健康人群视频头脉冲正常值的测定

Normal Values of Video-Head Impulse Test in Healthy People

目的探讨健康人群视频头脉冲试验正常值以及年龄因素的影响。方法纳入111名健康受试者,以10岁为间隔分为7个年龄组,应用视频头脉冲试验仪进行检查,统计各组前庭眼反射的增益值以及共轭不对称比,分析年龄因素的影响。结果受试健康人群中水平半规管增益值波动于0.70~1.26,平均为1.04±0.09,前半规管和后半规管增益值分别值波动于0.61~1.25和0.62~1.24,平均值分别为0.89±0.13和0.88±0.12;不同年龄组之间,水平半规管以及垂直半规管的增益值均无区别(P>0.05);水平半规管左右侧不对称比的平均值为6.83±4.01%,左前与右后半规管以及右前与左后半规管的不对称比的平均值分别为6.03±5.31%和7.36±5.03%,不同年龄组之间无区别(P>0.05)。结论健康人群中视频头脉冲试验的增益值及共轭不对称比不受年龄的影响。

Objective To report normal values and age-related changes of video-head impulse test(v HIT) in healthy volunteers. Methods One hundred and eleven healthy volunteers were divided into seven age groups, and subjected to video-head impulse tests. The vestibulo-ocular reflex(VOR) gain and gain asymmetry ratios were analyzed and compared among groups. Results For these healthy subjects, the mean horizontal VOR gain was 1.04 ± 0.09(0.70-1.26), and the mean anterior and posterior VOR gains were 0.89±0.13(0.61-1.25) and 0.88±0.12(0.62-1.24). There were no significant differences in horizontal and vertical VOR gains among the different age groups(P>0.05). The mean left and right horizontal gain asymmetry ratio was 6.83±4.01%. The mean left-anterior and right-posterior(LARP)and right-anterior and left-posterior(RALP) gain asymmetry ratios were 6.03±5.31% and 7.36±5.03%. There were no significant differences in gain asymmetry ratios among different age groups(P>0.05). Conclusion There are no obvious age-related changes in VOR gain and gain asymmetry ratios in healthy people.