Chronic Obstructive Pulmonary Disease among Patients Visiting the Emergency Department of a Tertiary Care Centre: A Descriptive Cross- sectional Study.

Introduction: Chronic obstructive pulmonary disease is characterised by persistent airflow limitation which is usually progressive and is the primary global cause of morbidity and mortality. It is the third leading cause of Years Lived with Disability, the second most common cause of death after ischemic heart disease, and the fourth most common cause of premature death. The aim of this study was to find out the prevalence of chronic obstructive pulmonary disease among patients visiting the emergency department of a tertiary care centre.