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由于生产性粉尘的长期刺激作用,可使肺部受到各种不同的病理损害。特别是肺组织纤维化的改变,可以产生继发性肺动脉高压,使右心受累,最后导致慢性肺原性心脏病。因此在粉尘作业工人尚未发生尘肺之前,了解其心电图的变化,积累心电图资料,对防治尘肺、保护工人健康更有其现实意义。我们于1975年10～11月对接触电焊烟尘矽尘作业的168名工人进行了心电图检查,发现有心电图改变者43名占25.5％,今将结果分析如下:
Due to the long-term stimulation of productive dust, the lungs can be subject to a variety of pathological lesions. In particular, changes in lung tissue fibrosis, can produce secondary pulmonary hypertension, right heart involvement, and eventually lead to chronic pulmonary heart disease. Therefore, before the pneumoconiosis workers have been exposed to pneumoconiosis, it is of practical significance to understand the changes of their electrocardiograms and accumulate ECG data. This is of great practical significance for the prevention and control of pneumoconiosis and the protection of workers’ health. We conducted an electrocardiogram (ECG) examination of 168 workers who came in contact with welding fumes and dust from October to November 1975. We found that there were 43 persons with electrocardiographic changes accounting for 25.5%. The results are as follows: