Understanding and Preventing Exacerbations in COPD

James F. Donohue, MD; Fernando J. Martinez, MD; Peter L. Salgo, MD; Frank C. Sciurba, MD, FCCP; and Byron Thomashow, MD, provide insight on the prevalence of exacerbations in chronic obstructive pulmonary disease, how to identify at-risk patients, and what the best preventative measures are.