What is the ideal ratio of compressions to breaths during CPR for adults?

The ideal ratio of compressions to breaths during CPR for adults is 30:2. This means that for every 30 chest compressions performed, rescuers should provide 2 rescue breaths. This ratio is recommended by major organizations such as the American Heart Association as it has been found to be effective in maintaining blood flow and improving the chances of survival until advanced medical care arrives.

The reasoning behind this specific ratio is based on the need to maximize the amount of time spent performing compressions, which are crucial for maintaining circulation. High-quality chest compressions produce blood flow to vital organs, particularly the heart and brain, which is essential when a person is in cardiac arrest. The 30:2 ratio strikes a balance that allows rescuers to provide adequate oxygenation through rescue breaths while also ensuring that compressions are performed consistently and effectively.

In contrast, ratios that involve significantly fewer compressions or breaths, such as 15:2 or 5:1, do not provide the same level of circulatory support or oxygenation and could negatively impact the success of resuscitation efforts.