When performing CPR on an adult, what is the correct compression-to-rescue breath ratio for two-person CPR?

For two-person CPR on an adult, the correct compression-to-rescue breath ratio is 30:2. This means that for every 30 chest compressions administered, two rescue breaths are provided. This ratio ensures that there is an adequate number of compressions, which are crucial for maintaining blood flow to vital organs during cardiac arrest, while also incorporating breaths to provide oxygen.

The 30:2 ratio is a standard guideline established by organizations such as the American Heart Association for adult CPR, focusing on the effectiveness and efficiency of resuscitation efforts. In a two-person scenario, one responder can perform compressions while the other can manage ventilations, thus improving the overall effectiveness of resuscitation. The other options, such as 15:2 or any of the other ratios listed, do not align with the current CPR guidelines for adults.