European Journal of Cardiovascular Medicine

Introduction: Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous lung condition characterized by chronic respiratory symptoms (dyspnoea, cough, sputum production, exacerbations) due to abnormalities of the airways (bronchitis, bronchiolitis) and/or alveoli (emphysema) that cause persistent, often progressive, airflow obstruction. Aim: To study RCI as a marker for severity of COPD. Material and Methods: An observational study was conducted in Department of Pulmonary Medicine, K. N. Chest hospital, after approval from institution ethical committee, Dr. S. N. Medical College, Jodhpur. Result: In our study, 58 (58.0%) patients were Cigarettes, 36 (36.0%) patients were Ex-smoker and 6 (6.0%) patients were Non-Smoker. Conclusion: We conclude that, majority numbers of patients were Cigarettes in Stage 1 compared to Stage 2, Stage 3 and Stage 4 though it was not statistically significant.