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Current Medical Science 2020年第3期40卷 455-462页

作者： Su-lin ZHANG E TIAN Wen-chao XU Yu-ting ZHU Wei-jia KONG Department of Otorhinolaryngology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Institute of Otorhinolaryngology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Key Laboratory of Neurological Disorders of Education Ministry Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China

Benign paroxysmal positional vertigo(BPPV)represents the most common form of positional *** is caused by dislodged otoconia that freely float in the semicircular canals(canalolithiasis)or attach to the cupula(cupulolithiasis).A cupulolithiasis-type(or a heavy cupula-type)of BPPV implicating the lateral semicircular canal(LSCC)exhibits persistent ageotropic direction-changing positional nystagmus(DCPN)in a head-roll ***,in some cases,unlike any type of BPPV,persistent geotropic DCPN cannot be explained by any mechanisms of BPPV,and don’t fit the current ***,the notion of light cupula has been introduced to refer to the persistent geotropic *** this study,we looked at the clinical features of light cuplula and discussed the possible mechanisms and therapeutic strategies of the *** notion of light cupula is a helpful addition to the theory of peripheral positional vertigo and nystagmus.

关键词： positional vertigo direction-changing positional nystagmus light cupula head-roll test null plane lateral semicircular canal ampulla

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Analysis of persistent geotropic and apogeotropic positional nystagmus of the lateral canal benign paroxysmal positional vertigo

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Journal of Otology 2022年第2期17卷 90-94页

作者： Sertac Yetiser Dilay Ince Anadolu Medical Center Dept of ORL&HNSKocaeli41400Turkey

Objective:This study aims to analyze the clinical characteristics of persistent geotropic and apogeotropic positional nystagmus of LC-BPPV in view of light and heavy cupula *** and method:The study group includes 184 patients with LC BPPV(98 apogeotropic,86 geotropic type)who have been examined between 2009 and ***-nine females and 85 males,aged between 16 and 92 years were included(Ageotropic 49.32±14.12,geotropic 44.49±13.90 years).Average slow phase velocity(SPV)of positional nystagmus was documented and those with persistent directionchanging positional nystagmus lasting more than a minute were grouped ***,gender difference,side of involvement,and recurrence pattern were particularly ***-square and One way ANOVA tests were used to compare the difference between *** significance was set at Plight cupula as a new geotropic variant of cupular *** with persistent positional nystagmus present similar therapeutic outcomes and recurrence rates.

关键词： Geotropic Apogeotropic Lateral canal light cupula Heavy cupula

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