Chen Y L, Wang C, Liu Y T, Li Y L, Li X F, Lyu Y F, Song Y D, Zhang D G
Department of Vertigo Disease, Shandong Provincial ENT Hospital, Shandong University, Jinan 250022, China.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2025 Jun 7;60(6):630-637. doi: 10.3760/cma.j.cn115330-20240703-00399.
To study the feasibility of detecting vertical semicircular canal function and to analyze the three-dimensional(3D)characteristics and normal reference value in healthy young people. This was a cross-sectional study conducted from January to June 2024. A three-axis rotating chair was used to perform vertical sinusoidal rotation on 52 healthy young adults (26 males and 26 females, aged 18-40 years) in the left anterior-right posterior (LARP) and right anterior-left posterior (RALP) semicircular canal planes. For each plane, nystagmus was induced with six combinations of different angles and velocity front and back rotation angles of ±30°,±60°,±90°, and velocities of 40°/s and 80°/s, the slow phase velocity (SPV) and their symmetry of 3D nystagmus were analyzed. SPSS 20.0 was used to compare the statistical differences in these two parameters across different stimulation protocols. There were no spontaneous nystagmus in the 52 subjects, and all tests were finished. Except the combinations of (±30°-40°/s), three components of nystagmus were induced stably in the rest of the stimulations. The SPVs of vertical components were no statistically insignificant (>0.05), and some horizontal or torsion components were statistically significant (<0.05). The 95% reference range of the symmetry was≤25% in the vertical and≤30% in the torsional component of the nystagmus except for (±30°-80°/s), the symmetry was 32.2% and 49.2% respectively. The trend changes of the three components were consistent, among which the vertical and torsional components induced by (±60°-80°/s) and (±90°-80°/s) were the best, the SPV value of the vertical components was higher in the latter group than the former apart from the front RALP, while no significant difference was found in the torsional components (>0.05). The (±90°-80°/s) combination is the optimal method to detect the function of vertical semicircular canal in 3D chair test. When observing torsional component, the combining scheme of (±60°-80°/s) and (±90°-80°/s) is better. Considering tolerance, the (±60°-80°/s) combination is recommended.
研究检测垂直半规管功能的可行性，并分析健康年轻人的三维（3D）特征及正常参考值。这是一项于2024年1月至6月进行的横断面研究。使用三轴转椅在左前 - 右后（LARP）和右前 - 左后（RALP）半规管平面上对52名健康年轻人（26名男性和26名女性，年龄18 - 40岁）进行垂直正弦旋转。对于每个平面，采用六种不同角度和速度的前后旋转角度组合（±30°、±60°、±90°）以及40°/秒和80°/秒的速度诱发眼震，分析三维眼震的慢相速度（SPV）及其对称性。使用SPSS 20.0比较这两个参数在不同刺激方案下的统计学差异。52名受试者均无自发性眼震，所有测试均完成。除（±30° - 40°/秒）组合外，其余刺激均能稳定诱发眼震的三个成分。垂直成分的SPV无统计学意义（>0.05），部分水平或扭转成分有统计学意义（<0.05）。除（±30° - 80°/秒）外，眼震垂直成分对称性的95%参考范围≤25%，扭转成分≤30%，该组合的对称性分别为32.2%和49.2%。三个成分的趋势变化一致，其中（±60° - 80°/秒）和（±90° - 80°/秒）诱发的垂直和扭转成分最佳，除前RALP外，后一组垂直成分的SPV值高于前一组，而扭转成分无显著差异（>0.05）。（±90° - 80°/秒）组合是三维转椅试验中检测垂直半规管功能的最佳方法。观察扭转成分时，（±60° - 80°/秒）和（±90° - 80°/秒）的联合方案较好。考虑到耐受性，推荐（±60° - 80°/秒）组合。
