What is the correct compression-to-rescue breath ratio for one-person CPR on an adult?

In one-person CPR for an adult, the correct compression-to-rescue breath ratio is 30 compressions to 2 rescue breaths. This ratio is designed to maximize the effectiveness of compressions, which are critical for maintaining blood flow to vital organs, while still incorporating rescue breaths to provide oxygen.

The emphasis on a higher number of compressions allows for improved circulation, which is crucial during a cardiac arrest. Administering 30 compressions followed by 2 rescue breaths ensures a balance that helps to sustain the person's chances of survival until advanced medical help arrives. This protocol follows the guidelines set forth by major health organizations and is widely adopted in training for CPR. Understanding this ratio is essential for anyone performing CPR, as it directly impacts the effectiveness of the resuscitation efforts.