Subjective visual vertical in vestibular disorders measured with the bucket test
Subjective visual vertical in vestibular disorders measured with the bucket test
复制标题
DOI：
10.3109/00016489.2012.668710
复制
发表时间：
2012-08-01
影响因子：
1.4
通讯作者：
Sangi-Haghpeykar, Haleh
中科院分区：
文献类型：
--
作者：
Cohen, Helen S.;Sangi-Haghpeykar, Haleh
结论：“桶测试”可能表明患有已知前庭障碍的患者存在空间定向缺陷，但由于接受者操作特征（ROC）值较低，因此它对于筛查人们的前庭障碍没有用处。目的：1) 验证单侧周围前庭无力 (UW) 患者与正常受试者在桶试验中的差异，2) 确定单侧良性阵发性位置性眩晕 (BPPV) 患者是否与正常受试者不同，3) 确定测试的敏感性和特异性。方法：将 UW (n = 25) 和 BPPV (n = 25) 患者与正常人 (n = 50) 进行比较。受试者观察放在桌子上的一个干净的桶，底部有一条垂直线。将其顺时针或逆时针旋转，每个方向进行三次试验，直到受试者表明该线是垂直的。相关测量是与真实垂直方向的偏差的平均绝对值。结果：一些（但不是全部）患者的反应与正常受试者不同，但反应也因年龄和性别而异。 ROC 值都很弱，即 < 0.8。没有良好的分界点来区分对照组和患者。因此，虽然桶测试对于描述患者的空间缺陷很有用，但该测试对于筛查人们可能的前庭损伤没有用处。
Conclusion: The 'bucket test' may indicate that patients with known vestibular disorders have spatial orientation deficits but due to the low receiver operating characteristics (ROC) values it is not useful for screening people for vestibular impairments. Objectives: 1) to verify that patients with unilateral peripheral vestibular weakness (UW) differ from normal subjects on the bucket test, 2) to determine if patients with unilateral benign paroxysmal positional vertigo (BPPV) differ from normal subjects, 3) to determine the sensitivity and specificity of the test. Methods: Patients with UW (n = 25) and BPPV (n = 25) were compared to normals (n = 50). Subjects looked into a clean bucket with a vertical line on the bottom, which rested on a table. It was rotated, clockwise or counterclockwise, for three trials per direction until the subject indicated that the line was vertical. The dependent measure was the mean absolute value of the deviations from the true vertical. Results: Some, but not all, patients' responses differed from normal subjects but responses also differed by age and sex. ROC values were all weak, i.e. < 0.8. No good cut-off points differentiated controls from patients. Thus, although the bucket test is useful for describing spatial deficits in patients this test is not useful for screening people for possible vestibular impairments.