Chronic Obstructive Lung Disease

Many lung diseases have an element of obstruction to air flow leaving the lungs and they are grouped into the general category of “obstructive lung disease.” Chronic bronchitis, emphysema and asthma are the three main forms of obstructive lung disease. Of these, only asthma is reversible. The damage that leads to chronic bronchitis and emphysema is permanent; the progression of these diseases,…