In this retrospective study of >1000 out of hospital Vtach/Vfib cardiac arrest victims, researchers evaluated outcomes before and after the initiation of a cardiac arrest protocol that minimized interruptions in chest compressions. The protocol increased the compression-ventilation ratio to 50:2, utilized initial non-rebreather ventilation (instead of bag-mask), and delayed intubation attempts until after the 3rd round of compressions (with attempts limited to 10 seconds). They found the overall survival to discharge increased from 8% to 14% (OR 1.8, CI 1.2 to 2.7) (abstract). Minimizing interruptions of chest compressions is paramount in improving the survival of Vtach/Vfib cardiac arrest victims.
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