A 67-year-old woman with hypertension and type 2 diabetes pr…
A 67-year-old woman with hypertension and type 2 diabetes presents with 10 days of cough and increasing fatigue. She denies sputum production. Vital signs: T 100.0°F, HR 104, RR 20, BP 112/64, SpO2 94%. Lung exam reveals faint crackles at the right base that do not clear with coughing. She appears mildly ill but is alert. Which is the most appropriate next step?