A 58-year-old male develops a new cough, fever (102.5°F), and leukocytosis on his fifth day of hospitalization following abdominal surgery. A chest X-ray shows new infiltrates. He has no known drug allergies. What is the most appropriate empiric antibiotic regimen for suspected hospital-acquired pneumonia (HAP)?

The correct answer to the question "A 58-year-old male develops a new cough, fever (102.5°F), and leukocytosis on his fifth day of hospitalization following abdominal surgery. A chest X-ray shows new infiltrates. He has no known drug allergies. What is the most appropriate empiric antibiotic regimen for suspected hospital-acquired pneumonia (HAP)?" is Option B: Piperacillin-tazobactam and vancomycin..

The other options — A) Azithromycin and ceftriaxone., C) Levofloxacin monotherapy., D) Cefepime and metronidazole. — are incorrect for this USMLE Exam Prep question. As explained above: For hospital-acquired pneumonia, empiric therapy should cover common resistant pathogens like Pseudomonas aeruginosa and MRSA. Piperacillin-tazobactam provides broad-spectrum Gram-negative coverage, …