Skull vibration-induced nystagmus test in unilateral superior canal dehiscence and otosclerosis: a vestibular Weber test
Skull vibration-induced nystagmus test in unilateral superior canal dehiscence and otosclerosis: a vestibular Weber test
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DOI：
10.3109/00016489.2014.888591
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发表时间：
2014-06-01
影响因子：
1.4
通讯作者：
Schmerber, Sebastien
中科院分区：
文献类型：
--
作者：
Dumas, Georges;Lion, Alexis;Schmerber, Sebastien
结论：颅骨振动诱发眼震试验(SVINT)可作为前庭Weber试验，提示振动性眼震(VIN)主要发生在顶端，上神经管裂开(SCD)患者较耳硬化症(OS)患者更易出现水平或扭转成分向病变侧方跳动。在SCD中，VIN垂直分量通常是最抢眼的。这些结果表明，更多的是前庭的整体贡献，而不是上半规管的单独刺激。目的：本研究旨在探讨单侧SCD或OS相关传导性耳聋患者在SVINT治疗中发生眼球震颤的可能性。方法：记录单侧耳部病变患者(SCD组17例，OS组38例)和正常对照组12例的VIN水平、扭转和垂直成分的慢相速度(SPV)。在顶端和每个乳突上分别施加振动刺激(60 Hz、100 Hz)。结果：在SCD中，VIN的发生率为82%，主要为扭转、水平和垂直(上搏动)成分，分别为40%、30%和30%。水平和扭转成分向病变一侧跳动的频率比OS更高。顶端刺激后SPV升高。在OS中，VIN稀疏且波幅低，且不能系统地偏侧到特定的一侧。
Conclusions: The skull vibration-induced nystagmus test (SVINT) acts as a vestibular Weber test and reveals a vibration-induced nystagmus (VIN), elicited mainly on the vertex location, with a horizontal or torsional component beating more often toward the side of the lesion in superior canal dehiscence (SCD) than in otosclerosis (OS). In SCD, the VIN vertical component is most often up-beating. These results suggest more a global vestibular contribution than the sole stimulation of the superior semicircular canal. Objectives: This study aimed to evaluate the possible occurrence of nystagmus during SVINT in unilateral conductive hearing loss related to SCD or OS. Methods: The slow-phase velocities (SPVs) of the VIN horizontal, torsional, and vertical components were recorded in patients with a unilateral otologic lesion (17 SCD, 38 OS) and 12 control subjects. Vibratory stimulations (60 Hz, 100 Hz) were applied on the vertex and on each mastoid. Results: In SCD, VIN was observed in 82% of patients with a primarily torsional, horizontal, and vertical (up-beating) component in 40%, 30%, and 30%, respectively. Horizontal and torsional components beat toward the side of the lesion more often than in OS. Higher SPVs were observed after vertex stimulation. In OS, VIN was sparse with low amplitude and was not systematically lateralized to a specific side.