Mr. W is an 83-year-old man who was brought to the hospital from a long-term care facility by emergency medical services after reporting severe dyspnoea and shortness of breath. He has been experiencing coldlike symptoms for the past 2 days. He has a productive cough with thick yellowish sputum. When Mr. W awoke in the nursing home, it was found that he was having difficulty breathing even after using his albuterol metered-dose inhaler (MDI). He appears very anxious and is in respiratory di...