耳外伤患者的脑干听觉诱发电位分析

目的：分析耳外伤患者脑干听觉诱发电位（BAEP）的表现。方法：对108例耳外伤患者进行BAEP检测，测定Ⅰ、Ⅲ、Ⅴ各波潜伏期（PL）、峰间潜伏期（IPL）、两耳间PL或IPL之侧间差（ILD）等指标。结果：108例（141耳）中异常91耳，异常率为64．5％。主要异常表现为病例组Ⅰ、Ⅲ、Ⅴ波PL明显延长，与对照组相比，差异有非常显著意义（P〈0．01），IPL则无明显改变（P〉0．05），Ⅴ波反应阈升高。结论：BAEP检测是一项客观敏感的神经电生理学检查法，对于评价耳外伤后的听觉传导通路功能状况具有重要价值。

Analysis of brainstem auditory evoked potential in patients with ear-trauma

Objective：To analyze the changes and characteristics of brainstem auditory evoked potential（BAEP）in patients with ear-trauma. Methods： BAEPs were determined in 108 patients with eartrauma,and the peak latency（PL ）of Waves Ⅰ-Ⅲ-Ⅴ ,and the interpeak lateney（IPL ）of Waves Ⅰ-Ⅲ- ,Ⅲ-Ⅴ ,Ⅰ-Ⅴ were determined ,and inter lateral latency differenee（IL D）of the PL and IPL were compared. Results： BAEPS were abnormal in 91 ears. The abnormality rate was 65 %,mainly showng the PL of WavesⅠ-Ⅲ,Ⅲ-Ⅴ Ⅰ-Ⅴand of the patient group was prolonged apparently,and a signicant difference was noted as compared with the control group（P〈0.01）,but no oious changes was observed in IPL,and the increase of reactive threshold was noted. Conclusion： BAEP might serve as an objective and sensitive eletroneurophysiological indicator and might be of important value to evaluate the function state of auditory pathway after ear-trauma.