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The Emergency Severity Index (version 3) 5-level triage system scores predict ED resource consumption.

Paula Tanabe1, Rick Gimbel, Paul R Yarnold

  • 1Institute for Health Services and Policy, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA.

Journal of Emergency Nursing
|February 7, 2004
PubMed
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The Emergency Severity Index (ESI) version 3 accurately predicts emergency department (ED) resource use. However, ESI triage level did not predict hospital length of stay in this study.

Area of Science:

  • Emergency Medicine
  • Healthcare Management
  • Triage Systems

Background:

  • The Emergency Severity Index (ESI) is a popular 5-level triage tool.
  • ESI version 3 includes resource consumption prediction.
  • Validation of ESI version 3 in clinical settings is ongoing.

Purpose of the Study:

  • To validate the Emergency Severity Index (ESI) version 3 triage algorithm.
  • To assess ESI's prediction of actual resource consumption.
  • To evaluate ESI's prediction of emergency department (ED) and hospital length of stay.

Main Methods:

  • Retrospective, descriptive study of 403 ED patients.
  • Data abstracted from ED records included resource use and length of stay.
  • Relationship between ESI level and outcomes was analyzed.

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Main Results:

  • Mean resource use decreased as ESI level increased (Level 1: 5, Level 5: 0.2).
  • ED length of stay varied by ESI level (Level 1: 195 min, Level 5: 98 min).
  • ESI triage level did not predict hospital length of stay.

Conclusions:

  • The ESI algorithm accurately predicts ED resource intensity.
  • ESI allows benchmarking of ED length of stay by triage acuity.
  • ESI's utility in predicting hospital length of stay requires further investigation.