By Carrie Westlake, BSRT, RRT
Chronic Obstructive Pulmonary Disease, or COPD, includes several progressive lung diseases including emphysema, chronic bronchitis, refractory (non-reversible) asthma and some forms of bronchiectasis. Many who have the disease do not realize it, and as a result they do not seek treatment when the disease at its earliest stages and most treatable.