What is the recommended ratio of compressions to rescue breaths during CPR?

The recommended ratio of compressions to rescue breaths during CPR is 30:2. This ratio is part of the guidelines established by organizations such as the American Heart Association and reflects the best practices for adult CPR.

During CPR, effective chest compressions are critical for maintaining blood circulation and oxygen delivery to vital organs. The compressions need to be performed at a rate of 100 to 120 per minute. The 30:2 ratio allows for a balance between providing adequate compressions to circulate blood and delivering rescue breaths to ensure oxygen is introduced into the lungs. This method is designed to maximize the chances of survival in a cardiac arrest scenario.

The other options reflect less commonly recommended ratios, which may be applicable in different contexts but are not standard for adult CPR. For example, the 15:1 ratio might be used for infants or children in specific situations, while the 20:2 and 10:1 ratios do not align with current CPR guidelines for any age group. Therefore, the 30:2 ratio stands as the most widely accepted and effective approach for adult CPR.