaire，NCIQ）评估患者CI植入后空间言语感知和生活质量等多方面主观获益情况。采用SPSS19.0软件进行相应统计学分析。 结果： SSD患者佩戴CI后，患耳助听听阈较裸耳听阈有明显改善；声源定位能力明显改善，各随访时间点RMSE与术前相比，差异均有统计学意义（P值均<0.05）。在反映头影效应的SSSDNNH测试条件下，患者在助听情况下的SRT较裸耳时平均降低6.5 dB，差异具有统计学意义（t=6.25，P=0.001）；在反映双耳总和效应的S0N0和反映静噪效应的S0NSSD测试条件下，SSD患者在裸耳和助听情况下的SRT差异无统计学意义（P值均>0.05）。术后各时间点THI问卷总分及3个维度得分与术前相比，差异均有统计学意义（P值均<0.05）；助听时VAS评分显著低于裸耳时VAS评分，差异有统计学意义（P<0.001）；助听下，SSQ问卷总分、言语理解和空间听觉分类得分均显著提高，差异均有统计学意义（P值均<0.01），NCIQ问卷总分与裸耳相比，差异无统计学意义（P>0.05），仅自信心分项得分较裸耳有显著增加，差异均有统计学意义（Z=-2.497，P=0.013）。 结论： CI植入可在一定程度上帮助汉语普通话SSD患者重建双耳听觉，改善声源定位能力和噪声环境下的言语识别能力，同时有助于减轻耳鸣困扰和耳鸣响度，提高空间听觉的主观感受。.
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