Final answer:
Team roles should alternate during CPR to avoid fatigue. This allows team members to take turns providing chest compressions, reducing the risk of fatigue.
Step-by-step explanation:
Team roles should alternate providing compressions during CPR to avoid fatigue. CPR involves manually compressing the blood within the heart to push it into the pulmonary and systemic circuits. Since chest compressions need to be performed at a deepness of at least 5 cm and a rate of 100 compressions per minute, it can be physically demanding and lead to fatigue. By alternating roles, team members can take turns providing compressions, allowing for rest and reducing the risk of fatigue.