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Aligning ambulance dispatch priority to patient acuity: A methodology.

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Summary
This summary is machine-generated.

Emergency Medical Service (EMS) call prioritization was refined using data analysis. This study improved response alignment with patient needs, potentially reducing lights-siren responses and improving critical care times.

Keywords:
emergency medical dispatchemergency medical servicesmethodspatient acuitytriage

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Area of Science:

  • Emergency Medicine
  • Health Services Research
  • Data Science in Healthcare

Background:

  • Rising Emergency Medical Service (EMS) demand in Victoria, Australia, has increased by nearly 5% annually.
  • Over 55% of cases receive Code 1 (lights/sirens) responses, potentially impacting response times for critical patients.
  • The Medical Priority Dispatch System (MPDS) is known for high sensitivity and frequent over-triage.

Purpose of the Study:

  • To develop and describe a methodology for aligning EMS response allocation with patient acuity.
  • To re-evaluate Medical Priority Dispatch System (MPDS) determinant codes for optimized emergency response.
  • To improve the efficiency and effectiveness of emergency medical responses.

Main Methods:

  • Extracted and analyzed Ambulance Victoria data from October 2013 to August 2014.
  • Employed epidemiological profiling and expert panel review to re-categorize MPDS determinant codes.
  • Assessed the impact of re-categorization on response priorities and triage levels.

Main Results:

  • Identified 105 MPDS codes suitable for Code 2 (urgent) response and 221 for secondary triage.
  • Estimated a 28% reduction in Code 1 responses and a 120% increase in secondary triage caseload.
  • Predicted a 2.6 percentage point improvement in Code 1 cases attended within 15 minutes.

Conclusions:

  • Data-driven analysis supports modifying MPDS determinant codes to better match EMS response to patient acuity.
  • Proposed changes are expected to enhance response times for time-critical patients.
  • This methodology can be considered by other EMS systems with electronic data capabilities.