system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 61-year-old woman comes to the physician because of a 6-day history of cough, shortness of breath, and fever. She also reports that she has had 4 episodes of watery diarrhea per day for the last 3 days. She has chronic bronchitis. She has smoked one pack of cigarettes daily for the past 30 years. Her temperature is 39°C (102.2°F) and pulse is 65/min. Examination shows diffuse crackles over the left lower lung field. Laboratory studies show:
Hemoglobin 13.8 g/dL
Leukocyte count 16,000/mm3
Platelet count 150,000/mm3
Serum
Na+ 131 mEq/L
Cl- 102 mEq/L
K+ 4.7 mEq/L
An x-ray of the chest shows consolidation of the left lower lobe. A Gram stain of induced sputum shows numerous neutrophils but no organisms. Which of the following is the most appropriate pharmacotherapy?"
assistant
Levofloxacin