Management of Presumed Sepsis in Neonates
Classification and Initial Assessment
- Neonatal sepsis is classified as early-onset (≤72 hours of life) or late-onset (>72 hours to 28 days), which guides empiric antibiotic selection 1, 2, 4
- All newborns with signs suggestive of sepsis require immediate blood culture collection followed by prompt initiation of empirical antibiotics without waiting for results 4
- For well-appearing newborns born to mothers with chorioamnionitis, a "limited evaluation" including complete blood count with differential and blood culture is recommended before starting antibiotics 4
First-Line Empirical Antibiotic Therapy
- The American Academy of Pediatrics recommends ampicillin plus gentamicin as the first-line empirical antibiotic therapy for neonates with presumed sepsis, providing optimal coverage against common pathogens while minimizing risks of antimicrobial resistance and mortality 1, 2
- This combination provides coverage against Group B Streptococcus, Enterobacteriaceae (especially E. coli), and Listeria monocytogenes 4
- Benzylpenicillin (penicillin G) may be substituted for ampicillin with equivalent efficacy 2
Second-Line and Alternative Regimens
- If gram-negative sepsis is suspected or confirmed, cefotaxime may replace gentamicin 2
- Consider adding vancomycin if coagulase-negative staphylococci are suspected, particularly in hospitalized or NICU patients 2, 5
Special Considerations
- In regions with high antimicrobial resistance, local resistance patterns should guide empiric therapy 6, 7