What is the compression-to-ventilation ratio for two-person CPR on an adult?

In two-person CPR for an adult, the correct compression-to-ventilation ratio is 30:2. This means that for every 30 chest compressions delivered, there should be 2 rescue breaths. This ratio is designed to optimize the effectiveness of CPR by providing a sufficient number of compressions to maintain blood circulation while also incorporating breaths to ensure oxygenation.

The guideline of 30 compressions followed by 2 breaths aligns with the overall goal of maximizing chest compressions, which are crucial for delivering blood to vital organs, while also maintaining a flow of oxygen to the lungs during the rescue breaths. It is important for both rescuers to coordinate well during this process, ensuring that the compressions are consistent and effective, allowing the other rescuer to focus on delivering the breaths.

Other ratios listed, such as 15:2, are used in the context of pediatric CPR rather than adult CPR and do not apply to two-person adult scenarios. 5:1 and 25:2 are not recognized ratios in current CPR guidelines, making the 30:2 ratio the standard practice for adult victims.