Feedback devices may not improve chest compression depth during simulated out-of-hospital cardiac arrest: a multicenter randomized controlled trial
Emergency Care Journal · 2025-06-09 · Randomised trial
Abstract
Out-of-hospital cardiac arrest survival remains low, with highquality Cardiopulmonary Resuscitation (CPR) essential to improving outcomes. The i-gel® device allows continuous compressions but has been associated with reduced compression depth. While real-time feedback devices can improve CPR quality, their effectiveness alongside supraglottic airways remains untested. This multicenter, randomized, simulation-based superiority trial evaluated whether using a feedback device during CPR with i-gel® improves the proportion of compressions within the recommended depth range (5–6 cm). Between January and June 2023, 68 participants from eight EMS agencies formed 34 teams, randomized to either control (no feedback) or experimental (with feedback). All teams performed 10-minute adult CPR scenarios on a manikin in ventricular fibrillation, with immediate i-gel® insertion. The primary outcome was the proportion of compressions within the target depth range of 5 to 6 cm. Secondary outcomes included usual CPR and ventilation metrics. No significant differences were found in correct compression depth between control and feedback group (68.6% [95%CI 57.2-80.1] vs 60.5% [95%CI 50.5-70.5]). However, chest recoil was significantly better in the control group (95.9% vs 90.2%, p=0.024). Other CPR and ventilation metrics did not differ significantly. In conclusion, the feedback device did not significantly improve compression depth and was associated with slightly worse chest recoil.
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Tags
CPR feedback devices · Paramedics & EMTs · Supraglottic airway
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