Improve Resuscitation Outcomes Using the Three Phase Cardiac Arrest Model.

Cardiac arrest is understood using three phases: electrical, physiologic, and metabolic, with different interventions prioritized in each phase. This discussion reviews these phases, their key resuscitation priorities, and related controversies. It highlights the importance of immediate defibrillation during the electrical phase, including why higher-energy shocks and potential double defibrillation is sometimes needed. It also explains why high-quality CPR is critical during the physiologic phase, how compression rates that are too fast or too slow can reduce outcomes, and why some experts recommend compression-only CPR in certain situations. Finally, it examines medication use during the metabolic phase, including medication dosing, the role of epinephrine, and whether steroids should be added. Current resuscitation literature, recommended interventions, and ongoing controversies are discussed within the framework of the three-phase cardiac arrest model.

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