According to the related link from the AHA, "Although research has not identified an ideal ratio, studies have indicated that more chest compressions given in each series during CPR should result in an increase in blood flow to the heart, brain, and other vital organs".
CPR ratio is 30 compressions to 2 breaths.
What is the compressions to breath ratio for 1-rescuer on infant
1 rescuer CPR is 30 compressions to 1 breath.
30 compressions to 2 breaths
The compression ratio for 2 rescuer neonatal CPR is 3 compressions, 1 breath.
30:2
30/2
What is the compressions to breath ratio for 1-rescuer on infant
For an adult, 2-rescuer CPR compression to breath ratio is the same as 1-rescuer; 30 compressions to 2 breaths.
3 compressions to 1 breath, or 90 compressions to 30 breaths on a per minute basis.
The lowest compression ratio of a compression-ignition engine that allows a specific fuel to be ignited by compression ignition.
23:1 compression ratio