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铁路煤运工人长期暴露于噪声、煤尘等有害环境中,为了进一步了解铁路煤运工人心血管系统的受损情况,我们对其进行了心电图、血压及总外周血管阻力检查。1对象与方法1.1对象选择铁路男性煤运工人300名作为观察组,平均年龄35.6(22～52)岁,平均工龄20.4(2～34)年。另选无噪声、无煤尘接触史且同等劳动强度的300名男性为对照组,
In order to know more about the damage to the cardiovascular system of railway coal transport workers, we exposed the railway coal transport workers to long-term exposure to such harmful environments as noise and coal dust. We conducted ECG, blood pressure and total peripheral vascular resistance tests. 1 Subjects and Methods 1.1 Object Selection 300 railway coal workers were employed as the observation group, with an average age of 35.6 (22-52 years) and an average length of service of 20.4 (2-34) years. Another 300 men with no noise, no dust and dust contact history and equal labor intensity were selected as the control group,