Zhang D, Fan Z, Han Y, Yu G, Wang H
*Otolaryngology-Head and Neck Surgery, Provincial Hospital, affiliated to Shandong University, People's Republic of China.
J Laryngol Otol. 2010 May;124(5):477-81. doi: 10.1017/S0022215109992337. Epub 2009 Dec 11.
To report eight cases of inferior vestibular neuritis, in order to raise awareness of this new subtype of vestibular neuritis.
We retrospectively analysed 216 patients (104 males and 112 females; age range 10-64 years; mean age 38.4 years) with full clinical documentation who had attended our hospital's vertigo clinic between May 2007 and December 2008. All patients underwent systematic investigation, including hearing tests, radiology, caloric testing and vestibular evoked myogenic potential testing.
Of 216 patients with vestibular neuritis, eight cases were diagnosed as inferior vestibular neuritis, based on comprehensive analysis of test data. The clinical features of these eight patients were consistent with the characteristics of vestibular neuritis. The results of pure tone audiometry and caloric testing were normal, and the possibility of central lesions was excluded by cerebral computed tomography or magnetic resonance imaging on admission. Six cases had unilateral loss of vestibular evoked myogenic potentials, whereas two had a unilateral lower amplitude of vestibular evoked myogenic potentials.
Inferior vestibular neuritis is a novel subtype of vestibular neuritis, which involves the inferior vestibular nerve alone. Vestibular evoked myogenic potential testing is a useful aid to the diagnosis of inferior vestibular neuritis.
报告8例下前庭神经炎病例，以提高对这种前庭神经炎新亚型的认识。
我们回顾性分析了2007年5月至2008年12月间在我院眩晕门诊就诊的216例患者（男104例，女112例；年龄范围10 - 64岁，平均年龄38.4岁），所有患者均有完整的临床资料。所有患者均接受了系统检查，包括听力测试、影像学检查、冷热试验及前庭诱发肌源性电位测试。
在216例前庭神经炎患者中，经对检查数据综合分析，有8例被诊断为下前庭神经炎。这8例患者的临床特征与前庭神经炎相符。纯音听力测定和冷热试验结果正常，入院时头颅计算机断层扫描或磁共振成像排除了中枢病变的可能。6例患者前庭诱发肌源性电位单侧消失，2例患者前庭诱发肌源性电位单侧波幅降低。
下前庭神经炎是前庭神经炎的一种新亚型，仅累及下前庭神经。前庭诱发肌源性电位测试有助于下前庭神经炎的诊断。
