Final answer:
Providers switch positions during CPR approximately every two minutes to maintain high-quality chest compressions and to avoid fatigue. Quick and seamless transitions are crucial to ensure consistent blood flow, especially to the brain.
Step-by-step explanation:
During CPR (cardiopulmonary resuscitation), providers should switch positions approximately every two minutes, or after about 5 cycles of 30 compressions and 2 breaths, to prevent fatigue which could decrease the quality of chest compressions. The transfer of roles should be as quick and seamless as possible to maintain the necessary compression rate of at least 100 compressions per minute and a depth of at least 5 cm. It is imperative to minimize interruptions to chest compressions to maintain blood circulation, particularly to the brain, where irreversible damage can occur within minutes of blood flow cessation.