Under which circumstance is it appropriate to stop performing CPR?

Stopping CPR is appropriate when a spontaneous pulse resumes. This indicates that the heart has started beating on its own again, which is a significant sign of recovery. The ultimate goal of CPR is to restore circulation and breathing, and achieving a spontaneous pulse suggests that the individual may regain consciousness and stability with further medical care.

While exhaustion of rescuers or the presence of authorized medical personnel can also signal when to stop CPR, the primary reason for ceasing CPR is when the victim shows signs of life, such as a return of spontaneous circulation. Continuing CPR after a pulse has returned could potentially cause harm, as it may lead to unnecessary physical trauma or complications.

The notion of enforcing a time limit like 30 minutes for CPR is not standard practice in wilderness or emergency settings, as each situation is different, and resuscitation efforts may still be warranted beyond that time frame if other factors suggest a chance for successful resuscitation.