In one rescuer CPR, what is the correct ratio of compressions to breaths?

The correct ratio of compressions to breaths in one rescuer CPR is 30 compressions to 2 breaths. This guideline is part of the universal CPR protocols established by organizations such as the American Heart Association (AHA).

In performing CPR, the primary goal is to maintain blood circulation and oxygen delivery to vital organs, particularly the brain and heart. The recommended ratio emphasizes the importance of chest compressions, which are critical for providing continuous blood flow. The 30 to 2 ratio means that for every 30 chest compressions delivered, the rescuer should give 2 rescue breaths, creating a rhythm that helps optimize the chances of survival while minimizing interruptions in circulation.

The other ratios provided do not align with these established guidelines for effective CPR, which prioritize maintaining a higher frequency of compressions to ensure sufficient blood flow during cardiac arrest situations.