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Comparison of pulmonary function among smokers and non-smokers – a retrospective study

Harita P Vyas, Rutvee P Vinchhi, Megha S Sheth, Neeta J Vyas.

Background: Cigarette smoking has extensive effects on respiratory function. Pulmonary function testing is a routine procedure for the assessment and monitoring of respiratory diseases.

Aims & Objectives: To compare the pulmonary function among smokers and non-smokers.

Materials and Methods: 100 subjects, 50 smokers and 50 non-smokers were included in a retrospective study conducted at Municipal corporation hospital by convenience sampling. Pulmonary function test procedure was explained to the subjects. Approximately 5 to 6 times manoeuvres were performed, and out of that, the best reading was taken, for FEV1, FVC and FEV1/ FVC ratio.

Results: In the present study, there was a statistically significant difference in the FEV1 value (p = 0.038) between smokers and non-smokers. While the difference in FVC (p = 0.119) and FEV1/ FVC ratio (p = 0.217) were not found to be statistically significant in both the groups.

Conclusion: The present study shows that the mean FEV1 was significantly lower in smokers. Smoking has a deleterious effect on the health, mainly on pulmonary functions. Hence, the risk of respiratory mortality or morbidity is high with smoking.

Key words: Smokers; Pulmonary Function Test (PFT); Non-Smokers; Respiratory Disease; Spirometer

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