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首页> 外文期刊>The American journal of otology >Successful revision of failed cochlear implants in severe labyrinthitis ossificans.
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Successful revision of failed cochlear implants in severe labyrinthitis ossificans.

机译：在严重的骨化性迷路炎中成功修复失败的人工耳蜗。

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摘要

Labyrinthitis ossificans may complicate the insertion of a multichannel cochlear implant in patients deafened after meningitis. Two children who initially underwent partial insertion of a 22-channel cochlear implant because of severe cochlear ossification required revision surgery after several months of unsuccessful device use. At the time of revision, resection of the car canal, tympanic membrane, malleus, and incus provided access to the lateral wall of the cochlea, permitting extensive drilling of the basal turn and a circumodiolar placement of the electrode. Functional integrity of the electronic components of the original device was documented intraoperatively, avoiding the expense of a new receiver-stimulator. Complete insertion of the active electrodes was accomplished in both cases, and electrophysiologic responsiveness to the implant was documented using intraoperative electrically evoked auditory brainstem response recordings. Postoperative performance has been similar to that of cochlear implant patients with nonossified ears. Experience with these two cases suggests that efforts to optimize electrode insertion at the original surgical procedure are appropriate and may help to avoid the disappointment of an unsuccessful cochlear implant.
机译：骨化性迷路炎可能会使脑膜炎后耳聋的患者多通道人工耳蜗的插入复杂化。由于严重的耳蜗骨化，最初对22通道的人工耳蜗进行部分插入的两个孩子，在使用几个月后未成功使用器械时，需要进行翻修手术。在翻修时，切除小管，鼓膜，槌骨和in骨可进入耳蜗的侧壁，从而可广泛钻出基底转弯并在电极上进行包绕。术中记录了原始设备电子组件的功能完整性，从而避免了购买新的接收器刺激器的费用。在两种情况下均完成了有源电极的完全插入，并使用术中电诱发的听觉脑干反应记录来记录对植入物的电生理反应。术后表现与未骨化耳朵的人工耳蜗患者相似。这两种情况的经验表明，在原始手术过程中优化电极插入的努力是适当的，并且可以帮助避免失败的人工耳蜗的失望。

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