When performing single-provider CPR, which compression-to-ventilation ratio should be used?

The recommended compression-to-ventilation ratio for single-provider CPR is 30:2. This means that for every 30 chest compressions given, the rescuer should provide 2 rescue breaths. This ratio is particularly effective because it allows for a consistent and continuous approach to maintaining blood circulation and providing oxygen to the victim.

The 30:2 ratio is designed to optimize the heart's pumping action through compressions while also ensuring that the lungs receive enough air during the rescue breaths. This approach reflects current guidelines and is established based on research demonstrating that a higher number of compressions per breath is beneficial in a one-provider scenario.

In the absence of the correct information, other ratios such as 15:2, 20:2, or 40:1 do not align with the recommended practices established by organizations like the American Heart Association, which emphasize the importance of maintaining a certain balance of compressions and ventilations to maximize the chances of successful resuscitation.