首页> 外文期刊>Otology and neurotology: official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology >Effect of Gaze Angle During the Vertical Video Head Impulse Test Across Two Devices in Healthy Adults and Subjects With Vestibular Loss
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Effect of Gaze Angle During the Vertical Video Head Impulse Test Across Two Devices in Healthy Adults and Subjects With Vestibular Loss

机译:垂直录像头在健康成年人的两个装置中脉冲角度的影响和前庭损失的主题

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Objective:To evaluate the effect of gaze angle on vertical vestibulo-ocular reflex (VOR) gain using two different video head impulse (vHIT) devices in healthy adults and subjects with bilateral vestibular loss (BVL).Study Design:Prospective study.Setting:Hospital research laboratory.Subjects:Twenty-four healthy adults (mean [standard deviation {SD}] age = 32 [4.8]; 23-42; 8 men) and four subjects with previously diagnosed BVL (mean age [SD]=32 [8.2]; 21-40; 3 men) participated.Intervention:Vertical canal vHIT was administered with two different devices using three gaze angles (-45 degrees, 0 degree, +45 degrees). These devices have different gain calculation algorithms and different head and gaze angle protocols.Main Outcome Measures:Vertical canal gain and presence or absence of reset saccades.Results:A significant stepwise reduction in vHIT gain was noted as gaze moved away from the plane of the canals stimulated (from -45 degrees to 0 degree, to +45 degrees) for both healthy adults and subjects with BVL. vHIT gain was able to separate the two groups using gaze angles -45 degrees and 0 degree.Conclusions:In spite of their differences in gain algorithm and recommended head position and gaze angle, each device was able to appropriately separate healthy adults from subjects with BVL with high sensitivity/specificity.
机译:目的:评价凝视角对垂直前景 - 眼睛反射(VHIT)增益的效果,使用健康成人的两种不同的视频头部脉冲(VHIT)器件,具有双侧前庭损失(BVL)的受试者.Study设计:潜在研究。诱缝:医院研究实验室。索赔:二十四名健康成人(平均[标准偏差{Sd}] = 32 [4.8]; 23-42; 8人)和四个受试者,具有先前诊断的BVL(平均年龄[SD] = 32 [ 8.2]; 21-40; 3人)参与。专业:使用三个凝视角度(-45度,0度,+ 45度)用两个不同的设备进行垂直管vhit。这些设备具有不同的增益计算算法和不同的头部和凝视角协议。此外的结果措施:垂直管增益和复位扫视的存在或不存在。结果:VHIT增益的显着逐步减少,因为凝视从飞机移开用于健康成年人和BVL的受试者,运河刺激(从-45度到0度,+ 45度)。 VHIT增益能够使用凝视角度为-45度和0度分离两组具有高灵敏度/特异性。

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