In adult CPR, what is the correct ratio of compressions to ventilations?

The correct ratio of compressions to ventilations in adult CPR is 30:2. This means that for every 30 chest compressions delivered, two rescue breaths are provided. This ratio is designed to optimize the effectiveness of the CPR process by ensuring sufficient blood circulation through chest compressions while also providing necessary oxygenation through ventilations.

In adult CPR, conducting compressions is critical, as they maintain blood flow to the heart and brain during cardiac arrest. Following every 30 compressions with 2 ventilations helps to address the oxygen deficiency in the blood, which is crucial for survival. This ratio has been recommended by various resuscitation councils, including the American Heart Association and other international guidelines, as it promotes a balance between chest compressions and breaths, maximizing the chances of restoring a viable heartbeat and effective circulation.

Other ratios provided in the choices are not in line with current guidelines for adult CPR. Such alternatives can lead to improper administration of CPR, potentially reducing the effectiveness of the life-saving effort during an emergency situation. Recognizing the importance of the 30:2 ratio ensures that individuals performing CPR are adhering to best practices, thus improving outcomes for the victim.