Predicting risk for death from MRSA bacteremia

Emerg Infect Dis. 2012 Jul;18(7):1072-80. doi: 10.3201/eid1807.101371.

Abstract

Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia is often fatal. To determine predictors of risk for death, we conducted a retrospective cohort study. We examined 699 episodes of MRSA bacteremia involving 603 patients admitted to an academic medical center in New York City during 2002-2007. Data came from chart reviews, hospital databases, and recultured frozen MRSA specimens. Among the 699 episodes, 55 were caused by vancomycin-intermediate resistant S. aureus strains, 55 by heteroresistant vancomycin-intermediate S. aureus strains, and 589 by non-vancomycin-resistant strains; 190 (31.5%) patients died. We used regression risk analysis to quantify the association between clinical correlates and death. We found that older age, residence in a nursing home, severe bacteremia, and organ impairment were independently associated with increased risk for death; consultation with an infectious disease specialist was associated with lower risk for death; and MRSA strain types were not associated with risk for death.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Anti-Bacterial Agents / pharmacology
  • Bacteremia / microbiology
  • Bacteremia / mortality*
  • Cohort Studies
  • Drug Resistance, Bacterial
  • Female
  • Humans
  • Male
  • Methicillin-Resistant Staphylococcus aureus*
  • Microbial Sensitivity Tests
  • Middle Aged
  • New York City
  • Predictive Value of Tests
  • Retrospective Studies
  • Risk Factors
  • Staphylococcal Infections / microbiology
  • Staphylococcal Infections / mortality*
  • Vancomycin / pharmacology

Substances

  • Anti-Bacterial Agents
  • Vancomycin