What is the compression-to-breath ratio for adults in a two-rescuer CPR scenario?

In a two-rescuer CPR scenario for adults, the correct compression-to-breath ratio is 30:2. This means that for every 30 chest compressions delivered, two rescue breaths should be given.

This ratio is critical as it balances the need for effective blood circulation through compressions with the need to provide oxygen to the lungs through breaths. The emphasis on having a high number of compressions, followed by a quick pair of breaths, helps ensure that adequate perfusion continues to the vital organs, particularly the heart and brain, during a cardiac arrest.

The 30:2 ratio has been established based on research and guidelines from organizations like the American Heart Association (AHA), ensuring that CPR remains effective in providing oxygenated blood to the body while minimizing interruptions in chest compressions.