Gao Bo, Song Haitao, Zhou Jinmei, Huang Weining
Department of Otorhinolaryngology, Beijing Hospital, Ministry of Public Health, Beijing, 100073, China.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2010 Oct;24(19):865-9.
The objective of this study was to evaluate the utility of vestibular autorotation test in the diagnosis of BPPV.
VAT and caloric test were performed on 41 patients with BPPV. VAT results were analyzed according to the affected semicircular canal.
Results of VAT were abnormal in 34 (82.93%) patients with BPPV. Fourteen cases were found with abnormal vertical phase, 1 case with abnormal vertical gain in a total of 21 vertical semicircular canal BPPV patients. Six cases with abnormal horizontal phase lead, 5 cases with abnormal horizontal gain, 2 cases with asymmetry were found in 12 patients with horizontal semicircular canal BPPV. Phase lead was abnormal in all frequencies in 4 patients, and in 2-3 Hz in 21 patients. 24 (58.54%) patients showed abnormal canal paresis (CP) and direction preference (DP) in caloric test.
VAT can indicate information of vestibular function in both vertical and horizontal semicircular canal. Phase of VAT is constantly enhanced in BPPV, especially in 2-3 Hz. As the supplement of caloric test, VAT may prove helpful in assessment of semicircular canal function.
本研究的目的是评估前庭自旋转试验在良性阵发性位置性眩晕（BPPV）诊断中的效用。
对41例BPPV患者进行了前庭自旋转试验（VAT）和冷热试验。根据受累半规管分析VAT结果。
34例（82.93%）BPPV患者的VAT结果异常。在总共21例垂直半规管BPPV患者中，14例发现垂直相异常，1例发现垂直增益异常。在12例水平半规管BPPV患者中，6例发现水平相超前异常，5例发现水平增益异常，2例发现不对称。4例患者在所有频率下相超前均异常，21例患者在2 - 3Hz频率下相超前异常。24例（58.54%）患者在冷热试验中显示出异常的半规管轻瘫（CP）和方向优势（DP）。
VAT可以显示垂直和水平半规管的前庭功能信息。在BPPV中，VAT的相位持续增强，尤其是在2 - 3Hz频率下。作为冷热试验的补充，VAT可能有助于评估半规管功能。
