When performing CPR on an adult, what is the correct ratio of chest compressions to rescue breaths?

The correct ratio of chest compressions to rescue breaths during CPR on an adult is 30:2. This means that for every 30 chest compressions you provide, you should then give 2 rescue breaths. This ratio is established by guidelines as it optimizes the circulation of blood and oxygen in the event of cardiac arrest.

The emphasis on producing rapid, high-quality chest compressions (at least 100-120 compressions per minute) is crucial for maintaining blood flow to vital organs. The two rescue breaths following each set of compressions allow for oxygenation of the lungs, which is vital during cardiac arrest scenarios. This method strikes a balance between maintaining adequate blood circulation and providing oxygen to the victim.

In contrast, different ratios, such as 15:2, 30:1, or 20:2, are not recommended for adult CPR, as they do not align with established best practices for maximizing survival outcomes in adults undergoing cardiac arrest. Following the 30:2 ratio ensures effective performance of CPR in a real-world emergency situation.