High quality chest compressions and defibrillation are two of the most meaningful interventions in a cardiac arrest1. If you have taken Advanced Cardiac Life Support (ACLS), you’ve heard the mantra “I’m clear, you’re clear, everybody’s clear.”1 During delivery of a shock, valuable seconds of chest compressions are lost. This pause in chest compression translates to a decrease in coronary perfusion pressure, one of the largest predictors of return of spontaneous circulation (ROSC).2 After chest compressions resume, …