摘要
目的 分析突发性听力减退为首发症状的听神经瘤的临床特点 ,以避免对该病的误诊、误治。方法 对 1983~ 1997年收治听神经瘤 92例中 2 0例 (2 1耳 )首发症状为突发性听力减退的病例(占 2 1.7% )进行回顾性分析。结果 听力学检测 :纯音听阈 (5 0 0Hz、10 0 0Hz、2 0 0 0Hz听力平均听阈 ) >71dBHL者 12耳 ,占 5 7.1% ;听性脑干反应 (auditorybrainstemresponse ,ABR)检测均有异常 ;声反射检测 9例 (10耳 )均消失。影像学检查CT阳性率为 88.89% ,阴性者行CT气脑造影或磁共振成像 (magneticresonanceimaging ,MRI)检查均能确诊。结论 对突发性听力减退可疑听神经瘤的患者应常规检查ABR ,出现异常者应进行颞骨CT 。
Objective To avoid misdiagnosis and misapplied therapy of acoustic neuroma. Methods 92 cases of acoustic neuroma treated between 1983 and 1997 were retrospectively reviewed. Among them, 20 patients (21 ears, 21.7%) presented with sudden hearing loss as the starting symptoms. The diagnosis was based on audiological and radiologic examinations. Results The clinical and audiological analysis demonstrated that 57.1% of the ears showed hearing loss over 71 dBHL, and all ears had deteriorated ABRs. Acoustic reflex was nonreactive in all 10 ears tested. Positive findings in CT scan were 88.89%. CT pneumoencephalography or MRI provided useful information of diagnosis in those with negative findings of plane CT scan. Conclusion ABR should be used as a routine test for patients with sudden deafness. When ABR was abnormal, CT scan around the internal auditory meatus was needed.
出处
《中华耳鼻咽喉科杂志》
CSCD
北大核心
2001年第1期31-33,共3页
Chinese Journal of Otorhinolaryngology
关键词
听神经瘤
感音神经性听觉丧失
听觉脑干发电位
误诊
首发症状
Neuroma, acoustic
Hearing loss,sensorineural
Evoked potentials,anditory, brain stem
Diagnostis errors