What does AVPU mean in first aid term?

Alert: The person is awake and alert. They can respond to questions and follow instructions.

Vocal: The person is responsive to verbal stimuli. They can make sounds or words, but they may not be able to speak clearly.

Painful: The person responds to painful stimuli. They may cry out or move away from the source of pain.

Unresponsive: The person does not respond to any stimuli. They are unconscious and unresponsive.