Cardio-respiratory function in United States coal workers.

N L Lapp, W K Morgan
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Abstract

Over the past five years the cardio-respiratory function of selected groups of U.S. coal workers has been intensively studied. The subjects studied included approximately 10,000 working miners at mines selected as part of an epidemiological study of the prevalence and progression of coal workers' pneumoconiosis (CWP) as well as selected groups of non-working symptomatic miners. The occupation of coal mining per se is sometimes associated with a mild reduction in ventilatory capacity which is not closely related to radiographic category of simple CWP. Slight abnormalities in gas exchange and lung mechanics appear to be associated with the higher categories of simple CWP which do not appear to affect longevity. Subjects with complicated CWP (massive fibrosis) demonstrate moderate to severe degrees of obstruction, abnormalities of gas exchange and lung mechanics that generally relate to the extent of the massive fibrosis and result in premature disability and death.

美国煤矿工人的心肺功能。
在过去的五年里,我们对一些美国煤矿工人的心肺功能进行了深入研究。研究对象包括大约10,000名在煤矿工作的矿工,作为煤炭工人尘肺病(CWP)患病率和进展的流行病学研究的一部分,以及选定的非工作症状矿工组。采煤本身的职业有时与通风量的轻度减少有关,这与单纯CWP的放射学分类没有密切关系。气体交换和肺力学的轻微异常似乎与较高类别的简单CWP有关,而这似乎不影响寿命。伴有复杂性CWP(巨大纤维化)的受试者表现为中度至重度梗阻、气体交换和肺力学异常,这些异常通常与巨大纤维化的程度有关,并导致过早残疾和死亡。
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