Given the patient's condition of sepsis and current medication regimen, why is the combination of piperacillin-tazobactam and vancomycin appropriate for this patient?
Vancomycin is used to manage the patient's prediabetes condition by reducing inflammation. This combination provides broad-spectrum coverage against both Gram-positive and Gram-negative bacteria, which is essential in treating sepsis. Piperacillin-tazobactam is specifically used to treat anemia, which the patient also has. Diphenhydramine is included to counteract the sedative effects of vancomycin.