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External chest compressions using a mechanical feedback device : cross-over simulation study.

M Skorning1, M Derwall, J C Brokmann

  • 1Bereich Notfallmedizin, Klinik für Anästhesiologie, Universitätsklinikum Aachen, RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.

Der Anaesthesist
|March 26, 2011
PubMed
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A new mechanical device significantly improved healthcare professionals' performance in external chest compressions (ECC) during simulated cardiac arrest. The device, providing visual and audible feedback, enhanced both compression rate and depth after minimal instruction.

Area of Science:

  • Cardiology
  • Emergency Medicine
  • Resuscitation Science

Background:

  • External chest compressions (ECC) are critical in resuscitation, yet healthcare professionals often exhibit suboptimal performance.
  • Existing standalone devices for ECC assistance have not achieved widespread adoption in clinical practice.
  • There is a need for effective adjuncts to improve ECC quality during in-hospital and out-of-hospital emergencies.

Purpose of the Study:

  • To evaluate the impact of a mechanical device with visual and audible feedback on ECC performance.
  • To assess if simplified instructions enhance the usability and effectiveness of the ECC assistance device.
  • To determine improvements in compression rate and depth among healthcare professionals using the device.

Main Methods:

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  • A prospective, randomized cross-over study involving 81 healthcare professionals performing ECC on a manikin.
  • Participants completed two 3-minute ECC sessions: one with the device and one without, in counterbalanced order.
  • Performance metrics included compression rate (90-110/min) and depth (40-50 mm), analyzed using SAS software.

    • Main Results:

    • Use of the device significantly improved adherence to target compression rates (82.5% with device vs. 30% without for Group 1) and depths (72.5% with device vs. 62.5% without for Group 1).
    • Group 2 showed similar improvements when using the device in their second session (82.9% for rate, 87.8% for depth) compared to unassisted ECC (12.2% for rate, 51.2% for depth).
    • The device demonstrated ease of use and enhanced confidence among participants.

    Conclusions:

    • The tested mechanical device is user-friendly, requiring less than 3 minutes of instruction.
    • The device significantly enhances external chest compression performance in simulated cardiac arrest scenarios.
    • Improvements were observed in both compression rate and depth, crucial for effective resuscitation.