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Related Experiment Videos

Multiple nosocomial infections. An incidence study.

R L Brawley1, D J Weber, G P Samsa

  • 1Department of Epidemiology, School of Public Health, University of North Carolina, Chapel Hill.

American Journal of Epidemiology
|October 1, 1989
PubMed
Summary

Preventing initial nosocomial infections is crucial, as patients developing multiple infections face significantly longer hospital stays. Identifying risk factors can target interventions to high-risk patients who account for over half of all hospital-acquired infections.

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Area of Science:

  • Infectious Diseases
  • Hospital Epidemiology
  • Public Health

Background:

  • Nosocomial infections (NIs) represent a significant burden on healthcare systems.
  • Understanding the patterns and impact of multiple NIs is essential for effective infection control.

Purpose of the Study:

  • To analyze the incidence, characteristics, and impact of nosocomial infections, particularly multiple infections, in a large hospital cohort.
  • To identify patient subpopulations at higher risk for developing multiple NIs.

Main Methods:

  • Prospective surveillance of a five-year admission cohort (1980-1984) at North Carolina Memorial Hospital.
  • Data collection on patient admissions, nosocomial infection development, and hospital stay duration.
  • Statistical analysis to compare outcomes between infected and non-infected, and once-infected versus multiply-infected patients.

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Main Results:

  • Over 102,000 patients were monitored, with 2.6% developing at least one NI.
  • 29.1% of infected patients acquired two or more NIs, and 39.2% of those acquired three or more.
  • Multiply-infected patients experienced significantly prolonged hospital stays (57.9 days) compared to once-infected patients (30.0 days).
  • 53% of total NIs were multiple infections, with bacteremias and respiratory infections being common in multiply-infected patients.
  • Surgical and intensive care unit (ICU) patients had a higher burden of multiple NIs, with 71% of ICU NIs being multiple infections.
  • The probability of developing multiple infections increased 11-fold after the first infection.

Conclusions:

  • Initial prevention of nosocomial infections is paramount.
  • Identifying risk factors for multiple NIs can focus infection control efforts on a high-risk subpopulation.
  • Targeted interventions for high-risk patients could reduce the overall incidence and impact of nosocomial infections, leading to shorter hospital stays and reduced costs.