What is the appropriate compression-ventilation ratio for adults during CPR?

The appropriate compression-ventilation ratio for adults during CPR is 30:2. This ratio is recommended when performing high-quality cardiopulmonary resuscitation, especially by a single rescuer. In this approach, the rescuer delivers 30 chest compressions followed by 2 breaths, ensuring that compressions are the primary focus.

The rationale behind the 30:2 ratio is to optimize blood circulation by maintaining adequate compression depth and rate—at least 100 to 120 compressions per minute—while also providing timely ventilations. This balance aids in increasing the chances of return of spontaneous circulation and improving overall survival rates in cardiac arrest cases.

It's important to note that this ratio applies to adult victims and differs from the ratios used for children and infants, which can change based on the number of rescuers present. The emphasis on quick, high-quality compressions is crucial, as they maintain vital blood flow to the heart and brain until advanced life support can be provided.