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AVPU Scale

Category: Concepts Sources: raw/supplemental/patient-assessment-sequence.md, raw/nremt/psychomotor-skills.md Last updated: 2026-04-05

Overview

AVPU is a four-level scale for rapid assessment of level of consciousness (LOC). The letters stand for Alert, Voice, Pain, Unresponsive. It is used during the primary-assessment as the fastest reliable method to categorize a patient's mental status before the full assessment is complete. Unlike glasgow-coma-scale, AVPU takes about 5 seconds and requires no scoring math — it fits into the first 60 seconds of patient contact.

Every patient contact starts with an AVPU assessment. The result drives airway management decisions, transport priority, and whether you need to investigate further with a GCS.

The Four Levels

A — Alert

The patient is awake, aware, and interacting with the environment without stimulation. Alert does NOT necessarily mean oriented. A patient can be alert (eyes open, responding) while still being confused about person, place, time, or event.

Clinical picture: Eyes open spontaneously, patient speaks to you, tracks your movements. May or may not be oriented to all four spheres (person, place, time, event).

What to do next: Proceed with normal assessment. Document orientation status (A&Ox4 = alert and oriented to person, place, time, event; A&Ox1 = oriented only to person).

V — Voice (Responds to Verbal Stimuli)

Patient does not respond to the environment on their own but opens eyes, moves, or responds when you speak to them. This is not a normal alert state — it represents significant altered LOC.

Clinical picture: Eyes may be closed. Patient does not look up or respond until you call their name or give a command. May moan, turn toward voice, or open eyes briefly. May speak in confused or inappropriate words.

What to do next: Assess airway immediately — a patient at V may not maintain their own airway. Consider OPA or NPA. Escalate to priority transport. Consider GCS for documentation.

P — Pain (Responds Only to Painful Stimuli)

Patient does not respond to voice and only responds to a painful stimulus. This represents serious CNS depression — brainstem is still intact (pain response present) but cortical function is severely impaired.

Clinical picture: No eye opening, no verbal response to your voice. When you apply a painful stimulus (see technique below), patient may withdraw, groan, or exhibit posturing (flexion or extension).

Acceptable pain stimuli: - Supraorbital ridge pressure (thumb under orbital rim, compress for 5 seconds) - Trapezius pinch (grab upper trapezius muscle and twist) - Sternal rub is used in hospital settings but poorly differentiates localization from withdrawal; trapezius pinch is preferred in the field

What to do next: Airway at high risk — OPA immediately if no gag reflex. Priority transport. Call ALS. GCS is appropriate here to quantify motor response type.

U — Unresponsive

Patient shows no response to any stimulus — no eye opening, no verbal response, no motor response to painful stimuli.

Clinical picture: Completely unresponsive. Check for pulse. Check airway — may be obstructed or at risk of obstruction.

What to do next: Simultaneously manage airway and breathing. If no pulse and no breathing → cardiac-arrest-aed. If pulse present but no breathing → bvm-ventilation. GCS will be 3 (all ones: E1V1M1).

AVPU in the Assessment Sequence

AVPU is assessed as part of the general impression at the very start of the primary-assessment:

  1. Approach the patient
  2. Form general impression (age, sex, apparent distress)
  3. Assess AVPU — is the patient Alert, responding to Voice, responding to Pain, or Unresponsive?
  4. Immediately address any airway or breathing problem identified

Do not defer AVPU to later in the assessment. A patient who is V, P, or U has a known life threat to airway and brain function — that shapes everything that follows.

AVPU vs. GCS

AVPU Approximate GCS Clinical Significance
Alert 14–15 Awake; may or may not be oriented
Voice 10–13 Significant AMS; airway risk
Pain 6–9 Serious CNS depression; airway at high risk
Unresponsive 3–5 Least responsive; all systems compromised

When to use which:

  • AVPU every time, every patient, at the start of the primary assessment. Takes 5 seconds.
  • GCS when you have a patient with altered LOC who needs documented, trendable neurological scoring — particularly head trauma, TBI, altered mental status from any cause. Takes 30–60 seconds.

GCS is not a replacement for AVPU — they serve different purposes. AVPU is the screening tool; GCS is the documentation and trending tool.

See glasgow-coma-scale for full GCS scoring, trending methodology, and clinical interpretation.

Clinical Significance by Level

AVPU Transport Priority Airway Risk Next Step
A Determined by chief complaint Low Assess normally
V Likely priority Moderate OPA/NPA consideration; monitor closely
P Priority High OPA if no gag reflex; ALS intercept
U Always priority Immediate Manage airway NOW; BVM if not breathing

Airway Adjunct Correlation

AVPU findings directly determine airway adjunct selection:

  • Alert with gag reflex: No adjunct needed; position of comfort
  • V with intact gag reflex: NPA (nasopharyngeal airway) — NPA can be used in conscious or semi-conscious patients
  • V or P without gag reflex: OPA (oropharyngeal airway) — only safe in patients who cannot protect airway and will not gag
  • U: OPA or NPA; BVM ventilation if breathing inadequate

Common Mistakes

  • Confusing Alert with Oriented — A patient can be Alert (AVPU = A) but be A&Ox1 or A&Ox2 (oriented only to person). Document orientation separately. "Alert and oriented" is not the same as "normal mental status."
  • Using sternal rub for pain stimulus — Sternal rub is poorly standardized and does not reliably differentiate localizing from withdrawing. Use supraorbital ridge or trapezius pinch.
  • Documenting only "P" without specifying response type — A patient who withdraws from pain (GCS motor 4) is very different from one who postures (GCS motor 2 or 3). If you apply pain stimulus, document what the patient did.
  • Skipping reassessment — AVPU should be reassessed at every reassessment cycle (every 5 minutes for priority patients). A patient who was "A" and becomes "V" during transport is deteriorating — escalate immediately.
  • Missing the V patient's airway — The V patient looks okay because they're responding to something. Their airway is not protected the way an A patient's is. Assume risk and act accordingly.

NM Protocol Notes

  • NM EMS Treatment Guidelines (2022) use AVPU in the context of determining transport priority — any patient at V, P, or U represents at minimum a priority consideration.
  • For head injury patients: any patient at P or U on AVPU corresponds to GCS ≤9 and triggers the TBI protocol (see head-injury-tbi).
  • AVPU is documented on the patient care report (PCR) as part of primary assessment findings.
  • LOC trending (AVPU and GCS) is specifically required for head trauma patients per NM protocol — document initial and all subsequent assessments.

NREMT Relevance

Tested on both the cognitive exam and embedded in the Patient Assessment/Management skill stations:

  • Know all four levels and what stimulus is required for each
  • Understand the difference between Alert and Oriented — these are not synonymous
  • Know that P requires a painful stimulus before you can document the response
  • Know which airway adjunct is appropriate for each AVPU level
  • AVPU is always documented in the primary assessment — examiners expect you to verbalize it
  • Know the approximate GCS equivalents — NREMT cognitive exam may ask you to correlate a GCS score with an AVPU level

Sources

  • raw/supplemental/patient-assessment-sequence.md — Section 2: Primary Assessment
  • raw/nremt/psychomotor-skills.md — Patient Assessment/Management (Trauma and Medical)