A stabilization device to improve the quality of cardiopulmonary resuscitation during ambulance transportation: A randomized crossover trial

BackgroundThe quality of cardiopulmonary resuscitation (CPR) during ambulance transportation is suboptimal, and therefore measures that can improve the quality are desirable.PurposeTo evaluate whether the use of a stabilization device can improve the quality of CPR during ambulance transportation.MethodsThis randomized controlled crossover trial enrolled 22 experienced ambulance officers. Each participant performed CPR in an ambulance under three conditions with 72 h apart, each condition for 10 min: non-moving (NM), moving without device (MND), and moving with device (MD). The sequences of conditions were randomized. The primary outcomes were effective chest compressions recorded by the Laerdal Resusci-Anne Skill-reporter manikin. The secondary outcomes included the severity of back pain scored using the Brief Pain Inventory short-form, the physiology parameter before and after CPR, and the changes in postural stability which was represented by the sway index (SI) of lower back measured using a goniometer.ResultsThe overall effective compressions in 10 min were 87.0 ± 17% for NM, 59.0 ± 19% for MND, and 69.0 ± 23% for MD (p < 0.001). Compared to MND, MD had a lower no-flow fraction while driving on curved sections (0.04 vs. 0.29, p < 0.001). Whereas the pain severity and social interference scores were similar under all conditions, MND had a higher SI than MD and NM.ConclusionsThe use of a stabilization device can improve the quality of CPR and posture stability during ambulance transportation, although the effects on the severity of back pain were not significant.