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目的研究煤焦化企业机焦作业工人血压和心电图改变。方法某焦化企业机焦作业工人367人为观察组,某厂不接触影响循环系统有害因素的工人505人为对照组,进行对照研究。结果在工作场所空气中存在的主要职业病危害因素CO、SO2等低于国家容许浓度标准的情况下,观察组与对照组高血压检出率分别为4.1%和1.2%,差异有统计学意义(P<0.01)。心电图检出率分别为43.0%和27.5%,2组间差异有统计学意义(P<0.01);观察组心电图改变以窦性心律不齐和低电为主;工龄段比较,除1～5 a工龄段外,其他各工龄段心电图异常率差异皆有统计学意义;年龄段比较,除25岁以下年龄段外,其他各年龄段电图异常率与对照组相比,差异皆有统计学意义。结论煤焦化企业机焦作业工人血压和心电图异常率较高,为远期效应。
Objective To study the changes of blood pressure and electrocardiogram of workers working in coke from coal coking enterprises. Methods 367 workers working in a coking enterprise were selected as observation group and 505 workers who did not contact with the harmful factors affecting the circulatory system as the control group. Results The prevalence rates of CO and SO2 in the air of the workplace were lower than those of the national standard. The prevalences of hypertension in the observation group and the control group were 4.1% and 1.2% respectively, with statistical significance ( P <0.01). The detection rate of electrocardiogram was 43.0% and 27.5%, respectively, with significant difference between the two groups (P <0.01). The electrocardiogram changes in the observation group were mainly sinus arrhythmia and low electricity. a years of age, the other ECG abnormalities of different ages were statistically significant differences; age groups, except for the age group of 25 years of age, other age groups, abnormalities of electrocardiogram compared with the control group, the difference was statistically significance. Conclusion The abnormal rate of blood pressure and electrocardiogram of workers working in coke coking enterprises is high, which is a long-term effect.