Kinect-based real-time audiovisual feedback device improves CPR quality of lower-body-weight rescuers

Abstract

BackgroundChest compression (CC) quality is associated with rescuer posture and body weight. We designed a Kinect module-based real-time audiovisual feedback (AVF) device to investigate the relationship between rescuer posture, body weight, and CC quality. MethodsA total of 100 healthcare professionals were enrolled as participants in this randomized trial. A Kinect-based sensor system was used to monitor the depth and rate of CC and provide further real-time feedback. All participants were asked to perform continuous CC on a manikin with and without feedback for 2min individually in either a kneeling or standing position. ResultsA kneeling posture can provide higher rate of CC than a standing posture can (111.4±22.6 per minute vs. 99.1±18.9per minute, p value=0.005). Real-time AVF feedback can provide a better compression depth, rate, and effective compression ratio (6.16±1.88cm vs. 5.54±1.89cm, p value=0.02; 103.2±21.0/min vs. 96.7±25.8/min, p value=0.03; 62.6±28.0% vs. 51.0±33.2%, p value=0.004). Regardless of the effect of real-time feedback, the CC depth correlated to the rescuers' body weight. Rescuers who weighed below 71kg benefited from the Kinect module-based real-time AVF device in terms of improved CC quality. ConclusionThe Kinect-based AVF device can significantly improve CC quality in manikin training in rescuers with their body weight<71kg.