Analysis of Pulmonary Function Test on various categories of BMI

Lavanya, A V (2019) Analysis of Pulmonary Function Test on various categories of BMI. Masters thesis, Trichy SRM Medical College Hospital & Research Centre, Trichy.


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INTRODUCTION: Overweight and obesity are major health problem in the developed and developing countries. According to National Family Health Survey data, 12.1% males & 16% females of Indian population are obese / overweight1. It is mainly due to an imbalance between calorie consumed & calorie expended. The influence of obesity on pulmonary function tests has been examined but the role of body fat distribution has received limited attention. Several studies have mentioned about the pulmonary functions test in obesity. Only fewer PFT studies were done in underweight & there are very few comparative studies of PFT including all 3 categories of BMI. So the present study analyzed the change in pulmonary functions in the 3 categories of BMI- normal, underweight & overweight. AIMS AND OBJECTIVES: 1. To categories the subjects according to BMI. 2. To evaluate pulmonary function test in each subjects. 3. To correlate the effects of pulmonary functions with various categories of BMI. MATERIALS AND METHODOLOGY: A Cross sectional study was conducted in 111 male medical subjects at TSRMMCH & RC, Trichy over a period of 2 years in the Department of Physiology. The subjects were categorized into 3 groups according to BMI (37 in each group – underweight, normal & overweight). Lung volumes were measured using a Computerized Spiro meter “COSMED”. The parameters used to assess the pulmonary functions were FVC, FEV1, FEV1/FVC, PEF, MVV, ERV, and MEP & MIP. Statistical analysis was done using SPSS Software version 21. ANOVA test & Pearson’s Correlation test was used to analyze and to correlate relationship between BMI and pulmonary functions. RESULTS: The result showed a statistically significant (p<0.05) decrease in pulmonary functions particular FEV1 and ERV. FEV1 is significantly reduced in underweight than overweight group. ERV is decreased in both underweight and overweight group when compared to normal group. CONCLUSION: Our study concluded that static lung function (ERV) is altered in overweight group and underweight group. It showed a restrictive type of lung dysfunction. Dynamic lung function (FEV1) is reduced in underweight group showing a obstructive type of respiratory dysfunction. Thus it is concluded that the body mass index must be within normal limits for optimal lung functions.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Body Mass Index (BMI), Pulmonary function test, FEV1, FEV1/FVC, PEF, MVV, ERV, MEP & MIP, Overweight, Underweight.
Subjects: MEDICAL > Physiology
Depositing User: Subramani R
Date Deposited: 23 Aug 2019 01:42
Last Modified: 23 Aug 2019 01:43

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