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Release velocity ImprovemenT with a new Metronome guIding chest COmpressions: The RITMICO simulation study
Maria Luce Caputo1,2,3, Giuliana Monachino4, Ruggero Cresta2
1Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Lugano, Switzerland.
Resuscitation Plus
|February 3, 2025
Summary
A novel double-click metronome significantly improves chest compression depth and release velocity during cardiopulmonary resuscitation (CPR) training. This audio feedback tool enhances CPR quality, particularly for first responders and non-specialized healthcare personnel.
Area of Science:
- Emergency Medicine
- Cardiology
- Medical Simulation
Background:
- Outcomes of out-of-hospital cardiac arrest are highly dependent on cardiopulmonary resuscitation (CPR) quality.
- Current CPR feedback devices often fail to adequately address chest recoil.
- Improving chest compression release velocity (CCRV) is crucial for effective CPR.
Purpose of the Study:
- To evaluate the efficacy of a novel double-click metronome in enhancing chest compression (CC) metrics during CPR manikin simulation.
- Specifically, to assess improvements in CC depth, rate, and CCRV.
Main Methods:
- A multicenter, non-blinded, randomized controlled trial was conducted with 503 volunteers of varying CPR expertise.
- A double-click metronome, providing distinct cues for compression and release, was compared to a standard metronome.
- Chest compressions (CC) depth, rate, and CCRV were measured using an automated external defibrillator with CPR quality analysis capabilities.
Main Results:
- The double-click metronome significantly improved median CCRV (difference 6 mm/s, p < 0.001) and CC depth (difference 0.1 cm, p < 0.001) compared to the standard metronome.
- Improvements in CC depth and CCRV were observed across all volunteer groups.
- The most substantial benefits were noted in first responders and non-specialized healthcare personnel.
Conclusions:
- The double-click metronome demonstrably enhances CPR quality, including critical metrics like chest compression depth and release velocity.
- This audio feedback tool shows promise for integration into automated external defibrillators for out-of-hospital cardiac arrest resuscitation.
- It also serves as a valuable training aid for improving CPR skills among diverse healthcare providers.
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