What is the ratio of chest compressions to breaths in adult CPR?

In adult CPR, the ratio of chest compressions to breaths is established to optimize the efficiency of resuscitation efforts. A ratio of 30 compressions to 2 breaths is recommended for adults. This means that after delivering 30 chest compressions, the rescuer should provide 2 rescue breaths.

This 30:2 ratio is designed to maintain adequate blood circulation while minimizing interruptions caused by delivering breaths. It ensures that a higher number of compressions are administered, which is crucial for keeping blood flowing to vital organs during cardiac arrest. The focus on compressions is critical because they are the primary mechanism that leads to perfusion of the heart and brain, which are essential for survival.

The other ratios presented do not align with current CPR guidelines for adults, highlighting the importance of following established protocols in emergency situations.