A study of FEV1 in relation to body mass index among smokers
Journal Title: Medpulse International Journal of Physiology - Year 2017, Vol 4, Issue 1
Abstract
Background: FEV1 is the most specific and dependable measure of airway obstruction. Because of the reliability and simplicity of equipment needed to measure FEVI this parameter is used most frequently to measure bronchial hyper-responsiveness. Reduction in FEVI reflect the total effects of reduction in TLC, obstruction of airway, loss of lung recoil and relatively uncommon gross weakness of respiratory muscles. Methodology: First, case history is taken with special emphasis on personal habits. Then secondly the physical examination including the measurement of height and weight. All the tests are done at the same time of the day to avoid possible diurnal variation. Subject is allowed to sit comfortably on the stool. Instructions are given about the tests. A very enthusiastic demonstration by the operator is required. So that a maximum effort is made by the subject when carrying out the forced expiratory test. Subjects who has not previously examined on spirometry should have two or more practice attempts until it appears that maximum effort is being obtained. Results: In smokers, the smokers with normal weight the mean are 54.85 and the standard deviation is 26.42. In smokers with overweight the mean is 51.94 and the standard deviation is 22.47. When this values are tested using chi-square test, it is found that there is significant difference, according to the chi-square test the P value is less than 0.05 Conclusion: The effect of smoking on FEV1 is more affected in overweight group of subjects than the normal weight group of subjects.
Authors and Affiliations
L K Sudeer Kumar
Keywords
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