Since CPR-2 revealed that chest compressions were significantly shallower when a supraglottic airway device was used, we decided to test whether including a feedback device could improve chest compression quality.
The results are as surprising as they are disappointing: the feedback was associated with slightly worse chest recoil and failed to improve compression depth.
Reference: Stuby L, Simonet S, Bourgeois L, Thurre D, Suppan L. Feedback devices may not improve chest compression depth during simulated out-of-hospital cardiac arrest: a multicenter randomized controlled trial. Emerg Care J. 2025. doi. 10.4081/ecj.2025.13736