矽尘、煤矽尘和石棉作业工人MTTp对比研究  

A Comparative Study on MTTp in workers Exposed to Silica Coal and Asbestos

作　　者：王绵珍[1] 王晓蓉[1] 王治明[1] 黄桂芳[1] 谭义蓉 朱蓉[1] 

机构地区：[1]华西医科大学劳动卫生教研室,华西医科大学生理教研室,华西医科大学附属职防院肺功能室

出　　处：《职业卫生与病伤》1995年第3期129-131,共3页Occupational Health and Damage

摘　　要：本文采用“简易计算法”对７３６接尘工人、尘肺病人和对照人群的肺气部分平均通过时间（ＭＴＴｐ）进行对比研究，以探讨ＭＴＴｐ在评价接尘工人和尘肺病人通气功能变化中的应用价值．结果表明三组ＦＶＣ、ＦＥＶ１、Ｖ（７５）、Ｖ（５０）和Ｖ（２５）测值从大到小序位为对照组、接尘组、尘肺组，而ＭＴＴｐ测值从小到大序位为对照组、接尘组、尘肺组。接尘组内比较，煤矽尘组的时气流速和ＭＴＴｐ与矽尘肺组、石棉尘组比，均有显著差异（Ｐ＞０．０５）．提示ＭＴＴｐ在评价接尘工人肺通气功能变化中有一定实用价值，尤其是对煤矽尘工人，ＭＴＴｐ指标的应用更有实际意义．Simplifide counting method was used to study the partial mean transit time(MTTp)among 736 workers(exposed to dusts ,pneumjoconiosis patients and control)so as to evalutethe practical value of MTTp in the changes of ventilatory function between dust exposedworkers and pneumoconiosis patients、The results showed that the sequences of FVC, FEV1,V75,V50,and V25 are control group> dust exposed group >pneumoconiniosis patients,utMTTp indicated oppsite sequence i.e. control < dust exposed group < pneumoconiosis pa-tients,Besides, both the expiratorp flow and MTTp showed significant difference at the P <0.05 levels in workers exposed to coal-silica compared with those exposed to silica or as-bestos only. The study indicated that MTTp may be applicable in evaluating the changes ofventilatory function ,especially for workers exposed to coal-silica dusts.

关 键 词：尘肺 MTTp 接尘工人 矽尘 煤矽尘 石棉尘 

分 类 号：R135.2[医药卫生—劳动卫生]