Yang Chul Won, Kim Sang Hoon, Yeo Seung Geun, Park Moon Suh, Byun Jae Yong
a Department of Otorhinolaryngology, Head and Neck Surgery , Graduate School, Kyung Hee University , Seoul , Korea.
Acta Otolaryngol. 2017 Feb;137(2):221-224. doi: 10.1080/00016489.2016.1221131. Epub 2016 Sep 9.
oVEMP could be a useful tool for predicting the prognosis of Bell's palsy comparable to ENoG and H-B grade.
Several previous studies have reported cases of Bell's palsy with vestibular function disorder. The basic hypothesis behind this effect lies in the close proximity of the vestibular and facial nerves in the internal auditory canal (IAC). Therefore, the aim of this study was to investigate the correlation between Bell's palsy prognosis and ocular vestibular evoked myogenic potentials (oVEMPs).
Total 104 consecutive patients who were diagnosed with Bell?s palsy from January 2012 to December 2014 were enrolled. Patients were divided into complete recovery group and incomplete recovery group. All of patients underwent oVEMP recordings within 1 week after disease onset. For the evaluation of correlation between H-B grades, ENoG, oVEMP and Recovery of Bell?s palsy, logistic regression analysis was performed.
The mean value of ocular vemp asymmetry was significantly higher in the incomplete recovery group than the complete recovery group (p < 0.05). No association was found between the ipsilesional PTA threshold, caloric test, and rate of abnormal EMG and recovery state. However, the initial state of ENoG, initial H-B grade, and oVEMP abnormal findings (Latency & Amplitude symmetry ratio) were significantly correlated with the rate of recovery (p = 0.025, p = 0.013, and p < 0.005, respectively).
眼震电图（oVEMP）可能是一种预测贝尔面瘫预后的有用工具，可与神经电图（ENoG）和House-Brackmann（H-B）分级相媲美。
此前多项研究报道了贝尔面瘫合并前庭功能障碍的病例。这种效应背后的基本假设在于内耳道（IAC）中前庭神经和面神经位置相近。因此，本研究旨在探讨贝尔面瘫预后与眼震诱发肌源性电位（oVEMP）之间的相关性。
纳入2012年1月至2014年12月期间连续诊断为贝尔面瘫的104例患者。将患者分为完全恢复组和不完全恢复组。所有患者在发病后1周内进行oVEMP记录。为评估H-B分级、ENoG、oVEMP与贝尔面瘫恢复情况之间的相关性，进行了逻辑回归分析。
不完全恢复组的眼震电图不对称均值显著高于完全恢复组（p<0.05）。患侧纯音听阈（PTA）、冷热试验及肌电图异常率与恢复状态之间未发现关联。然而，ENoG的初始状态、初始H-B分级及oVEMP异常表现（潜伏期和波幅对称率）与恢复率显著相关（分别为p = 0.025、p = 0.013和p<0.005）。
