Rationale and Strategies for Development of an Optimal Bundle of Management for Cardiac Arrest

Area of Science:

• Emergency Medicine
• Cardiovascular Research
• Public Health Interventions

Background:

• Out-of-hospital cardiac arrest (OHCA) remains a leading cause of death with low survival rates.
• Improving neurologically intact survival requires a coordinated, multi-faceted approach beyond basic life support.
• Recent advancements in emergency medical services (EMS) systems show promise in enhancing patient outcomes.

Purpose of the Study:

• To develop a practical roadmap for improving neurologically intact survival after OHCA.
• To identify common elements in high-performing EMS systems.
• To provide a framework for other communities to enhance their cardiac arrest response.

Main Methods:

• Analysis of population-based OHCA outcomes from 10 high-performing U.S. EMS systems.
• Collated common elements from 9-1-1 agencies and EMS providers.
• Compared outcomes with the Cardiac Arrest Registry to Enhance Survival (CARES) database.

Main Results:

• The 10 EMS agencies demonstrated significantly higher rates of return of spontaneous circulation (37.4% vs 31.5%) compared to CARES.
• Neurologically favorable hospital discharge rates were significantly improved (10.7% vs 8.4% for all OHCA, and 41.6% vs 29.2% for witnessed, shockable rhythms with bystander CPR).
• Key interventions included public CPR training, smartphone apps, dispatcher protocols, mechanical CPR, and advanced post-arrest care.

Conclusions:

• A system-wide, choreographed approach combining traditional and novel strategies significantly enhances OHCA survival.
• Communities can improve outcomes by adopting similar integrated systems of care, training, and technology.
• The identified common elements provide a replicable model for optimizing cardiac arrest response nationwide.