Pulmonary Infections Practice Test

A 72-year-old man with a history of COPD, type 2 diabetes mellitus, and coronary artery disease is brought to the emergency department with a 3-day history of worsening shortness of breath, productive cough, and fever. His temperature is 38.9°C (102.0°F), blood pressure is 105/65 mm Hg, heart rate is 115/min, and respiratory rate is 28/min. His oxygen saturation is 89% on room air. A chest x-ray reveals a left lower lobe infiltrate. He is admitted to the general medical ward.

A 65-year-old man presents with a 5-day history of fever, cough, and shortness of breath. He also reports headache, myalgias, and watery diarrhea. His medical history is notable for smoking. He recently returned from a convention where he stayed in a large hotel. Laboratory studies show a sodium level of 128 mEq/L. A chest x-ray shows patchy, unilateral lower lobe infiltrates.