In adult CPR, how many chest compressions should be performed immediately before administering two breaths?

In adult CPR, the recommended guideline is to perform 30 chest compressions before administering two breaths. This ratio is part of the primary approach to resuscitation, which emphasizes the importance of providing effective compressions to maintain circulation and oxygenation to the vital organs. Chest compressions help to artificially circulate blood, while the breaths provide the necessary oxygen.

The 30:2 compression-to-breath ratio ensures that the quality and effectiveness of compressions are prioritized, as they are critical for maintaining blood flow to the heart and brain during a cardiac arrest. By performing 30 compressions first, the rescuer maximizes the chances of restoring a meaningful heartbeat before delivering breaths.

This well-established approach is supported by guidelines from major resuscitation organizations and is designed to be effective in increasing the likelihood of survival following cardiac arrest. It emphasizes the importance of high-quality chest compressions and timely ventilations.