RT Book, Section A1 Dalley, Michael T. A1 Ciment, Ari A2 Farcy, David A. A2 Chiu, William C. A2 Marshall, John P. A2 Osborn, Tiffany M. SR Print(0) ID 1135700322 T1 Severe Asthma and COPD T2 Critical Care Emergency Medicine, 2e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071838764 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1135700322 RD 2024/04/18 AB Obstructive airway disease is the most common chronic pulmonary pathology encountered in emergency medicine. Its most common etiology, asthma, is characterized by bronchoconstriction and airway hyper-responsiveness to certain stimuli. These stimuli trigger inflammatory mediators that lead to airway inflammation, mucosal edema, and, ultimately, reversible bronchospasm.1