Final answer:
For both 1-rescuer and 2-rescuer adult CPR, the compression-ventilation ratio is 30:2. Compressions must be at least 5 cm deep at a rate of 100 per minute, and high-quality chest compressions are prioritized over artificial respiration.
Step-by-step explanation:
The recommended compression-ventilation ratio for 1-rescuer adult CPR is 30:2, which means 30 chest compressions followed by 2 ventilations. For 2-rescuer CPR, the same 30:2 compression-ventilation ratio is recommended.
During CPR, compressions should be at least 5 cm deep and at a rate of 100 compressions per minute, resembling the beat of the song "Staying Alive" by the Bee Gees.
It's essential for the person performing CPR to continue high-quality chest compressions instead of focusing on artificial respiration, until either the patient shows signs of life or a healthcare professional declares the patient deceased.