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本文分析了16名患侧纯音测听正常(500～4000Hz损失不过25dB)经手术证实为颅后窝肿瘤患者的ABR的结果。研究表明:(1)虽然颅后窝病变的患者自觉有听力困难或耳鸣,但与其纯音测听结果不符合,这说明患者的听力自我评价比纯音测听更值得注意。(2)累及听神经的病变体积大,但纯音听力可不受影响。(3)年青人的听力系统对Ⅷ神经及低位
This article analyzes the results of an ABR of 16 patients with posterior fossa tumors confirmed by surgically validating the hearing of 16 ipsilateral patients (500-4000 Hz, but not more than 25 dB). The study shows that: (1) Although patients with cranial fossa lesions have conscientious hearing difficulties or tinnitus, they do not conform to their pure tone audiometry results, which indicates that patients’ hearing self-evaluation is more worthy of attention than pure tone audiometry. (2) involving the lesion volume of the auditory nerve, but pure tone hearing can be unaffected. (3) young people’s hearing system on the Ⅷ nerve and low