This study aimed to investigate the relationship between vestibular-ocular reflex (VOR) gains measured via vHIT and the slow-phase velocity (SPV) of nystagmus in patients with the posterior semicircular canal (PSCC)-BPPV.
Sixty-two patients were included in this study and divided into the study (n = 32, patients with isolated PSCC-BPPV) and control (n = 30, age- and sex-matched healthy individuals) groups. While VOR gains were measured with vHIT in both groups and compared between groups, the SPV values of nystagmus observed during the Dix-Hallpike maneuver in the study group were recorded using VNG and compared with the VOR gains of the study group.
There were significant differences in posterior canal VOR gains between the study and control groups (p < 0.001 and p < 0.01, respectively). Although the affected PSCC had decreased VOR gains versus the control group, it was still within the normal range. However, there was no significant relationship between the VOR gains of the affected PSCC and the SPV of the nystagmus.
vHIT can help detect semicircular canal dysfunction in patients with PSCC-BPPV. The SPV values of nystagmus on VNG during the Dix-Hallpike maneuver do not correlate with the level of VOR gain.
目的:本研究旨在探讨通过vHIT测量的前庭眼反射(VOR)增益与后半规管(PSCC)-BPPV患者眼球震颤的慢相速度(SPV)之间的关系。
方法:本研究包括62例患者,并分为研究组(n=32,分离的PSCC-BPPV患者)和对照组(n=30,年龄和性别匹配的健康个体)。
结果:BPPV组和对照组的后管VOR增益存在显着差异(分别为p<0.001和p<0.01)。
结论:vHIT可以帮助检测PSCC-BPPV患者的半规管功能障碍。