Respiratory Trials·org

Infection control · Preventing catheter infection

Keystone ICU before-and-after study

An intervention to decrease catheter-related bloodstream infections in the ICU

Keystone ICU trial design and results
Design Prospective cohort study with a collaborative quality-improvement intervention
Treatment Five-element evidence-based catheter insertion and maintenance bundle
Control Baseline period before the intervention
Population 103 intensive care units contributing 1981 ICU-months and 375,757 catheter-days
Follow-up 18 months
Primary endpoint Rate of catheter-related bloodstream infection per 1000 catheter-days
Result The intervention produced a large and sustained reduction of up to 66% in catheter-related bloodstream infection rates, maintained throughout the 18-month study period.
Secondary endpoints Sustainability of the effect over time

An evidence-based intervention resulted in a large and sustained reduction (up to 66%) in rates of catheter-related bloodstream infection that was maintained throughout the 18-month study period.

The trial authors, in the published abstract

How it has aged

The founding document of the ICU quality-improvement movement, and the reason catheter insertion checklists exist. It is a before-and-after study rather than a randomised trial, so secular trends cannot be excluded — but the effect size and durability have persuaded almost everyone.

Publications

An intervention to decrease catheter-related bloodstream infections in the ICU

Pronovost P, Needham D, Berenholtz S, et al. An intervention to decrease catheter-related bloodstream infections in the ICU. N Engl J Med 2006 Dec 28;355(26):2725-32.

  • Up to 66% reduction in catheter-related bloodstream infection
  • Effect sustained over 18 months
  • Uncontrolled before-and-after design