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某市大气污染较为严重,全市常年平均飘尘浓度达0.69mg/m~3,二氧化硫达0.29mg/m~3,肺心病死亡率达90/10万.年,死亡人数占总死亡数的五分之一。肺心病是慢性闭塞性呼吸道疾病长期进展的最终结果。自从1972年一些学者提出末梢气道疾病是慢性闭塞性呼吸器疾病共有的初期改变以来,人们十分注意研究末梢气道疾患,发现在大气污染的城市末梢气道疾病检出率很高,并且看到儿童时期的上述改变是老年
City air pollution is more serious, the city’s average annual fly ash concentration of 0.69mg / m ~ 3, sulfur dioxide reached 0.29mg / m ~ 3, pulmonary heart disease death rate of 90/10 million. Years, the total number of deaths accounted for five points one. Pulmonary heart disease is the end result of long-term progression of chronic obstructive airway disease. Since 1972, some scholars have suggested that peripheral airway disease is a common initial change in chronic obstructive respiratory disease. People pay great attention to the study of peripheral airway diseases and find that the detection rate of peripheral airway diseases in the air pollution is high. The above change to childhood is old age