Kartush J M, Linstrom C J, Graham M D, Kulick K C, Bouchard K R
Michigan Ear Institute, Farmington Hills 48331.
Laryngoscope. 1990 Jan;100(1):5-9. doi: 10.1288/00005537-199001000-00002.
Transtympanic electric promontory stimulation is a psychoacoustic test used to assess residual acoustic neurons in profound sensorineural hearing loss. The test was performed in six patients who had previously undergone transmastoid (N = 5) or transcanal-oval window (N = 1) labyrinthectomy as a means of determining the feasibility of future cochlear implantation. Four patients had unilateral Meniere's disease, one had labyrinthitis, and one had delayed onset vertigo. All patients perceived a definite auditory sensation in the labyrinthectomized ear during stimulation. The results of threshold, dynamic range, and difference limen testing were similar to those obtained during preoperative stimulation of cochlear implant candidates (N = 12) who subsequently became successful users. There was no evidence of response degradations as the time following labyrinthectomy increased. The results of this study suggest the possibility of successful cochlear implantation following labyrinthectomy. Supporting histologic data are reviewed.
经鼓室电刺激岬是一种心理声学测试，用于评估重度感音神经性听力损失患者残留的听觉神经元。该测试在6例患者中进行，这些患者之前接受过经乳突（N = 5）或经耳道-卵圆窗（N = 1）迷路切除术，以此来确定未来进行人工耳蜗植入的可行性。4例患者患有单侧梅尼埃病，1例患有迷路炎，1例患有迟发性眩晕。所有患者在刺激过程中均在迷路切除侧耳感受到明确的听觉。阈值、动态范围和差别阈测试结果与随后成功使用人工耳蜗的人工耳蜗植入候选者（N = 12）术前刺激时获得的结果相似。没有证据表明随着迷路切除术后时间的增加反应会退化。本研究结果提示迷路切除术后成功植入人工耳蜗的可能性。文中还回顾了支持性的组织学数据。
