Todt Ingo, Basta Dietmar, Seidl Rainer, Ernst Arne
Department of Otolaryngology at UKB, Hospital of the University of Berlin, Charité Medical School, Berlin, Germany.
Acta Otolaryngol. 2008;128(12):1314-21. doi: 10.1080/00016480801935533.
The surgical technique of electrode pull-back had a significant improving effect on the spread of excitation (SOE). However, the long-term clinical and audiological outcome of this modified surgical technique should be a subject of further studies.
To observe the intraoperative electrophysiological effects of a surgical electrode insertion technique (i.e. pull-back) in cochlear implantation.
The influence of the pull-back technique on intraoperatively recorded electrophysiological parameters (including T-NRT, ECAP amplitude, SOE) was investigated in a prospective, non-randomized, intraoperative study. In addition, we observed the correlation of insertion depth and SOE differences after a controlled electrode pull-back. We implanted 13 patients (aged 18-76 years) with a Nucleus 24CI RE cochlear implant with a perimodiolar electrode.
After a controlled pull-back, a significant decrease of the SOE at different electrodes (upon recording from electrodes 5, 10, 15) was observed. Electrode 10 was the SOE area with the most significant and homogeneous changes after pull-back. The change in the ECAP amplitudes was highly variable in correlation with the changes in the SOE.
电极回拉手术技术对兴奋扩散（SOE）有显著改善作用。然而，这种改良手术技术的长期临床和听力学结果仍有待进一步研究。
观察人工耳蜗植入术中一种手术电极插入技术（即回拉）的术中电生理效应。
在一项前瞻性、非随机的术中研究中，研究回拉技术对术中记录的电生理参数（包括T-NRT、ECAP振幅、SOE）的影响。此外，在控制电极回拉后，我们观察了插入深度与SOE差异之间的相关性。我们为13例年龄在18至76岁之间的患者植入了带有环螺旋电极的Nucleus 24CI RE人工耳蜗。
在控制回拉后，观察到不同电极（从电极5、10、15记录时）的SOE显著降低。电极10是回拉后SOE区域变化最显著且最均匀的区域。ECAP振幅的变化与SOE的变化高度相关且变化很大。
