Figure 1.

The bundle of care. No single intervention is effective in the treatment of cardiac arrest. Key interventions that are similar across all 10 emergency medical services systems are in bold. ACD = active compression decompression, AED = automated external defibrillator, CCL = cardiac catheterization laboratory, CPR = cardiopulmonary resuscitation, ECLS = extracorporeal life support program, ECMO = extracorporeal membrane oxygenation, EP = electrophysiologic programs, ETCo₂ = end-tidal Co₂, IO = intraosseous infusion, ITD = impedance threshold device, PCI = percutaneous coronary intervention, SGA = supraglottic airway, TTM = therapeutic temperature management.