Comparison of Pulmonary Function Tests in Smokers and Non-Smokers

Abstract

Purpose of Study: To compare the lung function tests in healthy non-smoker with age and sex matched smokers 
who are asymptomatic of respiratory impairment.  
Materials and methods: This cross sectional analytic study was carried out from June 2009 to November 2009 in 
Department of Medicine and Pulmonology, Jinnah Hospital, Lahore. A total of 200 subjects were included in the 
study. All individuals were selected from healthy general public visiting Jinnah hospital Lahore as attendants of the 
patients.FVC, FEV1 and FEV1/FVC were measured and recorded in Performa. Data was entered and analyzed in 
SPSS 10. 
Results: Mean age was 36.77+6.58 years. It was 34.11+7.38 in smokers and 33.43+5.39 in non-smokers group. 
Mean FEV1 was 2.55+0.79 in smokers and 3.52+0.55 in non-smokers.  Mean FVC was 3.94+0.69 in smokers and 
4.35+0.69 in non-smokes. 
Conclusion: Smoking causes significant reduction in lung functions in asymptomatic smokers which can be 
prevented by quitting smoking.