THỰC TRẠNG TỔNG DUNG TÍCH PHỔI (TLC) Ở NGƯỜI TIẾP XÚC TRỰC TIẾP BỤI SILIC TRONG MÔI TRƯỜNG LÀM VIỆC VÀ YẾU TỐ LIÊN QUAN

Abstract

This descriptive study aims to examine the changes in total lung capacity of workers who are directly exposed to silica in the workplace and related factors. Before measuring the respiratory function and total lung capacity (TLC), 869 workers in the environment exposed to silica dust had taken chest x-rays to diagnose silicosis. The results show that: TLC reduction rate is 10.5% (91/869); there is a close relationship between having large cloud silicosis with TLC decline (p<0.001); no association between small nodular silicosis and TLC decline (p>0.05); There is a close relationship between the FVC reduction and TLC reduction (p<0.001). It is recommended to continue to use common techniques and indicators of respiratory function such as FVC to assess limited respiratory function decline, in case high accuracy is required, the high technical index TLC should be used.