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摘要: 目的：回顾分析100例Dix-Hallpike试验结果阳性眼震特点特别是伴垂直成分向下的眼震特点。方法：选取100例2017-12-2018-01期间行位置试验检查且Dix-Hallpike试验阳性患者，对Dix-Hallpike试验和滚转试验所诱发的眼震，记录其眼震最大慢相速度（SPV）、潜伏期和持续时间等基本参数，采用SPSS 22.0软件进行统计分析。结果：根据双侧Dix-Hallpike试验悬头位眼震方向和持续时间的不同，100例患者眼震可分为9种类型。以位置性眼震垂直成分分类，双侧或单侧只有垂直向上成分者56例，其中单侧逆（顺）时针伴垂直向上成分52例，双侧逆（顺）时针伴垂直向上成分4例；一侧垂直向上另一侧垂直向下者7例；双侧或单侧仅为垂直向下成分者47例。Dix-Hallpike试验悬头位出现伴垂直向上成分者为63%，出现伴垂直向下成分者为54%。此外，8例患侧出现反转向眼震，100例Dix-Hallpike试验阳性患者中有20例滚转试验呈阳性，5例出现水平眼震，15例出现扭转性伴垂直成分的眼震。结论：Dix-Hallpike试验诱发的眼震有多种类型，伴垂直成分向下的眼震较为常见，应综合分析，并需要进一步研究。Abstract: Objective: To retrospectively analyze the characteristics of 100 cases with Dix-Hallpike test induced nystagmus, especially the vertical downward component.Method: One hundred cases with positive Dix-Hallpike test between December 2017 and January 2018 were included in this study. Dix-Hallpike test and roll test were performed in all patients, and the max slow phase velocity (SPV), latency and duration of positional nystagmus were analyzed with SPSS 22.0 software.Result: According to the difference in the direction and duration of the nystagmus in the head-hanging position on Dix-Hallpike test, 100 patients were classified into 9 types. When only the vertical components were considered, 56 cases presented with bilateral or unilateral vertical upward component, among which 52 cases had unilateral torsional with vertical upward component, 4 cases had bilateral torsional with vertical upward component; 7 cases presented with vertically upward in one side and the vertically downward in the other side; 47 cases presented with bilateral or unilateral vertical downward component. In addition, 8 cases showed the reverse phase nystagmus. Of the 100 patients with positive Dix-hallpike, 20 cases were positive in roll test and 5 cases showing horizontal nystagmus and 15 cases showing torsional and vertical nystagmus.Conclusion: Vertical component in the positional nystagmus was common, and care should be taken to interpret the nystagmus into the underlying disorder.
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Key words:
- videonystagmography /
- downbeat nystagmus /
- positional testing
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