Comparative study of spirometric parameters between active tobacco smokers and tobacco non-smokers

Abstract

Aim of this study is to study effect of smoking on various spirometric parameters like forced vital capacity (FVC) , forced expiratory volume in 1 second (FEV 1) and FEV 1 / FVC ratio in apparently healthy tobacco smokers and non-smokers and to compare the result of both the studies to assess the effects of smoking. The present study was carried out by computerized software of Pulmonary Function Test named 'Spiro Excel' on 50 non-smokers and 50 smokers. Smokers are divided in three gropus. Full series of test take 4 to 5 minutes. Tests were compared in the both smokers and non-smokers group by the 'unpaired t test'. Statistical significance was indicated by 'p' value < 0.05. From the result it is found that actual value of spirometric parameters are significantly lower in all smokers group than non-smokers. Key Words: Effect of smoking, forced vital capacity , forced expiratory flow rate in 1 second, FEV 1 / FVC ratio