What should be the compression-to-breath ratio in adult CPR?

The recommended compression-to-breath ratio in adult CPR is 30 compressions followed by 2 breaths. This ratio is based on the guidelines established by organizations such as the American Heart Association. The reasoning behind this specific ratio is to optimize the effectiveness of chest compressions, which are crucial in maintaining blood flow to vital organs during a cardiac arrest.

By performing 30 compressions, rescuers can maintain circulation for a longer period, effectively delivering oxygenated blood to the brain and other vital organs. Following the 30 compressions with 2 breaths allows the rescuer to provide breaths to help oxygenate the blood, addressing the primary issue during cardiac arrest: the lack of oxygen.

This balanced approach reflects the need for ongoing chest compressions while also incorporating rescue breaths, ensuring that the victim receives both circulation and oxygen, which increases the chances of survival until professional help arrives.