A 41-year-old man is admitted to hospital for an appendectomy. He has long-standing type II diabetes mellitus. Hemoglobin is 10 g/dL, WBCs 7,000/μL, platelets 250,000/μL, creatinine 4.1 mg/dL, BUN 80 mg/dL. Which of the following is the next best step in management?
Blood cultures
Broad-spectrum antibiotics
Hemodialysis
Iron studies
Urinalysis
