Effect of Smoking on Maximum Voluntary Ventilation

Abstract

Introduction: Cigarette smoking causes illness as its numerous pathophysiologic effects on the various systems of the body. It affects respiratory system and causes various diseases like chronic obstructive pulmonary disease, asthma, lung cancer etc. Material and Method:This study aimed to see the effects of smoking on the Maximum Voluntary Ventilation (MVV). For this study we selected 30 control and 30 cases and divided cases into mild, moderate, heavy smokers according to number of cigarette they were smoking daily. Maximum Voluntary Ventilation was performed by medspiror instrument in a standing posture. Result: We found that difference between predicted value and observed value is increased from mild smokers to heavy smokers in MVV. And the difference of mean value of MVV increases as the degree of smoking increases. Conclusion: It suggests that smoking starts obstructive changes in the respiratory system before the onset of respiratory symptoms. [Ghataliya S NJIRM 2018; 9(1): 138-139]