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Using an audiovisual feedback device improves cardiopulmonary resuscitation performance during day and night - a
Melanie Preuss1, Rainer Röhrig2, Christian Hübel1
1Center for Acute and Emergency Medicine, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany.
BMC Emergency Medicine
|June 7, 2025
Summary
Real-time audiovisual feedback significantly improved cardiopulmonary resuscitation (CPR) compression depth in medical professionals during night and day simulations. This technology enhances CPR quality, regardless of the time of day.
Area of Science:
- Medical Simulation
- Emergency Medicine
- Cardiopulmonary Resuscitation Quality
Background:
- In-hospital cardiac arrest survival rates are lower during nighttime and weekends.
- Limited evidence exists on nighttime cardiopulmonary resuscitation (CPR) quality and the impact of feedback devices.
- This study investigates CPR quality differences between day and night, with and without feedback.
Purpose of the Study:
- To evaluate the effect of a real-time feedback device on CPR quality.
- To compare chest compression quality during day versus night simulations.
- To assess the influence of time of day on CPR performance with and without feedback.
Main Methods:
- 158 medical professionals were randomized into 'no feedback' and 'feedback' groups.
- Participants performed 3 two-minute CPR intervals on a manikin, both day and night.
- The 'feedback' group received real-time audiovisual guidance; primary endpoint was mean compression depth at night.
Main Results:
- Nighttime mean compression depth was significantly higher with feedback (47.7 mm) versus without (42.9 mm) at t1.
- No significant difference in mean compression depth was observed between day and night in either the 'no feedback' or 'feedback' groups.
- The feedback device improved compression depth at night, but no time-of-day difference was found with feedback.
Conclusions:
- Real-time audiovisual feedback significantly enhances chest compression depth during CPR.
- This improvement was observed during both day and night simulations.
- Feedback devices can be crucial for maintaining CPR quality irrespective of the time.
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