Nusrath Jahan Chowdhury1, Mohammed Zahid Hossain2, S.A.H.M Mesbahul Islam3,
Muhammad Arif-un Nabi4, Chowdhury Rifat Jahan5, Mahmuda Sultana6
Muhammad Arif-un Nabi4, Chowdhury Rifat Jahan5, Mahmuda Sultana6
1. Assistant Professor, Department of Physiology, Parkview Medical College, Sylhet.
2. Associate Professor and Head, Department of Physiology, Sylhet MAG Osmani Medical College, Sylhet.
3. Associate Professor, Department Respiratory Medicine, Sylhet MAG Osmani Medical College, Sylhet
4. Lecturer, Department of Microbiology, Sylhet MAG Osmani Medical College, Sylhet
5. Associate Professor and Head, Department of Physiology, Parkview Medical College, Sylhet
6. Assistant Professor, Department of Anatomy, Parkview Medical College, Sylhet
Abstract
Smoking of tobacco directly affects the respiratory system by causing a number of respiratory diseases. In case of asymptomatic smokers, impairment of lung function parameters (FVC, FEVI, FEV1/FVC) are the initial indicators for appearance of any lung disease. To observe the effects of smoking on pulmonary functions in apparently healthy asymptomatic tobacco smokers through measuring FVC, FEV1 and FEV1/FVC were by digital spirometer. This cross sectional observational study conducted in the department of Physiology, Sylhet MAG Osmani Medical College in collaboration with department of Medicine, Sylhet MAG Osmani Medical College Hospital from July 2016 to June 2017. A total of 200 subjects were selected by convenient sampling. Among them 100 were asymptomatic smokers and 100 were age, sex and BMI matched healthy never smokers as control. Their pulmonary functions were studied by measuring FVC, FEVI and FEV1/FVC. For statistical analysis unpaired ‘t’ test was performed. There was no significant difference of mean predicted values of lung function parameters between two groups. The mean measured value and percentage of predicted value of FVC, FEVI and FEV1/FVC were significantly (p<0.001) lower in asymptomatic smokers than the control group. It may be concluded that lung function parameters were impaired though smokers may apparently remain asymptomatic.
Key Words: Pulmonary function test, Tobaco smoker.