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目的了解洗煤厂煤尘接触者心电图的改变,早期发现心电图变化,预防心血管疾病的发生。方法某洗煤厂煤尘接触者294人为观察组,该厂不接触煤尘者280人为对照组,对两组心电图检查结果进行统计分析。结果观察组心电图异常率为27.21%,对照组心电图异常率为10.71%,观察组ST-T异常及窦性心动过缓异常率高于对照组,差异均有统计学意义(P<0.01);观察组心电图异常率除56~60岁年龄段外,其他各年龄段与对照组相比,差异均有统计学意义;观察组心电图异常率除21~25年及36年以上接尘工龄段外,其他各接尘工龄段与对照组相比,差异均有统计学意义;观察组年龄46~50岁、接尘工龄16~20年与对照组比较,差异有统计学意义(P<0.01),这部分人应作为重点防治对象。结论洗煤厂煤尘对接触人员的心血管系统有一定影响,接尘人员应做好个人防护,定期进行职业健康检查,用人单位应改善作业环境,保证职业健康检查资料的完整性、连续性。
Objective To understand the change of electrocardiogram (ECG) of coal dust contact in coal washing plant, early detection of ECG changes and prevention of cardiovascular diseases. Methods A total of 294 coal dust contact persons in a coal washing plant were observed, and 280 workers in the plant that did not contact with coal dust were taken as the control group. The results of two groups of electrocardiogram were statistically analyzed. Results The abnormal rate of electrocardiogram was 27.21% in observation group and 10.71% in control group. The abnormal rate of ST-T and sinus bradycardia in observation group was higher than that in control group (P <0.01). Electrocardiogram abnormalities in the observation group except 56 to 60 years of age, other age groups compared with the control group, the difference was statistically significant; abnormal ECG rate in the observation group except for 21 to 25 years and 36 years of dust age , The other dust-exposed working-age groups compared with the control group, the differences were statistically significant; the observation group aged 46 to 50 years old, dust-intensive treatment of 16 to 20 years compared with the control group, the difference was statistically significant (P <0.01) , This part of people should be the focus of prevention and treatment. Conclusion The coal dust in the coal washing plant has a certain impact on the cardiovascular system of the contact personnel. The personnel who take the dust should make personal protection and conduct regular occupational health examination. The employing unit should improve the working environment and ensure the integrity and continuity of the occupational health examination data.