取出探针前后，轮廓核人工耳蜗的神经反应阈值。
Neural response thresholds in the Nucleus Contour cochlear implant before and after stylet removal.
作者信息
Tsuji Robinson Koji, Goffi-Gomez Maria Valéria Schmidt, Peralta Cristina Ornelas, Guedes Mariana Cardoso, Magalhães Ana Tereza, Neto Rubens Brito, Bento Ricardo Ferreira
机构信息
ENT Department, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, rua Capote Valente 432, São Paulo, Brazil.
出版信息
Acta Otolaryngol. 2009 Nov;129(11):1330-6. doi: 10.3109/00016480802629457.
CONCLUSION
The study shows that there are differences in the measurement of the action potentials with and without the stylet in the Nucleus Freedom Contour Advance that are higher in the apex than in the base of the cochlea.
OBJECTIVES
To determine if there are differences in the intraoperative impedances and in the neural response telemetry threshold values in the Nucleus Freedom Contour Advance before and after stylet removal.
SUBJECTS AND METHODS
This was a prospective clinical study. Intraoperative impedances and neural response telemetry in users of the Freedom Contour Advance Cochlear Implant were measured before and after stylet removal.
RESULTS
There was a significant reduction in the impedance values of an average 1.5 kOmega+/-2.3 in common ground mode and 1.3 kOmega+/-2.3 for all monopolar modes after the stylet removal (p < 0.001). When analyzing the apical, medium, and basal electrodes, there was a statistically significant reduction in the neural response thresholds after stylet removal only in the apical electrodes (p = 0.001).
结论
研究表明，在Nucleus Freedom Contour Advance中，有电极芯和无电极芯时动作电位的测量存在差异，在耳蜗顶部的差异比底部更高。
目的
确定在取出电极芯前后，Nucleus Freedom Contour Advance的术中阻抗和神经反应遥测阈值是否存在差异。
受试者和方法
这是一项前瞻性临床研究。在取出电极芯前后，对Freedom Contour Advance人工耳蜗使用者进行术中阻抗和神经反应遥测测量。
结果
取出电极芯后，共地模式下平均阻抗值显著降低1.5 kΩ±2.3，所有单极模式下降低1.3 kΩ±2.3（p < 0.001）。在分析顶部、中部和底部电极时，仅顶部电极在取出电极芯后神经反应阈值有统计学显著降低（p = 0.001）。
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