Abstract：
Video head impulse test (vHIT) and videonystagmography (VNG) provide significant benefits in evaluating benign paroxysmal positional vertigo (BPPV) and determining the semicircular canal localization of the otoconia.
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.
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.
摘要：
背景：视频头颅脉冲测试（vHIT）和视频眼震描记术（VNG）在评估良性阵发性位置性眩晕（BPPV）和确定耳突的半规管定位方面提供了显着的益处。
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）。虽然两组都用vHIT测量VOR增益，并在组间进行比较，使用VNG记录研究组在Dix-Hallpike操作期间观察到的眼球震颤的SPV值,并与研究组的VOR增益进行比较.
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）。尽管受影响的PSCC与对照组相比降低了VOR增益，它仍然在正常范围内。然而,受影响的PSCC的VOR增益与眼球震颤的SPV之间没有显着关系。
结论：vHIT可以帮助检测PSCC-BPPV患者的半规管功能障碍。Dix-Hallpike机动期间VNG上眼球震颤的SPV值与VOR增益水平无关。
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。
