What is an important sign that a person is in need of CPR?

The indication that a person is in need of CPR is that they are unresponsive and not breathing. These two criteria are critical because they confirm that the person is in a cardiac arrest situation or is experiencing a significant medical emergency that has compromised their ability to breathe independently and respond to stimuli. When someone is unresponsive, they do not react to any external cue, and when they are not breathing, it suggests that their heart may not be pumping blood effectively to the brain and other vital organs.

In the absence of spontaneous breathing and consciousness, CPR is vital as it can help maintain blood flow to the brain and other organs until advanced medical help can arrive. Initiating chest compressions and rescue breaths can provide the necessary circulation of oxygenated blood, which is essential for survival in such scenarios.