Analysis of reduction effect of the evoked nystagmus in the non-affect side during Dix-Hallpike or Roll-test in unilateral posterior semicircular canal benign paroxysmal positional vertigo
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摘要: 目的 比较健侧Dix-Hallpike(D-H)及Roll-test诱发眼震的单侧后半规管良性阵发性位置性眩晕(PC-BPPV)与未出现上述眼震的单侧PC-BPPV的复位疗效并分析其原因。方法 回顾性分析诊断为单侧PC-BPPV患者210例, 其中18例仅于健侧D-H诱发眼震(A组), 30例仅于Roll-test诱发眼震(B组), 26例于健侧D-H及Roll-test均诱发眼震(C组), 136例无出现上述眼震(D组)。以上患者均通过G-Force BPPV诊疗仪确诊并模拟Epley或者Semont方法复位, 比较其复位效果。结果 首次复位, D组复位效果优于A组和C组(P < 0.05);D组与B组比较, 复位效果差异无统计学意义(P>0.05);A组与C组复位效果差异无统计学意义(P>0.05)。A、B、C、D组患者予以复位治疗达到眼震消失或最终眼震减轻(再次复位眼震无改善)所需要的平均复位次数分别为(1.44±0.63)次、(1.46±0.65)次、(1.52±0.87)次、(1.48±0.73)次, 4组间两两比较差异均无统计学意义(P>0.05)。而对于多次复位的效果, 组间的差异与首次复位结果相同。结论 单侧PC-BPPV行位置试验时, 若健侧D-H诱发眼震, 首次复位效果欠佳。若仅Roll-test诱发眼震, 并不影响其首次复位效果。4种情况的PC-BPPV复位次数无明显差异, 但健侧D-H诱发眼震的单侧PC-BPPV患者多次复位后效果仍欠佳。Abstract: Objective Comparative analysis of the reduction effect of the evoked nystagmus in the non-affect side during Dix-Hallpike(D-H) or Roll-test in unilateral posterior semicircular canal benign paroxysmal positional vertigo(PC-BPPV) and PC-BPPV without above evoked nystagmus.Method Retrospective analysis of 210 patients diagnosed with unilateral PC-BPPV by G-Force BPPV CRP system was made. Among them, 18 patients exhibited positive nystagmus only when the non-affected side was stimulated by D-H test(Group A), 30 was evoked only when stimulated by Roll-test(Group B), 26 was evoked when stimulated by both Roll-test and the non-affected side D-H test(Group C), 136 without nystagmus in the above positions(Group D). All the patients were diagnosed by G-Force BPPV and were treated through simulative Epley or Semont CRP. Compare the reduction effect among the groups.Result At the first time, the reduction effect of nystagmus in Group D was superior to those in Group A and Group C(P < 0.05). There was no difference between Group D and Group B(P>0.05). The difference between Group A and Group C was also non-significant(P>0.05). The average CRP times of the four groups(CRP until nystagmus disappeared or no longer alleviated) were 1.44±0.63(Group A), 1.46±0.65(Group B), 1.52±0.87(Group C) and 1.48±0.73(Group D)respectively. There were no statistic difference between four groups(P>0.05). The differences of final reduction effect between groups were the same as those at the first time.Conclusion The first time reduction effect was less effective when nystagmus evoked the non-affect side during D-H test in unilateral PC-BPPV, while it might be irrelevant to the nystagmus evoked only in Roll-test. Although the times of CRP were similar among the groups, the final reduction effect of groups with nystagmus evoked the non-affect side during D-H was poorer.
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Key words:
- vertigo /
- posterior semicircular canal /
- nystagmus /
- canalith repositioning
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表 1 A组与B组首次复位及多次复位效果比较
项目 A组 B组 Z P 首次复位秩平均值 19.32 25.95 -1.782 0.075 多次复位秩平均值 19.32 25.95 -1.878 0.060 秩和检验:无效赋值为1,改善赋值为2,治愈赋值为3 表 2 A组与C组首次复位及多次复位效果比较
项目 A组 C组 Z P 首次复位秩平均值 21.76 20.46 -0.389 0.697 多次复位秩平均值 22.82 19.71 -0.927 0.354 表 3 A组与D组首次复位及多次复位效果比较
项目 A组 D组 Z P 首次复位秩平均值 48.18 76.30 -3.014 0.003 多次复位秩平均值 50.65 75.97 -3.000 0.003 表 4 B组与C组首次复位及多次复位效果比较
项目 B组 C组 Z P 首次复位秩平均值 31.36 21.73 -2.498 0.012 多次复位秩平均值 32.02 20.94 -2.910 0.004 表 5 B组与D组首次复位及多次复位效果比较
项目 B组 D组 Z P 首次复位秩平均值 72.62 80.45 -0.987 0.323 多次复位秩平均值 75.86 79.71 -0.552 0.581 表 6 C组与D组首次复位及多次复位效果比较
项目 C组 D组 Z P 首次复位秩平均值 46.58 82.11 -4.163 0.000 多次复位秩平均值 45.71 82.27 -4.624 0.000 -
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