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尘肺(pneumoconiosis)是在生产过程中长期吸入粉尘发生的以肺组织纤维化为主的疾病。它是一个古老的疾病,我国在公元10世纪即北宋时代就有粉尘致病的记载。矽肺是尘肺中最多见的一种,是由于长期吸入游离二氧化硅含量较高粉尘引起的,是尘肺中危害最严重的一种。矽肺发病一般比较缓慢,接触较低浓度矽尘多在15?20年后发病。但发病后即使脱离粉尘作业,病变仍可继续发展。少数人由于持续吸入高浓度、高游离二氧化硅含量的粉尘,经1?2年后即可发病,
Pneumoconiosis is a disease in which long-term inhalation of dust occurs in the course of production, mainly involving pulmonary fibrosis. It is an ancient disease. In our country, there was a record of dust disease in the 10th century AD, that is, the Northern Song Dynasty. Silicosis is the most common form of pneumoconiosis, due to the long-term inhalation of free silica content of dust caused, is the most serious one in the pneumoconiosis. The incidence of silicosis is generally slow, more exposure to lower concentrations of silica dust onset in 15 to 20 years. However, even after the onset of dust from the operation, the disease can continue to develop. A small number of people due to continuous inhalation of high concentrations of high silica content of dust, after 1 to 2 years after the onset,