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The sequence of 30 compressions to 2 breaths is what the Emergency Cardiac Care committee determined as the best sequence, all things considered.
30 compressions to 2 breaths for one rescuer and 15 compressions to 2 breaths for 2 rescuers (also use the two hands encircling thumbs position for 2 rescuers). The old compression ratio was 5 compressions to 1 breath.
A combination of breaths and chest compression cycles.
30 compressions to 2 breaths
30 compressions to 2 breaths
CPR ratio is 30 compressions to 2 breaths.
30 compressions to 2 breaths.
The compression and ventilation ratio for a two-person rescue CPR is 15 compression and 2 breaths.
30 chest compression then 2 breaths for an adult and 15 chest compression and 1 breath for an infant or child.
Compress the chest about 1 1/2 inches per compression.
You are correct; 30 chest compressions and 2 rescue breaths.
For 1-person CPR the compression-ventilation ratio for children (and adults and infants) are 30 compressions to 2 breaths.