METHODS: In a retrospective case control study, adult patients with MD who received CI from 2002 till 2021 were compared to a matched control group of CI patients without MD. Patients with prior ITC/ITG were extracted from MD group. Pre-operative audiological results were measured and trends across post-operative monosyllabic word recognition score at 65 decibels (WRS65CI) at switch-on, 3-6 months, 1 year and last yearly value were analyzed across all groups.
RESULTS: 28 MD ears were compared with 33 control ears. From MD ears 9 had received ITG and 6 ITC prior to CI. WRS65CI increased significantly with time within MD and control groups, but no difference in WRS65CI was found between these 2 groups. ITG ears showed fluctuating WRS65CI after CI with no change across time, while ITC ears showed significant increase in trend of WRS65CI values across time.
CONCLUSIONS: MD and non-MD patients showed comparable hearing results after CI. Prior ITC might positively influence hearing preservation after CI in MD patients whereas ITG group showed fluctuating hearing.
方法:在一项回顾性病例对照研究中,从2002年到2021年接受CI的成年MD患者与无MD的CI患者的匹配对照组进行比较.从MD组中提取具有先前ITC/ITG的患者。测量了术前听力学结果,并在打开时65分贝(WRS65CI)的术后单音节单词识别得分的趋势,3-6个月,对所有组的1年和最后一年的值进行分析。
结果:将28只MD耳朵与33只对照耳朵进行了比较。来自MD的耳朵9在toCI之前接受了ITG和6ITC。WRS65CI在MD组和对照组随时间显著增加,但两组间WRS65CI无差异。ITG耳朵显示WRS65CI后波动,随时间无变化,而ITC耳部WRS65CI值随时间呈显著上升趋势。
结论:MD和非MD患者在CI后表现出相当的听力结果。在MD患者中,先前的ITC可能会对CI后的听力保护产生积极影响,而ITG组表现出听力波动。