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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
Summary
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.
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.
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