During cardiac arrest, what is the recommended ratio of compressions to breaths in adult CPR?

• A. 15:2
• B. 30:2
• C. 10:1
• D. 20:2

Answer: (B)

The recommended ratio of compressions to breaths in adult CPR during cardiac arrest is 30:2. This means that for every 30 chest compressions delivered, 2 rescue breaths should be administered. This ratio is established to maximize the number of compressions provided, thereby maintaining blood circulation to vital organs during the critical minutes of a cardiac arrest situation.

The emphasis on compressions is due to research indicating that high-quality compressions significantly improve survival outcomes. The 30:2 ratio strikes a balance between providing effective chest compressions and occasional ventilations, which are necessary to deliver oxygen to the lungs, especially in a non-breathing patient. This focus on efficient and continuous compressions is important in maintaining perfusion until advanced medical help arrives.