| | Public Health & Safety | CPR What is the ratio for doing CPR on a child? For children, the CPR ratio is 30 compressions to 2 breaths. This means that for every 30 chest compressions, you give your child 2 rescue breaths. CPR - Related Articles Why do CPR before AED arrives? How to Replace a Lost CPR Card What cpt is 96999? How to Determine Cardiac Output Can you get in trouble if do CPR with an expired card? What is the compression ventilation ratio for one man and two adult CPR? What is included for cpt code 76700?