This reference compiles the most current technical and biological data available to survey the state-of-science in the care and management of patients with bronchopulmonary dysplasia, COPD, and other forms of lung disease-tracking the initiation and progression of processes that cause airway obstruction, the biologic and physiological abnormalities that characterize COPD, and the potential reversibility of the inflammatory response in COPD for improved patient diagnosis and treatment.