Final answer:
The compression to ventilation ratio is the number of compressions given in relation to the number of ventilations during CPR. The current recommendation for adult CPR is 30:2.
Step-by-step explanation:
The compression to ventilation ratio is the number of compressions (chest compressions) given in relation to the number of ventilations (rescue breaths) administered during cardiopulmonary resuscitation (CPR) until the airway is placed. The current recommendation for compression to ventilation ratio in adult CPR is 30:2, which means 30 chest compressions are given followed by 2 rescue breaths.
For example, if you are performing CPR on an adult, you would give 30 chest compressions at a rate of about 100-120 compressions per minute, then give 2 rescue breaths, and continue this cycle until the airway is placed or professional help arrives.