What is the normal course for copd?

Progressive... Copd, chronic obstructive pulmonary disorder, is a slowly progressive, incurable disease. It is treatable, however. Smoking cessation is essential to slow disease progression and lessen symptoms. See your doctor for diagnosis and treatment.
COPD. COPD can take various forms, including chronic bronchitis, emphysema, and others. Different treatments for different situations & symptoms can improve breathing and comfort. If patient smokes, quitting now will reduce symptoms and slow progression of the disease. Avoid exposure to fumes, infection. See http://www.Nhlbi.Nih.Gov/health/health-topics/topics/copd/ for more information.