噪声对作业人员血脂影响的调查

目的了解噪声对作业人员血脂的影响，为更好地保护噪声作业人员身体健康提供科学依据。方法选择某油田噪声作业人员2261人为噪声组，以该油田既往无噪声接触史的机关、后勤服务人员1258人为对照组，对两组人员进行职业健康检查，包括纯音听力测试、血脂检测，结合噪声监测资料对检查结果进行分析。结果噪声组血脂异常的检出率显著高于对照组（P〈0．01）；噪声组不同性别3个年龄组甘油三酯、胆固醇（TG、TC）异常检出率与对照组的差异均有统计学意义（P〈0．01）；而不同性别3个年龄组高密度脂蛋白胆固醇、低密度脂蛋白胆固醇（HDL-C、LDL-C）异常检出率与对照组的差异均无统计学意义（P〉0．05）。噪声组接触噪声工龄与血脂异常检出率之间的相关性分析表明，二者呈正相关关系（r=0．219，P〈0．01），噪声强度与TG、TC异常检出率均呈正相关关系（rTG=0．122，P〈0．01；rTC=0．092，P〈0．01）。结论噪声可引起作业人员血脂中TG、TC升高，且接触噪声工龄越长，强度越大，TG、TC异常的检出率越高，表明接触噪声工龄、强度与TG、TC异常之间均存在剂量一效应关系。

Influence of noise on blood lipid among workers

Objective ] To understand the influence of noise on blood lipid among workers, provide a scientific basis for better pro tecting the health of workers exposed to noise. Methods] 2 261 workers exposed to noise in an oilfield were selected as the noise group, 1 258 office and logistics service personnel in the same oilfield who had no history of noise exposure were selected as the control group. The two groups were given occupational health examination, including pure tone audiometry and blood lipid detection. The results were analyzed combining with noise monitoring data. Results ] The detection rate of dyslipidemia in noise group was significantly higher than that in the control group C P 〈 0.01 }. Compared with the control group, the differences of detection rate of abnormal TG and TC in 3 age groups of different gender in noise group were statistically significant C P 〈0.01 ）. While the differences of detection rate of abnormal HDL-C and LDL-C in 3 age groups of different gender were not statistically significant （P 〉 0.05 }. In the noise group, the length of noise exposure and detection rate of dyslipidemia showed a positive correlation （r =0.219, P 〈0.01）, and also the intensity of noise and detection rates of abnormal TG and TC were positively correlated I rTG = 0. 122, P 〈 0.01 ; rTC = 0.092, P 〈 0.01 }. Conclusion] Noise can cause the increasing of blood TG and TC, and the lon- ger the exposure to noise and the greater the intensity of the noise, the higher the detection rates of abnormal TG and TC are, which suggest a dose-response relationship between the length of noise exposure, the strength of the noise and abnormal TG and TC.