What is the appropriate compression to ventilation ratio for adult CPR?

• A. 15 compressions to 2 breaths
• B. 30 compressions to 2 breaths
• C. 30 compressions to 1 breath
• D. 15 compressions to 1 breath

Answer: (B)

The appropriate compression to ventilation ratio for adult CPR is 30 compressions to 2 breaths. This standard protocol has been established based on research showing that delivering 30 compressions followed by 2 breaths maximizes blood flow and improves the likelihood of spontaneous circulation during a cardiac arrest event in adults.

The rationale behind this ratio is that providing a higher number of compressions ensures better perfusion to vital organs, particularly the heart and brain, while still allowing for adequate ventilation. During CPR, the primary focus is to maintain circulation, and the compression rate of 30 allows for a quick return to compressions after delivering breaths, which is crucial for maintaining high levels of oxygenation and perfusion.

By adhering to this ratio, rescuers can effectively balance the need for chest compressions and rescue breaths, supporting the victim’s chance of survival in a cardiac emergency scenario.