Objective:To study the potential role of subjective visual vertical(SVV)as a prognostic marker for canalith repositioning maneuver(CRM)in patients with posterior canal benign paroxysmal positional vertigo(PC-BPPV)for ...Objective:To study the potential role of subjective visual vertical(SVV)as a prognostic marker for canalith repositioning maneuver(CRM)in patients with posterior canal benign paroxysmal positional vertigo(PC-BPPV)for the Indian population.Methods:SVV was examined in 30 patients with PC-BPPV before and after canalith repositioning maneuver and after complete resolution of PC-BPPV.Study parameters included the mean of 10 angular tilt readings and direction of deviation,which were compared before and after CRM and following complete resolution of PC-BPPV.Results:The angle of SVV tilt was greater and deviated towards the affected ear before CRM in all patients,which decreased significantly shortly after CRM and continued to decrease after complete resolution of PC-BPPV(p<0.0001).Conclusions:SVV can be used to test utricular dysfunction in PC-BPPV.The angle of tilt improves in response to CRM,which may be used as a prognostic marker in patients with PC-BPPV receiving CRM.展开更多
目的本文旨在通过可视化分析,深入探讨血管性头晕/眩晕的研究热点及其发展趋势。方法在Web of Science核心数据库检索2008年1月-2023年3月有关血管性头晕/眩晕的文章,使用CiteSpace 6.2.R2对文献进行可视化分析。结果共有1298篇文章,200...目的本文旨在通过可视化分析,深入探讨血管性头晕/眩晕的研究热点及其发展趋势。方法在Web of Science核心数据库检索2008年1月-2023年3月有关血管性头晕/眩晕的文章,使用CiteSpace 6.2.R2对文献进行可视化分析。结果共有1298篇文章,2008年1月-2023年3月发文量呈增长趋势,共有83个国家/地区、424个机构发表了相关文献,美国发文量(331篇)和中介中心性(0.25)均位居第一,Johns Hopkins University(约翰霍普金斯大学)是发文量最多的机构,发文56篇,Newman-toker,David是发文量最多的作者。最常出现的关键词是“ischemic stroke”(缺血性卒中),根据关键词聚类显示,该领域研究侧重于从危险因素、床旁检查方面早期诊断血管性头晕/眩晕以及有关小脑前下动脉供血区域梗死的研究,近年来研究人员越来越关注该领域的个案报道、视频眼震电图、病理生理机制等方面。结论目前国际上对血管性头晕/眩晕的研究在增加,在急诊室通过危险因素和床旁检查方面对血管性头晕/眩晕进行早期诊断是领域研究热点,在以后的研究中,研究人员应重点关注这些主题方向。展开更多
文摘Objective:To study the potential role of subjective visual vertical(SVV)as a prognostic marker for canalith repositioning maneuver(CRM)in patients with posterior canal benign paroxysmal positional vertigo(PC-BPPV)for the Indian population.Methods:SVV was examined in 30 patients with PC-BPPV before and after canalith repositioning maneuver and after complete resolution of PC-BPPV.Study parameters included the mean of 10 angular tilt readings and direction of deviation,which were compared before and after CRM and following complete resolution of PC-BPPV.Results:The angle of SVV tilt was greater and deviated towards the affected ear before CRM in all patients,which decreased significantly shortly after CRM and continued to decrease after complete resolution of PC-BPPV(p<0.0001).Conclusions:SVV can be used to test utricular dysfunction in PC-BPPV.The angle of tilt improves in response to CRM,which may be used as a prognostic marker in patients with PC-BPPV receiving CRM.
