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目的探讨三叉神经痛患者脑干听觉诱发电位（ＢＡＥＰ）检测的意义。方法利用神经电诊仪对２８例患者进行ＢＡＥＰ检测。结果２４例原发性三叉神经痛患者中ＢＡＥＰ异常者１９例（７９％），表现多为同侧或双侧Ⅰ波、Ⅲ波分化差，潜伏期延长。４例胆脂瘤所致的继发性三叉神经痛患者ＢＡＥＰ全部异常，表现为Ⅲ波、Ⅴ波分化差或波形缺失。结论ＢＡＥＰ是三叉神经痛辅助诊断的一个敏感指标，尤其对鉴别原发性和继发性三叉神经痛具有重要意义，从而对决定手术方式具有指导作用。
Objective To investigate the significance of brainstem auditory evoked potential (BAEP) in patients with trigeminal neuralgia. Methods Twenty-eight patients underwent BAEP with NEPT. Results Twenty-nine patients (79%) with abnormal BAEP in 24 patients with primary trigeminal neuralgia showed mostly ipsilateral or bilateral Ⅰ-wave and Ⅲ-wave differentiation with prolonged latency. In 4 patients with secondary trigeminal neuralgia caused by cholesteatoma, all patients with BAEP were abnormal, showing Ⅲ wave and Ⅴ wave differentiation or waveform loss. Conclusions BAEP is a sensitive index for the auxiliary diagnosis of trigeminal neuralgia, especially for the differential diagnosis of primary and secondary trigeminal neuralgia, and thus plays a guiding role in determining the surgical approach.