IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-2-46175 Original Research Paper Prevalence of Left Ventricular Diastolic Dysfunction in Chronic Obstructive Pulmonary Disease-A Cross Sectional Study Dheeraj Bhargav Dr. Dr. Ravikanth Dr. February 2023 12 2 01 02