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Mortality and neurodevelopmental outcome after Staphylococcus aureus bacteremia in infants

Michael Cohen-Wolkowiez1, Daniel K Benjamin, Vance G Fowler

  • 1Department of Pediatrics, Duke University, Durham, NC, USA.

The Pediatric Infectious Disease Journal
|November 29, 2007
PubMed

Insights

Methicillin-resistant Staphylococcus aureus bacteremia in infants lasted longer than methicillin-sensitive S. aureus bacteremia. However, outcomes like hospital stay, mortality, and neurodevelopmental impairment were similar between the two groups.

Area of Science:

  • Neonatal Medicine
  • Infectious Diseases
  • Pediatric Bacteriology

Background:

  • Staphylococcus aureus is a common cause of bacteremia in infants.
  • Methicillin-resistant Staphylococcus aureus (MRSA) poses a growing challenge in healthcare settings.
  • Understanding the clinical impact of MRSA versus methicillin-sensitive S. aureus (MSSA) bacteremia in neonates is crucial for effective management.

Purpose of the Study:

  • To compare clinical outcomes in infants diagnosed with methicillin-resistant Staphylococcus aureus (MRSA) bacteremia versus methicillin-sensitive Staphylococcus aureus (MSSA) bacteremia.
  • To identify potential differences in disease duration, hospitalization, mortality, and neurodevelopmental outcomes between MRSA and MSSA infections in neonates.

Main Methods:

  • Retrospective cohort study comparing infants with S. aureus bacteremia.
  • Data collected on duration of bacteremia, length of hospital stay, mortality rates, and neurodevelopmental assessments.
  • Statistical analysis to compare outcomes between MRSA and MSSA infected infants.

Main Results:

  • Infants with MRSA bacteremia experienced a significantly longer median duration of bacteremia (4.5 days) compared to those with MSSA bacteremia (1 day) (P = 0.01).
  • No statistically significant differences were observed in the length of hospital stay between the two groups.
  • Mortality rates and rates of neurodevelopmental impairment were comparable between infants with MRSA and MSSA bacteremia.

Conclusions:

  • While MRSA bacteremia in infants is associated with a prolonged duration of bloodstream infection, it does not appear to increase the risk of mortality or long-term neurodevelopmental deficits compared to MSSA bacteremia.
  • These findings suggest that current treatment strategies may be effective in mitigating severe outcomes despite differences in pathogen resistance.
  • Further research may explore optimal treatment durations and long-term follow-up for infants with MRSA bacteremia.

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