ECAP检出与否的人工耳蜗植入患者的EABR表现

目的比较分析ECAP检出与否的耳蜗植入患者EABR特点，探讨EABR检测的意义。方法对26例人工耳蜗植入患者分别行神经反应遥测neural response telemetry，NRT）检测评估ECAP，并进行电诱发听洼脑干反应（electrically auditory evoked response，EABR）检测，将第20、10、3号电极均引出ECAP波形的14例患者纳入A组，未检出ECAP波形的12例患者纳入B组。对A、B两组患者的EABR阈值、V波潜伏期进行比较分析。结果A、B两组患者20、10、3号电极EABR阈值之间的差异有统计学意义（P〈0．001），V波潜伏期之间的差异无统计学意义（P〉0．05）。结论ECAP波形引出与否人工耳蜗植入患者的EABR阈值有显著差异，v波潜伏期无明显差异。

The EABR for the patients with cochlear implant whether their ECAP can be detected or not

Objective To explore the significance of the EABR（electfically evoked auditory brainstem responses） test by analyzing the differences of thresholds and latencies of cochlear implant users whether they lacked ECAP（electrically evoked compound action potentials） performance or not. Methods EABR and NRT （neural response telemetry） were recorded in electrodes No. 20, 10, 3 in 26 cochlear implant users, who were divided into two groups： Group A and Group B, according to whether their ECAP can be recognized or not. There are 14 patients in the Group A, whose ECAP turned out to be typical, such as type I and type II ; and there are 12 patients in the Group B, whose NRT results were type III. Thresholds of EABR, latencies of wave V were analyzed between Group A and Group B. Results Thresholds of EABR were significant different between Group A and Group B in electrodes No.20,10 and 3 respectively （P〈0.001）,there were no difference between Group A and Group B in their latencies of wave V（P〉0.05 ）. Conclusion The absence of the ECAP would lead to a higher threshold rather than a different latency of wave V.