What is the correct compressions to breaths ratio for adult CPR with one rescuer?

The correct ratio for adult CPR with one rescuer is 30 compressions followed by 2 breaths. This standard approach is based on guidelines from organizations such as the American Heart Association, which outlines that this ratio maximizes the effectiveness of chest compressions while ensuring that the victim also receives timely rescue breaths.

Thirty compressions help maintain blood circulation to vital organs, providing critical oxygenation to the brain and heart during cardiac arrest. Following the compressions with 2 breaths ensures that the victim receives necessary oxygen, which is vital for survival when the heart has stopped functioning normally.

This 30:2 ratio is designed to be easily remembered and executed by rescuers, making it practical in emergency scenarios. The focus on compressions first aligns with the idea that maintaining blood flow is crucial, especially in the early stages of cardiac arrest before advanced medical help arrives.