In a standard CPR cycle, how many breaths follow 30 chest compressions?

In a standard CPR cycle, how many breaths follow 30 chest compressions?

• A. 4 breaths
• B. 1 breath
• C. 3 breaths
• D. 2 breaths

Answer: (D)

Balancing circulation and oxygenation is the key. After performing 30 chest compressions, you deliver 2 rescue breaths. This standard ratio keeps blood flowing to vital organs while providing enough air to oxygenate the bloodstream without introducing long pauses. Each breath should be about a second and cause chest rise; then you resume compressions right away. Choosing more than two breaths would extend the pause and reduce perfusion, while only one breath would not supply enough ventilation for an adult.

Balancing circulation and oxygenation is the key. After performing 30 chest compressions, you deliver 2 rescue breaths. This standard ratio keeps blood flowing to vital organs while providing enough air to oxygenate the bloodstream without introducing long pauses. Each breath should be about a second and cause chest rise; then you resume compressions right away. Choosing more than two breaths would extend the pause and reduce perfusion, while only one breath would not supply enough ventilation for an adult.