Evaluation of FVC, FEV1, FEV1/FVC (%) and FEF25-75% in Male and Female Rice Mill Workers.
Journal Title: International Journal of Medical Science and Innovative Research (IJMSIR) - Year 2019, Vol 4, Issue 3
Abstract
Fine dust inhalation over a long period of time leads to proliferative and fibrotic changes in the lungs. Rice being used as a staple food for South Indians, thousands of people employed in rice mills for their livelihood. This population is at risk of exposure to fine grain dust released during processing of rice grains. It has a long history of association with respiratory tract diseases and adverse effects on other organs of body such as eyes, nose and skin. Despite of presence of many pollutants released from industries in urban areas still the workers of rice mills are more prone to restrictive type of respiratory disorders. The present study is performed to evaluate the FVC, FEV1, FEV1/FVC (%) and FEF25-75% in males and female workers of rice mill and predict the obstructive and restrictive type of respiratory disorders. A cohort study, 100 rice mill workers non smokers were enrolled for the study from 5 different rice mills around Rangareddy District, Telangana. People with previous histories of respiratory disorder were eliminated from the study.Both males (78) and females (22) from age of 20 to 50 years were considered for study to avoid the bias. Pre shift and post shift spirometry was done for one week. The statistical analysis was done by using Sigma Stat version (5.0), p<0.05, 95% Confidence Interval was considered statically significant with 80% power of the study. Procedure of spirometry was performed before and after the shift and data was collected to evaluate the statistical significance. Post-shift spirometric values in rice mill workers both male and females showed a decrease in FVC, FEV1, FEV1/FVC (%) and FEF 25-75% were statistically significant (p<0.0001, t-test) with pre-shift values. FVC, FEV1, FEV1/FVC (%) and FEF 25-75% recorded in males before shift was 2.8±0.26, 2.49±0.21, 87.92±7.87 and 2.89±0.47 and values after shift was 1.70±0.42, 1.19±0.31, 69.83±8.91 and 1.41± 0.28. FVC, FEV1, FEV1/FVC (%) and FEF 25-75% recorded in females before shift was 2.4±0.21, 1.8±0.14, 75±4.20 and 2.54±0.12 and after shift was 1.50±0.16, 1.4±0.3, 54±3.10 and FEF 25-75% and 2.14± 0.12 after shift. Evaluation FVC, FEV1, FEV1/FVC (%) and FEF 25-75% values of rice mill workers both male and female population showed a decrease in pulmonary function test (PFT) and they may more prone to restrictive disorders and obstructive type respiratory disorders in course of time.
Authors and Affiliations
Dr. Sunitha Narendrula*
Keywords
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