Faculty of Health Science, Department of Audiology, Selcuk University, Konya, Turkey.
Faculty of Health Science, Department of Audiology, Ankara Yıldırım Beyazit University, Ankara, Turkey.
Am J Otolaryngol. 2020 Nov-Dec;41(6):102665. doi: 10.1016/j.amjoto.2020.102665. Epub 2020 Aug 11.
The aim of this study was to evaluate the vestibular functions and dual-task performances of individuals with noise induced hearing loss.
Fifty individuals with noise induced hearing loss and 25 healthy individuals were included in the study. Individuals with noise induced hearing loss were divided into 2 groups according to the pure tone average. Twenty-five patients with bilateral pure tone average between 20 dB HL and 40 dB HL were included in group I and 25 patients with bilateral pure tone average higher than 40 dB HL were included in group II. One-leg standing test, functional reach test, timed-up and go test, head impulse test, head shaking test, spontaneous nystagmus test and caloric test were carried out to evaluate the vestibular systems of all individuals. Visual analog scale was used to evaluate the imbalance intensity of individuals. In order to evaluate the dual-task performances of the individuals, individuals were given cognitive and motor tasks simultaneously with timed up and go test.
Individuals in group II had more abnormal caloric responses than the control group and individuals in group I. Also, individuals with higher hearing loss exhibited worse performance than other groups in eyes-closed one-leg standing test and dual-task situations.
Individuals with higher hearing loss (>40 dB) had more abnormal vestibular test results and worse dual-task performance than other groups. Vestibular evaluation and dual-task performance evaluation of factory workers with noise induced hearing loss can provide useful information to determine the risk of falling and fall prevention strategies in these individuals.
本研究旨在评估噪声性听力损失患者的前庭功能和双重任务表现。
本研究纳入了 50 名噪声性听力损失患者和 25 名健康对照者。根据纯音平均听阈（PTA），将噪声性听力损失患者分为 2 组。25 名双侧 PTA 为 20-40dBHL 的患者归入组 I，25 名双侧 PTA 高于 40dBHL 的患者归入组 II。对所有个体进行单腿站立试验、功能性伸展试验、计时起立行走试验、摇头试验、自发性眼震试验和冷热试验以评估其前庭系统；采用视觉模拟评分法评估个体的失衡程度。为了评估个体的双重任务表现，在计时起立行走试验中同时给予认知和运动任务。
组 II 患者的冷刺激反应异常比例高于对照组和组 I 患者。此外，听力损失程度较高的患者在闭眼单腿站立试验和双重任务情况下的表现较其他组差。
听力损失程度较高（>40dB）的患者较其他组有更多的前庭功能测试异常和较差的双重任务表现。对噪声性听力损失的工厂工人进行前庭评估和双重任务表现评估，可以为这些个体的跌倒风险评估和跌倒预防策略提供有用信息。
