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首页> 外文期刊>The Laryngoscope: A Medical Journal for Clinical and Research Contributions in Otolaryngology, Head and Neck Medicine and Surgery, Facial Plastic and Reconstructive Surgery .. >Monitoring of cochlear function during cochlear implantation.
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Monitoring of cochlear function during cochlear implantation.

机译：人工耳蜗植入过程中的人工耳蜗功能监测。

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OBJECTIVE: To report the feasibility of monitoring cochlear function during cochlear implantation. STUDY DESIGN: Case report. SETTING: Tertiary care referral center. METHODS: A child with audiologic features typical of bilateral auditory neuropathy underwent cochlear implantation. The scala tympani was entered inferior and slightly anterior to the round window membrane margin and smooth electrode insertion was achieved. Using single polarity click stimuli, the cochlear microphonic was measured at several steps during surgery. RESULTS: Cochlear microphonics were present at all stages during the implantation process and were clearly distinguished from neural responses by stimulus polarity inversion and constant latencies, despite changes in stimulus level. With the electrode in situ, amplitudes were smaller but persisted until the final measurement at 10 minutes after insertion. At follow-up 2 weeks after surgery, behavioral audiometry results indicated profound hearing loss in the operated ear. CONCLUSIONS: This paper demonstrates the feasibility of monitoring cochlear function during cochlear implantation. The routine surgical approach did not appear to adversely affect the functional measurements. Standard size, full electrode insertion did diminish the amplitude of the cochlear microphonics, possibly as a result of intracochlear mechanical impairment. Ultimately, profound hearing loss was documented, indicating that factors other than immediate changes induced by electrode insertion were likely responsible for the loss of cochlear function.
机译：目的：报道在人工耳蜗植入过程中监测人工耳蜗功能的可行性。研究设计：病例报告。地点：三级医疗转诊中心。方法：一名具有双侧听觉神经病典型听力特征的儿童接受了人工耳蜗植入。颞下颌sc入到圆形窗膜边缘的稍下方，并能顺利插入电极。使用单极性点击刺激，在手术过程中的多个步骤测量耳蜗微音。结果：在植入过程的所有阶段都存在耳蜗微音，尽管刺激水平发生了变化，但通过刺激极性反转和恒定潜伏期与神经反应明显不同。在电极原位的情况下，振幅较小，但一直持续到插入后10分钟进行最终测量。手术后2周的随访中，行为测听结果表明手术后的耳朵严重失聪。结论：本文证明了在人工耳蜗植入过程中监测人工耳蜗功能的可行性。常规手术方法似乎并未对功能测量产生不利影响。标准尺寸，完整的电极插入确实会减小耳蜗微音的振幅，这可能是由于耳蜗内机械损伤引起的。最终，记录到严重的听力损失，这表明除因电极插入引起的立即变化外，其他因素也可能是耳蜗功能丧失的原因。

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