What is the ratio of chest compressions to breaths in one-person CPR?

In one-person CPR, the recommended ratio of chest compressions to breaths is 30:2. This means that for every 30 chest compressions administered, the rescuer should provide 2 rescue breaths. This ratio is designed to maximize the chances of survival by ensuring that blood circulation is maintained through effective compressions while also providing necessary oxygen to the victim through breaths.

The guideline reflects updated CPR practices intended to be simple and effective, promoting a higher frequency of compressions, which is crucial in maintaining blood flow to vital organs during a cardiac arrest. The emphasis on delivering a higher number of compressions, compared to the breaths, is based on the understanding that continuous chest compressions are vital to ensure perfusion until advanced medical help arrives.

In contrast, other options suggest different ratios that do not align with the latest CPR guidelines. For instance, a ratio of 15:2 or any variation such as 30:3 or 15:1 does not represent best practices as outlined in current resuscitation protocols. The 30:2 ratio is the most widely recognized in training programs and emergency response scenarios.