两个矿区煤矿尘肺合并慢性支气管炎的调查分析

INVESTIGATION AND ANALYSIS ON COAL MINEPNEUMOCONIOSIS WITH CHRONIC BRONCHITISOF TWO COAL MINES

对两个煤矿的煤矿尘肺合并慢性支气管炎进行调查，频率为２６．１％和５５．３％，无尘肺０￣＋组合并率为１７．６％和２６．９％。煤矿尘肺合并慢性支气管炎是普通人群患慢性支气管炎的２．０和４．２６倍。尸检煤矿尘肺合并慢支气管炎的频率高，Ｐ＜０．０５．煤种、粉尘游离ＳｉＯ＿２含量、煤灰分的化学成分不同，可导致合并频率不同。频率高低还与尘肺期别、吸烟、结核、年龄呈现正相关。

oal mine pneumoconiosis (CMP) with chronic bronchitis of two coal mines is investigatedand analysed, the complicated ratio of which is 26. 1% and 55. 3%, the complicated ratio of thegroup of non-pneumoconiosis O+ (NCMPO+ ) is 17. 6 $ and 26. 9$. CMP with chronic brochitisis checked by the pathologic anatomy menthod at gg.1%. The ratio of CMP with chronic bron-chitis is higher than non-pneumoconiosis O+ ,P<0. 05. Coal type and the percentage of dust dis-sociation SiO2 and the chemical composition of coal ash are all different, which maylead to thedifferent complicated ratio. The ratio is high or low which is also positive relation with pneumo-coniosis step and smoking and tuberculosis and ages.