How many rescuers are recommended for performing high-quality CPR on an adult?

The recommendation of having at least two rescuers for performing high-quality CPR on an adult stems from the need to maintain effective chest compressions while minimizing the physical exhaustion that can affect the quality of CPR. High-quality CPR requires consistent and effective chest compressions at a rate of 100 to 120 compressions per minute, with a depth of at least 2 inches.

Having two rescuers allows for one person to perform compressions while the other can manage airway support and facilitate rescue breaths, if necessary, or prepare the defibrillator if the situation requires it. More importantly, it provides the ability to rotate rescuers, which is crucial in maintaining the quality of compressions over time, as fatigue can lead to decreased effectiveness. This rotation should occur every two minutes or after a set number of cycles, ensuring that the compressing rescuer is always fresh and able to deliver optimal compressions.

While an increased number of rescuers can certainly aid in performance and provide additional support, the critical factor is maintaining high-quality compressions, which is best achieved with at least two trained individuals actively participating in the resuscitation effort.