Objective: To learn about the cardiovascular health effects of workers expose to benzene-toluene-xylene and noise in painting workshop of automobile manufacturing enterprises, and to provide intervention measures and strategies for the health of workers. Methods: The effects of noise exposure, benzene-toluene-xylene exposure and combined exposure on workers' blood pressure and electrocardiogram were analyzed through epidemiological investigation, workplace monitoring and occupational health examination in several automobile enterprises which had carried out occupational hazard factors monitoring and occupational health examination in our hospital from April to October 2017. Results: There were differences in age, sex, working years, smoking, drinking and physical exercise among workers in different exposure groups (P<0.05) . The systolic blood pressure level of workers in benzene-toluene-xylene exposure group and combined exposure group was significantly different comparing with control group (P< 0.05) , After the factors of age and working years were adjusted. The abnormity rate of electrocardiogram in workers were not statistically significant in all groups (P>0.05) . Conclusion: The benzene-toluene-xylene exposure and noise combined with benzene-toluene-xylene exposure in painting workshop of automobile manufacturing enterprises has positive influence on the systolic blood pressure of workers. Regular physical examination and health intervention measures should be strengthened to improve health.
目的： 了解某汽车制造企业涂装车间苯、甲苯、二甲苯（简称混苯）及噪声职业接触对工人心血管健康的影响，为工人健康干预提供措施和策略。 方法： 选取2017年4~10月于广州市职业病防治院进行职业病危害因素监测及职业健康检查的某汽车企业涂装和总装车间827人为接触组，无职业病危害因素接触的330人为对照组。通过流行病学调查，工作场所职业病危害因素监测及工人的职业健康检查，分析噪声接触、混苯接触及联合接触对各组工人血压及心电图的影响。 结果： 不同接触组与对照组工人的年龄、性别、工龄、吸烟、喝酒及运动状况方面差异均有统计学意义（P<0.05）；与对照组比较，混苯接触组及联合接触组工人的收缩压明显增高（P<0.05），各接触组工人心电图异常率差异无统计学意义（P>0.05）。 结论： 汽车制造企业涂装车间混苯及混苯噪声联合接触对工人的血压可能存在影响，且以影响收缩压为主，应加强对工人的健康干预，定期体检。.
Keywords: Benzene; Cardiovascular system; Noise, occupational; Toluene; Xylene.