Chronic Obstructive Pulmonary Disease (COPD)

cop4dEnd stage chronic obstructive pulmonary disease (COPD), also referred to as stage 4 COPD, is the most severe stage of the condition. It can cause symptoms such asThe main types of COPD are emphysema and chronic bronchitis. They differ in the damage they do to the airways and lungs. However, the causes, symptoms, and treatment of