摘要
目的:建立不同头位偏斜角度下的主观视觉垂直线(subjective visual vertical,SVV)正常值数据,并分析其复测信度,为SVV的临床应用提供参考.方法:选取31名健康青年人,佩戴虚拟现实眼镜,分别测试在直立头位0°、左头位偏斜45°(L45°)、右头位偏斜45°(R45°)、左头位偏斜90°(L90°)、右头位偏斜90°(R90°)5个不同角度下的SVV数据,并于2周后进行复测.结果:①0°、L45°、R45°、L90°、R90° 5个不同头位偏斜角度下的SVV平均值分别为:-0.07±1.71、4.30±5.39、-6.51±5.58、-3.76±7.42、0.40±8.02,95％CI 分别为:(-3.42,3.28)、(-6.26,14.86)、(-17.45,4.43)、(-18.30,10.78)、(-15.32,16.12);② L45°、R45°、L90°、R90°4 个不同头位偏斜角度下的SVV偏差绝对值分别为:5.62±3.96、6.90±5.07、6.82±4.70、6.48±4.68;95％CI分别为:(0,12.11)、(0,15.21)、(0,14.53)、(0,14.16);双侧45°偏差绝对值的不对称性比为10％;双侧90°偏差绝对值的不对称性比为 3％;③0°、L45°、R45°、L90°、R90° SVV 的组内相关系数分别为 0.757、0.673、0.674、0.815、0.856.结论:SVV具有良好的复测信度,临床测试稳定性高,本研究建立的不同偏斜角度下SVV正常值数据可辅助临床对前庭系统疾病进行精细化诊断和功能评估.
Abstract
Objective:To establish the normal values of subjective visual vertical(SVV)in different head deflection angles and analyze its test and retest reliability,in order to provide a reference for the clinical application of SVV in the evaluation of vestibular disorders.Methods:Thirty-one healthy young people were selected to wear VR glas-ses,and the SVV data were tested in five different head-tilt,namely,0° in the upright head position,45°in the left head position,45° in the right head position,90° in the left head position,and 90° in the right head position,and were re-tested 2 weeks later.Results:①The mean values of SVV at 5 different head-tilt angles of 0°,left 45°,right 45°,left 90°,and right 90° were-0.07±1.71,4.30±5.39,-6.51±5.58,-3.76±7.42,and 0.40±8.02,respectively,The 95％confidence limits of SVV at 0°,left 45°,right 45°,left 90°,right 90°,and right 90° were(-3.42,3.28),(-6.26,14.86),(-17.45,4.43),(-18.30,10.78),and(-15.32,16.12),respec-tively;②The absolute values of SVV at 4 different head-tilt angles of left 45°,right 45°,left 90°,and right 90° were 5.62±3.96,6.90±5.07,6.82±4.70 and 6.48±4.68,respectively.The 95％confidence limits of SVV at left 45°,right 45°,left 90°,right 90°,and right 90° were(0,12.11),(0,15.21),(0,14.53)and(0,14.16),respec-tively.The asymmetry ratio is 10％for the absolute value of the 45 ° deviation and 3％for the absolute value of the 90°deviation;③Intra-class correlation coefficients(ICC)for 0°,left 45°,right 45°,left 90°,right 90°were 0.757,0.673,0.674,0.815,and 0.856,respectively.Conclusion:SVV has good retest reliability and high sta-bility,and the SVV normal value data of different head deviation angles established in the present study can be used as a reference for the diagnosis and evaluation of vestibular disorders.
NETL
NSTL
万方数据