if more than one responder is available and trained in cpr when should the responders switch

Responders who are both trained in CPR should switch about every 2 minutes, which is roughly after 5 cycles of 30 compressions and 2 breaths for an adult. They should also switch sooner if the person doing compressions becomes tired or their compression quality (rate or depth) starts to drop.

Quick Scoop

• Standard timing: Switch every 2 minutes to keep compressions strong and effective.

• Cycle-based rule: In typical 1-rescuer adult CPR, this is about 5 cycles of 30:2 before switching.

• Fatigue rule: If the compressor shows visible fatigue (slower, shallower compressions, poor form), switch immediately, even if 2 minutes are not up.

• During natural pauses: A good moment to switch is during rhythm checks or AED analysis so that pauses in compressions stay under about 10 seconds.

In many training modules and test questions, the correct answers are usually “when the original responder is tiring,” “after every five cycles of CPR,” and “about every 2 minutes,” which all describe the same practical switching window.

Why switching matters

• High‑quality compressions need adequate depth and rate, which quickly decline as rescuers tire.

• Regular switching helps maintain blood flow to the brain and heart, improving the person’s chances of survival.

Bottom line: If more than one responder is available and trained in CPR, plan to switch about every 2 minutes or after around 5 cycles of compressions and breaths, and switch sooner if the person doing compressions is getting tired.