目的:评估单侧后管良性阵发性位置性眩晕(BPPV)成功进行耳石复位手术(CRP)后残留头晕患者的耳石功能,并调查可能的危险因素。
方法:本病例对照观察性研究包括健康对照和BPPVCRP改善后残留头晕的患者。所有参与者都接受了完整的历史记录,耳镜检查,听力学基础评价,Dix-Hallpike测试以搜索后管BPPV,残留头晕筛查,前庭诱发肌源性电位(VEMP)测试。评估了组间差异,并通过单变量分析确定了与残留头晕相关的可能因素。
结果:共有50例残留头晕患者(平均年龄,56.53±7.46岁[29名女性:21名男性])和50名健康对照(平均年龄,包括58.13±7.57岁[20名女性:30名男性])。在患者组和对照组之间发现VEMP潜伏期的显着差异(在患者组中延迟),两耳振幅无明显组间差异。衰老,女性性别,BPPV持续时间长,CRP数量,颈部VEMP和眼部VEMP异常,冬季发病,与残余头晕的风险显著相关。
结论:残余头晕是BPPV的常见后遗症,可能与耳石功能障碍有关。VEMP变化以延迟延迟的形式显示。
OBJECTIVE: To evaluate otolithic functions in patients with residual dizziness after successful canalith repositioning procedures (CRPs) for unilateral posterior canal benign paroxysmal positional vertigo (BPPV), and to investigate possible risk factors.
METHODS: This case-control observational study included healthy controls and patients with residual dizziness after improvement following CRP for BPPV. All participants were subjected to full history taking, otoscopy, audiological basic evaluation, Dix-Hallpike test to search for posterior canal BPPV, residual dizziness screening, and vestibular evoked myogenic potential (VEMP) testing. Between-group differences were assessed and possible factors associated with residual dizziness were identified by univariate analysis.
RESULTS: A total of 50 patients with residual dizziness (mean age, 56.53 ± 7.46 years [29 female: 21 male]) and 50 healthy controls (mean age, 58.13 ± 7.57 years [20 female: 30 male]) were included. A significant difference in VEMP latencies was found between the patient and control group (delayed in the patient group), with no significant between-group difference in amplitude in both ears. Aging, female sex, long duration of BPPV, number of CRPs, cervical VEMP and ocular VEMP abnormalities, and winter onset, were significantly associated with the risk of residual dizziness.
CONCLUSIONS: Residual dizziness is a frequent sequel of BPPV that may relate to otolithic dysfunction. VEMP changes were revealed in the form of delayed latencies.