论文部分内容阅读
对１５５０名铸造接尘工人及７３８名对照工人进行了肺功能测定与呼吸系统症状的询问调查。结果表明：接尘组工人的咳嗽、咯痰、胸闷、胸痛、气短等呼吸系统症状阳性率明显高于对照组；肺功能ＦＶＣ、ＦＥＶ＿１、ＦＥＦ＿（２５－７５％）、Ｖ＿（７５）、Ｖ＿（５０）的实测值占预计伍百分比的下降，异常率的增高，与对照组相比，多具有显著的差别；接尘组工人肺功能异常率随接尘工龄延长而递增。多因素分析表明，接尘工龄，吸烟年限是影响肺功能下降的主要因素。
Investigation of pulmonary function tests and respiratory symptoms was conducted on 1550 casting workers and 738 control workers. The results showed that the positive rates of respiratory symptoms such as cough, expectoration, chest tightness, chest pain, shortness of breath and so on were significantly higher in workers exposed to dust than those in the control group. The pulmonary function FVC, FEV_1, FEF 25-75%, V 75, (50) of the measured value accounted for the expected percentage of the decline in the percentage of Wu Wu, abnormal rate increases, compared with the control group, and more with significant differences; dust exposure workers lung function abnormal rate increases with the extended service life extension. Multivariate analysis showed that the main factors affecting the decline of pulmonary function were the length of service and smoking duration.