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Updated: Jun 15, 2025

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Is a Prolonged Emergency Department Stay a Risk for Patient Safety?

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Summary
This summary is machine-generated.

A prolonged emergency department length of stay (EDLOS) did not increase 10-day mortality in a Finnish hospital study. This finding held true even when considering emergency department crowding.

Keywords:
EDLOScrowdingemergency departmentemergency department length of staymortality

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Area of Science:

  • Emergency Medicine
  • Health Services Research
  • Patient Outcomes

Background:

  • Emergency department length of stay (EDLOS) is a metric for crowding and a potential risk factor for patient outcomes.
  • Previous studies suggest a link between prolonged EDLOS and adverse events, but results vary.
  • The impact of EDLOS on short-term mortality, especially during different ED occupancy levels, requires further investigation.

Purpose of the Study:

  • To determine the impact of prolonged emergency department length of stay (EDLOS) on short-term mortality.
  • To concurrently analyze these outcomes under varying emergency department occupancy conditions.

Main Methods:

  • Retrospective cohort study of 58,440 emergency department visits leading to hospital admission.
  • Data collected from Tampere University Hospital ED, Finland, between January 2018 and February 2020.
  • 10-day all-cause mortality was the primary outcome, analyzed against EDLOS in hours, controlling for confounders and ED crowding (occupancy >90%).

Main Results:

  • The 10-day mortality rate was 1.6% (938 patients).
  • A prolonged EDLOS was not associated with increased 10-day mortality in adjusted analyses (OR 1.01 per hour increase).
  • Findings remained consistent across crowded and non-crowded emergency department subgroups.

Conclusions:

  • In this Finnish tertiary hospital, prolonged emergency department length of stay (EDLOS) was not an independent risk factor for 10-day mortality.
  • Adjusting for confounding factors and emergency department crowding did not alter this association.