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Do EMS Physicians Delay On-Scene Times for HEMS Crews?

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Helicopter emergency medical services (HEMS) physician presence does not delay patient transport times. This study found no significant difference in scene intervals for HEMS calls with or without an EMS physician on scene.

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Area of Science:

  • Emergency Medicine
  • Prehospital Care
  • Medical Transport

Background:

  • Helicopter emergency medical services (HEMS) are vital for rapid triage and transport of critically ill patients.
  • Shorter prehospital intervals are linked to reduced mortality.
  • There's an increasing trend of emergency medicine physicians responding with HEMS.

Purpose of the Study:

  • To investigate whether the presence of emergency medical services (EMS) physicians on scene calls with HEMS impacts transport time to the hospital.
  • To determine if EMS physician involvement prolongs HEMS scene intervals.

Main Methods:

  • A retrospective chart review of HEMS scene calls from January 2016 to November 2020.
  • Comparison of HEMS scene intervals between calls with HEMS crews alone versus those with EMS physicians present.
  • Statistical analysis using the Wilcoxon rank-sum test (p<0.05 significance).

Main Results:

  • 1106 scene calls were analyzed, with 1079 involving HEMS crews alone and 23 involving EMS physicians.
  • Median HEMS scene intervals were 18 minutes for HEMS crews alone and 19 minutes with EMS physicians.
  • The Wilcoxon rank-sum test yielded a p-value of 0.30, indicating no statistical significance.

Conclusions:

  • The presence of EMS physicians on scene calls with HEMS does not significantly alter HEMS scene intervals.
  • EMS physician involvement is not associated with prolonged transport times for critically ill patients via HEMS.