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目的通过比较同期接触粉尘和噪声的职业人群与仅接触粉尘的职业人群的血脂各项指标之间的差异,探索噪声对血脂的影响规律,为保护职业噪声接触人群的健康提供依据。方法采用现况研究方法,通过问卷调查收集观察对象的一般情况。采用自动生化分析仪检测血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)水平。比较同时接触粉尘和噪声与仅接触粉尘二组之间血脂各指标差异。结果与正常对照组比较,噪声可引起接噪人员血清TC、TG水平升高和HDL水平下降(P<0.05),但未发现噪声导致的LDL水平升高;长期接触噪声后,血清TC和TG的异常率升高(P<0.05),而HDL和LDL的异常率没有明显变化。结论长期的噪声接触可使接噪工人血清TC、TG、HDL水平升高;并使作业工人发生高TC血症和高TG血症的机会增加。
Objective To explore the influence of noise on blood lipids by comparing the differences of serum lipids between occupational groups exposed to dust and noise in the same period and occupational groups exposed to dust only and provide basis for protecting the health of exposed groups with occupational noise. Methods Using the current research methods, the general situation of the observed object was collected through questionnaire survey. Serum total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL) and low density lipoprotein (LDL) levels were measured by automatic biochemical analyzer. Compare the difference of each index of blood lipid between the two groups exposed to dust and noise at the same time and the only contact with dust. Results Compared with the normal control group, noise could cause the level of serum TC and TG and the level of HDL decreased (P <0.05), but no increase of noise caused LDL. After prolonged exposure to noise, the levels of TC and TG (P <0.05), while the abnormal rates of HDL and LDL did not change significantly. Conclusion Long-term noise exposure may increase the levels of serum TC, TG and HDL in noise-exposed workers and increase the chance of workers with high TC and high TG levels.