| | Public Health Safety | CPR What is the compression-ventilation ratio for 1-rescuer adult CPR? For 1-rescuer adult CPR, the compression-ventilation ratio is 30:2. This means that for every 30 chest compressions, you should give 2 rescue breaths. CPR - Related Articles Treatments for High Potassium Levels Ways to Cope With Anxiety How can the structure and function of bone be described? What Like to Live Well With Schizophrenia Beta Blocker Withdrawal Symptoms Ways to Conserve Water for Children What does a doctor mean by negative and Hawkins?