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Expanding emergency department capacity: a multisite study.

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Expanding emergency department (ED) capacity improved mortality but not wait times for ambulance patients. Addressing the whole healthcare system is crucial for improving ED service outcomes.

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Area of Science:

  • Emergency Medicine
  • Health Services Research
  • Public Health

Background:

  • Emergency departments (EDs) face challenges with patient flow and resource allocation.
  • Ambulance arrivals represent a significant portion of ED presentations.
  • Understanding predictors of admission and outcomes is vital for service improvement.

Purpose of the Study:

  • To identify predictors of hospital admission for ambulance-arriving patients.
  • To describe ED outcomes before and after increasing emergency capacity.
  • To evaluate the impact of additional ED beds on patient flow and mortality.

Main Methods:

  • Retrospective comparative cohort study utilizing linked health data.
  • Analysis of ambulance offload delay, time to doctor, ED length of stay (LOS), admission rates, access block, hospital LOS, and in-hospital mortality.
  • Logistic regression to identify predictors of hospital admission.

Main Results:

  • Nearly one-third of 286,037 ED presentations were via ambulance; 40.3% required admission.
  • Increased ED capacity improved in-hospital mortality but not ambulance offload delay, time to doctor, or ED LOS.
  • Predictors of admission included age >65, triage category 1-3, circulatory/respiratory conditions, and ED LOS >4h.

Conclusions:

  • Expanding ED bed capacity positively impacted mortality but not time-sensitive outcomes.
  • Improvements in ED service outcomes require a holistic healthcare system approach.
  • Bed capacity adjustments alone may not resolve complex ED service delivery issues.