Morgan W K, Donner A, Higgins I T, Pearson M G, Rawlings W
Department of Medicine, University of Western Ontario, London, Canada.
Am Rev Respir Dis. 1988 Oct;138(4):813-20. doi: 10.1164/ajrccm/138.4.813.
We studied the prevalence of ventilatory impairment, chest symptoms, and radiographic abnormality in a selected sample of more than 2,000 kaolin workers from east central Georgia. The presence of ventilatory impairment was related to the presence of complicated pneumoconiosis, employment in clay calcining, and cigarette smoking. In those working with calcined clay, there was an increased prevalence of abnormality of the FEV1, but not the FVC, when compared to both wet and dry processors and which could not be explained by either cigarette smoking or the presence of pneumoconiosis. The magnitude of abnormality in the calcined clay workers was, however, unlikely to lead to disabling impairment. In workers with more than 3-yr tenure, there were 90 subjects with simple pneumoconiosis and 18 with complicated pneumoconiosis, yielding an adjusted prevalence of 3.2% and 0.63%, respectively, in the sample examined. Dry processing was associated with a greater risk of developing pneumoconiosis than wet processing.
我们对来自佐治亚州中东部的2000多名高岭土工人的选定样本进行了通气功能障碍、胸部症状和影像学异常患病率的研究。通气功能障碍的存在与复杂性尘肺病的存在、粘土煅烧工作以及吸烟有关。与湿法和干法加工工人相比，煅烧粘土工人中FEV1异常的患病率增加，但FVC异常患病率未增加，且这无法用吸烟或尘肺病的存在来解释。然而，煅烧粘土工人的异常程度不太可能导致致残性损伤。在工作年限超过3年的工人中，有90名患有单纯性尘肺病，18名患有复杂性尘肺病，在所检查的样本中，校正患病率分别为3.2%和0.63%。干法加工比湿法加工患尘肺病的风险更大。
