PDF(Pubmed)
Abstract：
UNASSIGNED: Occupational workers are increasingly aware of the risk of noise overexposure to the auditory system but lack awareness about potential risks to the vestibular system. The purpose of this study was to investigate changes in vestibular end organ function in a known at-risk noise-exposed population, firefighters compared to age- and sex-matched controls using electrophysiologic measures of cervical vestibular evoked myogenic potentials (cVEMP).
UNASSIGNED: A cross-sectional observational study compared cVEMP response characteristics in 38 noise-exposed firefighters. Firefighters were grouped by years of exposure in the fire service. The cVEMP responses were compared within firefighter groups and between firefighters and age- and sex-matched controls. Dependent variables included the response characteristics of amplitude, latency and threshold.
UNASSIGNED: cVEMP response amplitudes were significantly decreased in firefighters compared to their age- and sex-matched controls. Threshold of the cVEMP responses were significantly higher in firefighters compared to controls and firefighters had a higher incidence of absent cVEMP responses compared to controls. Response amplitudes decreased with increasing years in the fire-service at an increased rate compared to their age- and sex-matched controls. Latency of the cVEMP response was not significantly different in firefighters compared to controls. These findings are consistent with both animal and human studies suggesting noise-induced changes in the sacculocollic pathway.
UNASSIGNED: In the absence of any reported vestibular symptoms or auditory indicators of noise-induced hearing loss, these early effects on the vestibular system point to a potential hidden vestibular loss.
UNASSIGNED: A cross-sectional observational study compared cVEMP response characteristics in 38 noise-exposed firefighters. Firefighters were grouped by years of exposure in the fire service. The cVEMP responses were compared within firefighter groups and between firefighters and age- and sex-matched controls. Dependent variables included the response characteristics of amplitude, latency and threshold.
UNASSIGNED: cVEMP response amplitudes were significantly decreased in firefighters compared to their age- and sex-matched controls. Threshold of the cVEMP responses were significantly higher in firefighters compared to controls and firefighters had a higher incidence of absent cVEMP responses compared to controls. Response amplitudes decreased with increasing years in the fire-service at an increased rate compared to their age- and sex-matched controls. Latency of the cVEMP response was not significantly different in firefighters compared to controls. These findings are consistent with both animal and human studies suggesting noise-induced changes in the sacculocollic pathway.
UNASSIGNED: In the absence of any reported vestibular symptoms or auditory indicators of noise-induced hearing loss, these early effects on the vestibular system point to a potential hidden vestibular loss.
摘要：
■职业工作者越来越意识到噪声过度暴露于听觉系统的风险，但缺乏对前庭系统潜在风险的认识。这项研究的目的是调查已知风险噪声暴露人群的前庭末端器官功能的变化，使用宫颈前庭诱发肌源性电位（cVEMP）的电生理测量，将消防员与年龄和性别匹配的对照进行比较。
■一项横断面观察性研究比较了38名噪声暴露消防员的cVEMP响应特征。消防员按在消防部门的暴露年限进行分组。在消防员小组内以及消防员与年龄和性别匹配的对照组之间比较了cVEMP反应。因变量包括振幅的响应特性，延迟和阈值。
■与年龄和性别匹配的对照组相比，消防员的cVEMP反应幅度显着降低。与对照组相比，消防员的cVEMP反应阈值明显更高，而消防员的cVEMP反应缺失发生率高于对照组。与年龄和性别匹配的对照组相比，响应幅度随消防服务年限的增加而降低。与对照组相比，消防员的cVEMP反应潜伏期没有显着差异。这些发现与动物和人类研究一致，表明噪声引起的糖通道变化。
■在没有任何报告的前庭症状或噪声引起的听力损失的听觉指标的情况下，这些对前庭系统的早期影响指向潜在的隐匿性前庭丢失。
■一项横断面观察性研究比较了38名噪声暴露消防员的cVEMP响应特征。消防员按在消防部门的暴露年限进行分组。在消防员小组内以及消防员与年龄和性别匹配的对照组之间比较了cVEMP反应。因变量包括振幅的响应特性，延迟和阈值。
■与年龄和性别匹配的对照组相比，消防员的cVEMP反应幅度显着降低。与对照组相比，消防员的cVEMP反应阈值明显更高，而消防员的cVEMP反应缺失发生率高于对照组。与年龄和性别匹配的对照组相比，响应幅度随消防服务年限的增加而降低。与对照组相比，消防员的cVEMP反应潜伏期没有显着差异。这些发现与动物和人类研究一致，表明噪声引起的糖通道变化。
■在没有任何报告的前庭症状或噪声引起的听力损失的听觉指标的情况下，这些对前庭系统的早期影响指向潜在的隐匿性前庭丢失。
