What signifies the need for immediate CPR intervention?

The need for immediate CPR intervention is signified by the presence of no pulse. When a person has no detectable pulse, it indicates that the heart is not effectively pumping blood, which means that the body's vital organs, including the brain, are not receiving the oxygenated blood they need to function. This condition is critical and can lead to irreversible damage to the brain and other organs within minutes, highlighting the urgency of initiating CPR.

In contrast, a slow heart rate may still allow for some level of circulation, albeit insufficient, and could potentially resolve itself. A weak pulse suggests that the heart is still beating, albeit poorly, and there may still be some circulation occurring. Normal breathing indicates that the individual is stable, thus negating the need for CPR.