In a three-rescuer resuscitation, fatigue is managed by rotating the compressor role every

• A. 30 seconds
• B. 2 minutes
• C. 5 minutes
• D. 10 minutes

Answer: (B)

Maintaining high-quality chest compressions depends on preventing fatigue. When the person doing compressions tires, depth and rate tend to drop, and recoil may become incomplete. In a three-rescuer team, switching the compressor every two minutes keeps the rescuer fresh and preserves the cadence, so compressions stay around the recommended depth and speed. Two minutes fits the standard CPR cycle, roughly five rounds of 30 compressions at 100–120 per minute, with minimal interruption during the handoff. Switching sooner, like every 30 seconds, would cause unnecessary interruptions and disrupt the rhythm. Waiting longer, such as five or ten minutes, allows fatigue to degrade compression quality, reducing perfusion to vital organs.