Introduction: Quality cardiopulmonary resuscitation (CPR) and timely defibrillation are associated with increasing survival to hospital discharge from out-of-hospital cardiac arrest (OHCA). The objective of this study was to demonstrate that performance coaching during an OHCA would improve compression depth and time to defibrillation (TTD).
Methods: This study was conducted in a single emergency medical services (EMS) agency and utilized data collected from 815 patients treated between 1/1/2012 and 12/31/2013. The intervention used multiple Plan-Do-Study-Act (PDSA) cycles to train fire captains to translate performance data into active direction. Testing began in simulation with small-scale expansions prior to system-wide implementation. Performance metrics included average (reported as a percentage) and actual compression depth (reported in millimeters), and TTD (an average in seconds). Analysis was conducted using Xbar and S control charts with standard assessment of special cause for performance data. A statistical shift was seen in means and standard deviations for both depth metrics.
Results: Average depth of compressions improved from 69.8% (SD=28.0%) to 80.4 (SD=21.8%). Depth of compressions delivered increased from 43.6mm (SD=8.2mm) to 47.2mm (SD=8.1mm). Analysis of the S charts indicates a statistical shift in process variation for TTD.
Conclusion: Early results indicate that utilization of a CPR coach during OHCA improves compression depth and TTD. Further data are needed to assess sustainability.
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