How often should compressions and breaths be given in CPR for adults?

The correct answer outlines the standard guideline for performing CPR on adults, which emphasizes delivering 30 compressions followed by 2 breaths. This ratio of compressions to breaths is critical for maintaining adequate blood circulation and oxygenation to vital organs during cardiac arrest.

In this approach, the 30 compressions serve to effectively pump blood through the heart and circulate it to the brain and other organs, addressing the immediate need for perfusion. Following the compressions, administering 2 breaths provides the necessary oxygen to the lungs, which is essential for successful resuscitation.

This sequence is based on evidence that shows that a higher number of compressions (30) promotes better circulation compared to fewer compressions. It allows for a more continuous flow of blood during a critical life-saving procedure, improving the chances of survival and a positive outcome for the patient.