摘要
目的:建立不同头位倾斜角度下健康青年人的主观视觉水平线(subjective visual horizontal,SVH)正常值数据,并分析其复测信度,为SVH在前庭系统疾病的精细化诊断和功能评估提供正常值参考.方法:选取31名健康青年人,佩戴虚拟现实眼镜分别测试直立头位0°、头向左侧偏斜45°(L45°)、头向右侧偏斜45°(R45°)、头向左侧偏斜90°(L90°)、头向右侧偏斜90°(R90°)5个不同头位偏斜角度下的SVH数据,并于2周后进行复测.结果:① 0°、L45°、R45°、L90°、R90° 下的 SVH 正常值分别为 0.30±1.32,5.94±5.54,-11.44±5.32,-0.87±8.63,-2.70±8.02;② 0°、L45°、R45°、L90°、R90° SVH 的 95％CI 分别为:(-2.34,2.94)、(-5.14,17.02)、(-22.08,-0.80)、(-18.13,16.39)、(-18.74,13.34);双侧 45° 偏差绝对值的不对称性比为26.4％;双侧90°偏差绝对值的不对称性比为1.3％;③组内相关系数(intra-class correlation coefficient,ICC)分别为0.625,0.641,0.564,0.769,0.656.结论:SVH具有良好的复测信度,临床测试可靠性高,本研究建立的不同偏斜角度下SVH正常值数据可为前庭系统疾病的精细化诊断和功能评估提供临床参考.
Abstract
Objective:To establish the normal values of subjective visual horizontal(SVH)under different head tilt angles,analyze the test-retest reliability,and provide a normal value reference for the refined diagnosis and functional as-sessment of SVH in clinical vestibular disorders.Methods:Thirty-one healthy young people were selected to wear visual reality glasses to test SVH data in five different head tilt angles:upright head position 0°,head tilted 45°to the left(L45°),head tilted 45° to the right(R45°),head tilted 90° to the left(L90°),and head tilted 90° to the right(R90°),and were re-tested 2 weeks later.Results:① The normal values of SVH at 0°,L45°,R45°,L90°,and R90°were 0.30±1.32,5.94±5.54,-11.44±5.32,-0.87±8.63,-2.70±8.02,respectively.②The 95％confidence intervals of SVH at 0°,L45°,R45°,L90°,and R90° were:(-2.34,2.94),(-5.14,17.02),(-22.08,-0.80),(-18.13,16.39),(-18.74,13.34),respectively.The ratio of asymmetry in the absolute value of bilateral 45° deviation was 26.4％and the ratio of asymmetry in the absolute value of bilateral 90° deviation was 1.3％.③The intra-class correla-tion coefficient(ICC)for 0°,L45°,R45°,L90° and R90° was 0.625,0.641,0.564,0.769,0.656,respectively.Con-clusion:SVH has good test-retest reliability and high clinical test stability and stability.The data on normal values of SVH at different head tilt angles established in this study can provide clinical references for the refined diagnosis and func-tional assessment of vestibular system disorders.
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万方数据