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Novel stretcher mechanisms may reduce perceived exertion for emergency medical services (EMS) personnel. Stretcher A significantly lowered workload during stair descent and ambulance loading compared to Stretcher B.

Keywords:
Borg-scaleEMSStretcherWorkload

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Area of Science:

  • Emergency Medical Services (EMS)
  • Ergonomics and Human Factors
  • Medical Device Design

Background:

  • Emergency medical services (EMS) are crucial for out-of-hospital care.
  • EMS personnel frequently experience stretcher-related adverse events and musculoskeletal injuries.
  • Innovative stretcher designs may mitigate physical strain on EMS providers.

Purpose of the Study:

  • To evaluate and compare the perceived exertion of EMS personnel using two distinct stretcher systems.
  • To identify potential ergonomic benefits of novel stretcher mechanisms in simulated EMS scenarios.

Main Methods:

  • A simulation study involving 20 registered nurses and paramedics (10 pairs).
  • Participants used two EMS stretcher systems (Pensi stretcher A, ALLFA stretcher B) in a randomized crossover design.
  • Tasks included stair transport, patient loading, and ambulance loading, with perceived exertion measured via the Borg RPE scale.

Main Results:

  • No significant differences in perceived exertion were found for unloading, stair ascent, lateral lift, or flat ground transport.
  • Stretcher A demonstrated significantly lower perceived exertion for stair descent (p<0.001) and ambulance loading (p<0.001) compared to Stretcher B.
  • These findings suggest specific mechanisms in Stretcher A reduce physical strain during critical tasks.

Conclusions:

  • A structured simulation methodology can effectively assess exertion levels with different stretcher systems.
  • Supporting stretcher mechanisms can significantly reduce perceived exertion for EMS personnel, particularly during stair descent and ambulance loading.
  • This research supports the development and implementation of ergonomic stretcher designs to enhance EMS provider safety and well-being.