震动眼震试验在眩晕诊断中的应用

目的:观测震动眼震(VIN)在眩晕诊断中的临床意义。方法:健康志愿者30例作为对照组,单侧前庭周围性疾病眩晕缓解期患者67例为实验组,分别进行震动试验(VT)和摇头试验(HST),观察眼震诱发情况。眩晕患者同时还进行冷热试验(CT)。结果:实验组VT中52例(77.6%)出现VIN,主要是水平眼震,其中44例VIN方向朝向健侧,梅尼埃病和前庭神经元炎患者分别有2例、6例VIN方向朝向患侧;引出摇头眼震(HSN)46例(68.7%),CT存在一侧半规管反应减退(UW)54例(80.6%)。对照组均无VIN和HSN。结论:VIN试验具有较高的敏感性,能够为评定前庭损伤侧别提供有益信息,安全性强、患者无痛苦、简便、易于推广,适合各级眩晕门诊的快速筛查。

Clinical Application of Vibration-induced Nystagmus in the Diagnosis of Vertigo

Objective: To clarify the clinical significance of vibration-induced nystagmus(VIN)in the diagnosis and differential diagnosis of vertigo. Methods: Sixty-seven patients with unilateral peripheral vestibular disorders in relieving stage and 30 healthy volunteers as contrast underwent vibration test(VT)and head shaking test(HST). And those with vertigo underwent caloric test(CT). Results: Of the 67 patients,52(77.6%)showed VIN which were mainly horizontal. The direction of VIN in 44 patients was toward the healthy side,whereas in 2 patients with Meniere's disease and 6 patients with vestibular neuronitis,it was toward the affected side. The sensitivity of VIN was 77.6%. Head shaking nystagmus(HSN)was evoked in 46(68.7%)patients and 54(80.6%)patients showed unilateral weakness(UW)with caloric test(CT). None of 30 healthy subjects showed VIN and HSN. Conclusion: With higher sensitivity,VIN test is a simple,safe and well-tolerated clinical test. It can be applied for filtrating of patients with vertigo in the out-patient.