Empiric Antibiotic Therapy for Nosocomial Meningitis

Recommended Empiric Regimen

The American College of Physicians recommends vancomycin 15-20 mg/kg IV every 8-12 hours (target serum trough concentrations of 15-20 mg/mL) plus an anti-pseudomonal beta-lactam such as cefepime, ceftazidime, or meropenem for empiric therapy of nosocomial meningitis 1, 2
Cefepime 2g IV every 8 hours is recommended as part of the empiric regimen for nosocomial meningitis 1
Ceftazidime 2g IV every 8 hours is recommended as part of the empiric regimen for nosocomial meningitis 1

Penicillin monotherapy is inappropriate for nosocomial meningitis due to high rates of resistant organisms, according to the Infectious Diseases Society of America 3

For Staphylococcus aureus, the Infectious Diseases Society of Europe recommends Flucloxacillin (for MSSA) or continue vancomycin (for MRSA); consider adding rifampin 4
For Pseudomonas aeruginosa, combination therapy is recommended (carbapenem plus aminoglycoside or fluoroquinolone) by the Clinical Microbiology and Infection society 3

Delaying antibiotic administration is a common pitfall, and therapy should be initiated immediately upon suspicion of nosocomial meningitis, according to the Praxis Medical Insights 1
Using penicillin alone for nosocomial meningitis is inadequate coverage, as stated by the Clinical Microbiology and Infection society 3
Using single-agent therapy for Pseudomonas infections is not recommended by the Clinical Microbiology and Infection society 3
Inadequate dosing that doesn't achieve sufficient CSF penetration is a common pitfall, according to the Praxis Medical Insights 1

Monitoring clinical response (fever, neurological status) is recommended by the Praxis Medical Insights 1
Consider repeat CSF cultures to document sterilization in treatment-resistant cases, as recommended by the Praxis Medical Insights 1
Monitor for drug toxicity, especially with vancomycin (nephrotoxicity) and aminoglycosides, according to the Praxis Medical Insights 1