During CPR, what is the ideal compression-to-breath ratio for adults?

The ideal compression-to-breath ratio for adults during CPR is 30:2. This means that for every 30 chest compressions, two rescue breaths should be given. This ratio is crucial for effectively maintaining blood circulation and delivering oxygen to the lungs while attempting to restore normal heart function.

Using this 30:2 ratio allows for a high frequency of compressions, which are essential to keep blood flowing to vital organs, especially the brain and heart. Research has shown that higher compression rates improve the chances of survival, and the two rescue breaths following every 30 compressions help provide oxygen to the person in need.

The other ratios presented either provide too few compressions or do not align with current CPR guidelines, which emphasize the importance of maximizing compressions while still providing necessary breaths for oxygenation.