What is a sign of prolonged lifelessness according to the criteria for CPR?

Decapitation is considered a definitive sign of prolonged lifelessness and indicates that the individual has experienced irreversible biological death. In emergency medicine and CPR protocols, physical signs that show the body’s functionality has ceased are crucial in determining the appropriate actions to take. Decapitation signifies that the brain and the body are no longer connected, making any chances of resuscitation impossible.

Other choices, such as minimal respiration, presence of life signs, or fluctuating pulse, suggest some degree of physiological activity or function, which means that resuscitation efforts could still be considered. Therefore, decapitation stands out as the most decisive indicator of a situation where resuscitation efforts would not be warranted, firmly placing it within the established criteria for prolonged lifelessness.