Occupational Health Engineering, Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Work. 2021;70(3):875-882. doi: 10.3233/WOR-213607.
Research has shown that the decrease in the inner diameter of vessels caused by hyperlipidemia lowers the capacity for blood oxygen delivery to the cochlea. This leads to impaired cochlear metabolism and causes hearing problems.
The effects of dyslipidemia on noise-induced hearing loss in workers were examined.
This descriptive cross-sectional study was performed on 692 male employees in a petrochemical industry in the southwest of Iran exposed to 85 dB noise. Clinical audiometry and blood sample tests were used to evaluate the hearing and prevalence indices of dyslipidemia (cholesterol, triglyceride, HDL and LDL). The data were analyzed using SPSS software version 25 (p = 0.05).
The results showed that the prevalence of dyslipidemia was 24.5% with abnormal relative triglyceride frequency of 49.5%, HDL of 28%, LDL of 33%, and total blood cholesterol level of 37.8%. There was no significant relationship between NIHL and dyslipidemia (p > 0.09). However, the major NIHL drops at different frequencies were in the individuals with dyslipidemia. The parameters age and dyslipidemia increased NIHL odds ratio (95% C.I.) by 1.130 (1.160-1.100) and 1.618 (2.418-1.082) respectively.
The rate of hearing loss in individuals with dyslipidemia increases at different frequencies and it leads to an increase of the OR of NIHL in individuals with dyslipidemia. We can control dyslipidemia and its effective factors. The NIHL is more common in people exposed to noise.
研究表明，高血脂导致血管内径减小，降低了向耳蜗输送血氧的能力。这会导致耳蜗代谢受损，引起听力问题。
研究血脂异常对工人噪声性听力损失的影响。
本研究为横断面描述性研究，在伊朗西南部一家石化厂，对 692 名暴露于 85dB 噪声的男性员工进行了研究。采用临床听力测试和血液样本检测，评估血脂异常（胆固醇、甘油三酯、高密度脂蛋白和低密度脂蛋白）的听力和流行指数。使用 SPSS 软件版本 25（p=0.05）对数据进行分析。
结果显示，血脂异常的患病率为 24.5%，相对甘油三酯异常频率为 49.5%，高密度脂蛋白为 28%，低密度脂蛋白为 33%，总胆固醇水平为 37.8%。噪声性听力损失与血脂异常之间无显著关系（p>0.09）。然而，血脂异常患者在不同频率下的主要听力损失程度更大。参数年龄和血脂异常使噪声性听力损失的优势比（95%置信区间）分别增加 1.130（1.160-1.100）和 1.618（2.418-1.082）。
血脂异常患者在不同频率下的听力损失率增加，导致血脂异常患者噪声性听力损失的 OR 增加。我们可以控制血脂异常及其相关因素。噪声暴露者的听力损失更为常见。
