Final answer:
During 2-rescuer adult CPR, rescuers should switch duties every 5 cycles or about every 2 minutes to maintain the quality of chest compressions and increase the chances of survival during a cardiac arrest.
Step-by-step explanation:
During 2-rescuer adult CPR, rescuers are advised to switch duties after 5 cycles of CPR, or approximately every 2 minutes. This guideline ensures that the compressions remain effective, as the task can be physically demanding and the quality can decrease due to fatigue. Cardiopulmonary resuscitation, better known as CPR, is a life-saving technique that greatly enhances the chances of survival, especially when administered promptly and effectively. When performing CPR, high-quality chest compressions are emphasized, with recommendations calling for compressions that are at least 5 cm deep and at a rate of 100 compressions per minute. Given that brain cells begin dying after just a few minutes without oxygen, quick and efficient CPR is vital for increasing the survival chances of an individual suffering from cardiac arrest.