For CPR on an adult, what is the correct compression to ventilation ratio for an AEMT?

The correct compression to ventilation ratio for an Advanced EMT (AEMT) performing CPR on an adult is 30:2. This ratio is used in scenarios where a single rescuer is providing CPR. It indicates that for every 30 chest compressions delivered, the rescuer should provide 2 rescue breaths.

This ratio is important because it ensures that adequate circulatory support is maintained through continuous compressions while also providing necessary oxygenation with the rescue breaths. The emphasis on a higher compression count before breaths helps to keep blood circulating effectively, which is critical in maintaining perfusion to vital organs during a cardiac arrest.

In the context of the options that are not correct, the 15:2 ratio is typically used for child CPR, where a higher frequency of ventilation is needed relative to compressions due to anatomical differences and metabolic needs of smaller patients. The 30:1 and 5:1 ratios do not align with established guidelines for adult CPR, as they either focus too heavily on compressions or diminish the required rescue breaths per cycle significantly, which could compromise the effectiveness of resuscitation efforts.