SPIROMETRIC EVALUATION OF LUNG FUNCTION OF COAL WORKERS WORKING AT MACH (BOLAN DISTRICT)

To evaluate the coal dust effect on lung function among coal workers and non-coal workers. This was case-control study. The 144 male coal workers and non-coal workers, 20-50 years more than one year of working skill were selected. Study was carried out in the Mach, Bolan district in Balochistan, Pakistan. The Spirometer and selfdesigned survey form were used. The interview was accompanied and information was documented in the survey form and Spirometry was done for coal workers and non-coal workers separately. The statistical measurements and (p<0.05) were detected for coal workers and non-coal workers via SPSS 22. The mean value of FVC in coal workers was (56.81%) and in non-coal workers was (64.84%). The FEV1 in the coal workers was (62.60%) and in non-coal workers was (73.09%). The PEFR was (71.89%) in coal workers but in non-coal workers was (84.61%). The FEV1/FVC ratio was (112.95%) in coal workers and in non-coal workers the mean value was (113.87%). The FEF25-75% in coal workers was (92.34%) and in non-coal workers was (97.57%). Research was resulted that no significant change initiate among coal workers and non-coal workers. The mean value of PEFR, FVC and FEV1 were clearly decreased in coal workers than non-coal workers which should be noticed and if it decreased to 50% or lesser should be hospitalized in time. Keywords: Lung Function, Coal workers, Spirometry, Mach, Balochistan, Pakistan.