Characteristics of nystagmus and its therapeutic effect in the reduction of posterior semicircular canal benign paroxysmal positional vertigo
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摘要: 目的 通过观察后半规管良性阵发性位置性眩晕(PC-BPPV)患者行Epley复位过程中不同位置出现的眼震形式，比较其首次复位效果，进一步总结分析可能引起复位失败的原因及不同眼震形式对患者预后的判断。方法 回顾性分析191例PC-BPPV患者的临床资料，其中95例复位过程中仅出现正向眼震者设为A组，69例复位过程中均未出现眼震者设为B组，27例复位过程中出现反向眼震者设为C组。通过G-Force眩晕诊疗仪确诊并模拟Epley法复位，比较复位过程中眼震形式及首次复位效果。结果 A组首次复位效果优于C组(P < 0.05)；B组复位效果优于C组(P < 0.05)；A组与B组复位效果差异无统计学意义(P>0.05)。结论 PC-BPPV复位过程出现的眼震形式对首次复位效果的评估及成功复位有一定的指导意义。PC-BPPV复位过程出现反向眼震，预示复位效果较差。Abstract: Objective By observing the nystagmus forms at different positions during Epley reduction in patients with posterior semicircular canal benign parochial positional vertigo(PC-BPPV), to compare the effects of the first reduction, and to further summarize the possible causes of reduction failure and the prognosis of patients with different nystagmus forms.Methods A retrospective analysis of 191 PC-BPPV patients diagnosed with PC-BPPV showed that 95 cases had positive nystagmus during the reduction process(group A), 69 cases had no nystagmus (group B), and 27 cases had reverse nystagmus (group C). All the patients were diagnosed by G-Force BPPV and were treated through simulative Epley CRP. The form of nystagmus and the effect of the first reduction were compared.Results The first reduction effect of group A was better than that of group C(P < 0.05). The reduction effect of group B was better than that of group C(P < 0.05). There was no significant difference in the reduction effect between group A and group B(P>0.05).Conclusion The form of nystagmus in the reduction process of PC-BPPV has a certain guiding significance for the evaluation of the first reduction effect and the successful reduction. The reverse nystagmus during the reduction process indicates a poor reduction effect.
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Key words:
- vertigo /
- posterior semicircular canal /
- nystagmus
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