When should you switch rescuers during CPR?

Switching rescuers during CPR is optimal every 2 minutes. This interval is recommended to ensure that rescuers maintain high-quality chest compressions, which should be performed at a rate of 100 to 120 compressions per minute. After about 2 minutes, fatigue can set in, which may lead to a decrease in the effectiveness of compressions, increased pauses between compressions, and a drop in overall performance.

By switching rescuers every 2 minutes, you can ensure that one rescuer can retain their strength and focus, leading to continuous, high-quality compressions and minimizing any interruptions in CPR. The 2-minute mark is also practical, as it allows each rescuer enough time to perform effective chest compressions without becoming overly fatigued, which is crucial during such a critical and time-sensitive situation.