After delivering a shock, how does the compression-to-ventilation ratio change for adult CPR?

The compression-to-ventilation ratio for adult CPR remains consistent at 30 compressions to 2 breaths, regardless of whether the CPR is being administered by one rescuer or two. This standardized ratio, recommended by the American Heart Association, is designed to maximize the effectiveness of chest compressions while ensuring that adequate breaths are provided.

After delivering a shock in a cardiac arrest scenario from an AED (Automated External Defibrillator), it is crucial to resume high-quality CPR immediately, maintaining the aforementioned ratio. This approach ensures that blood flow is prioritized through chest compressions, and sufficient oxygenation is achieved with the provided breaths.

Maintaining this ratio simplifies the process for rescuers, allowing for quick and effective response without having to adjust techniques based on varying circumstances or rescuer numbers. The focus on a consistent methodology is key in emergency situations, allowing for streamlined execution of life-saving measures.