30:2
what is the recommended depth of chest compressions for a infant victim
30:2
15;2
With 2 rescuers, compressions and ventilations should be done at a ratio of 15:2 for an infant or child.
The compression and ventilation ratio for a two-person rescue CPR is 15 compression and 2 breaths.
It is the same for 1-rescuer CPR Adult, Child, and Infant: 2 ventilations to 30 compressions.
3 compressions to 1 breath, or 90 compressions to 30 breaths on a per minute basis.
30:2
30:2
30:2
The lowest compression ratio of a compression-ignition engine that allows a specific fuel to be ignited by compression ignition.
23:1 compression ratio
Compression ratio simply means the difference in size of the original vs compressed unit. Compression ratio is a commonly used term for internal combustion engine piston/cylinder compression and file compression. Ratios differ depending on the type of engine or the type of file being compressed. In file compression, 7zip has the highest compression ratio.
The compression ratio for the 1995 Mustang is: 9.0:1
The compression ratio for NASCAR engines is limited to 12.0:1.