What does the AVPU scale measure?

• A. Respiratory effort
• B. Level of consciousness: Alert, Verbal, Pain, Unresponsive
• C. Blood pressure variability
• D. Pupillary response

Answer: (B)

AVPU measures level of consciousness and responsiveness. It’s a quick bedside tool used in emergency and prehospital care to determine how awake and responsive a patient is. The four categories reflect the best level of response the patient shows to stimuli: Alert means they are fully awake and oriented; Verbal means they respond to speech but may not be fully oriented; Pain means they respond only to painful stimulation; and Unresponsive means there is no response to any stimulus. This simple scale helps quickly gauge neurological status and monitor changes over time, and it’s a faster alternative to more detailed assessments like the Glasgow Coma Scale.

The other aspects listed are not part of AVPU. Respiratory effort, blood pressure variability, and pupillary response involve different observations or tests and are not captured by this scale.