Heidenreich Katherine D, Beaudoin Kelly, White Judith A
Section of Vestibular and Balance Disorders, The Head and Neck Institute, The Cleveland Clinic, Cleveland, OH 44195, USA.
Am J Otolaryngol. 2009 Sep-Oct;30(5):353-5. doi: 10.1016/j.amjoto.2008.06.017. Epub 2009 Mar 6.
We present a patient with positive head thrust test (HTT) and video-oculography (VOG) findings suggestive of active lateral semicircular canal (LSCC) benign paroxysmal positional vertigo (BPPV). This patient was seen in a tertiary vestibular clinic for episodic vertigo. He exhibited robust corrective refixation saccades on HTT to the right and evidence of active contralateral LSCC BPPV on positional testing. Treatment of the LSCC BPPV led to immediate resolution of vertigo and near-normalization of the HTT on follow-up testing. The pathophysiologic basis and clinical implications of LSCC BPPV mimicking a false-positive HTT are discussed in detail.
我们报告了一名头部脉冲试验（HTT）和视频眼震图（VOG）结果呈阳性的患者，这些结果提示存在活动性水平半规管（LSCC）良性阵发性位置性眩晕（BPPV）。该患者因发作性眩晕就诊于一家三级前庭诊所。他在HTT时向右表现出强烈的矫正性重新注视扫视，并且在位置试验中显示有活动性对侧LSCC BPPV的证据。LSCC BPPV的治疗使眩晕立即得到缓解，且在随访测试中HTT接近正常。我们详细讨论了模仿假阳性HTT的LSCC BPPV的病理生理基础和临床意义。
