Level of Consciousness and AVPU for Student Nurses
Learn how to assess level of consciousness using AVPU, recognise new confusion or reduced responsiveness and understand why neurological change can be a significant sign of patient deterioration.
What is AVPU?
AVPU is a rapid method of describing a patient's level of responsiveness. It can help identify an important change in neurological status during routine observations and assessment of deterioration.
The patient is awake and appropriately responsive without requiring stimulation.
The patient is not fully alert but responds when spoken to.
The patient responds only to an appropriate pressure stimulus used by a trained practitioner.
The patient does not respond to voice or an appropriate pressure stimulus.
How to assess level of consciousness
Start with normal interaction and observation. Use the least intrusive assessment necessary and work within your competence and local clinical procedures.
Observe before touching
Is the patient awake? Are their eyes open? Do they appear appropriately aware of their surroundings?
Speak to the patient
Introduce yourself and ask a simple question. Assess whether they respond appropriately to voice.
Consider orientation
Where appropriate, consider whether the patient appears oriented to person, place and situation compared with their normal baseline.
Identify new confusion
New confusion is clinically important and should be recognised as a possible sign of acute illness or deterioration.
Escalate reduced responsiveness
If the patient is responding only to voice, pressure or not at all, seek appropriate registered or emergency support promptly.
Record accurately
Document what you observed, the patient's AVPU status and any associated change from baseline.
Know the patient's baseline
Some patients may have chronic cognitive impairment or communication difficulties. The key question is often whether their behaviour or responsiveness is different from usual.
New confusion matters
NEWS2 includes new confusion within its assessment of consciousness. This recognises that an acute change in mental state may be an important indicator of physiological deterioration.
| Finding | What you may notice | Clinical thinking |
|---|---|---|
| Alert | Awake, engaging appropriately and behaving at usual baseline. | Continue assessment and consider the other vital signs. |
| New confusion | Disorientation, unusual behaviour, agitation or difficulty following conversation. | Establish whether this is new and communicate the change promptly. |
| Responds to voice | Drowsy or not fully alert but responds when spoken to. | This represents reduced responsiveness and requires appropriate escalation. |
| Responds to pressure | No response to voice but response to appropriate pressure stimulus. | This is a significant neurological finding requiring urgent clinical review. |
| Unresponsive | No response to voice or appropriate pressure stimulus. | Urgent assessment and emergency escalation are required. |
Do not normalise a new change
Comments such as “they're probably tired” or “they're just a bit confused today” can delay recognition of deterioration. A new neurological change deserves assessment.
What can alter consciousness?
Changes in consciousness have many possible causes. Your role as a student nurse is not to guess the diagnosis, but to recognise the change and help build an accurate clinical picture.
- Hypoxia or worsening respiratory illness.
- Hypoglycaemia or other metabolic disturbance.
- Infection or sepsis.
- Stroke or other acute neurological events.
- Medication effects, sedation or intoxication.
- Head injury.
- Poor circulation or shock.
- Seizure activity or the post-ictal period.
Changes that should get your attention
- New confusion or disorientation.
- Increasing drowsiness.
- Difficulty waking the patient.
- A change from Alert to responding only to Voice.
- Response only to pressure or no response.
- New agitation or unusual behaviour.
- Reduced consciousness alongside low oxygen saturation or abnormal respiration.
- Neurological change accompanied by abnormal blood pressure, pulse or temperature.
Compare with previous assessments
A patient who was alert and talking normally an hour ago but is now difficult to wake has experienced a significant change, even before you know the cause.
Putting the observations together
Example
Earlier in the shift, your patient was alert, talking normally and oriented to their surroundings.
During your next assessment they appear unusually sleepy, respond slowly when spoken to and seem confused about where they are.
Their respiratory rate is also increased and oxygen saturation is lower than previously.
The key issue is the new neurological change combined with worsening physiological observations.
As a student nurse, recognise the change, obtain accurate observations and promptly escalate your concern to the appropriate registered practitioner.
Consciousness assessment errors to avoid
- Assuming drowsiness is normal. Establish whether it represents a change from baseline.
- Ignoring new confusion. Acute confusion can be an important sign of deterioration.
- Recording AVPU without describing the change. Document what you actually observed.
- Assessing neurology in isolation. Review airway, breathing, circulation and other vital signs.
- Guessing the cause. Recognise and communicate the finding rather than trying to diagnose from one observation.
- Delaying escalation. Reduced responsiveness can represent serious deterioration.
Recognise → assess → communicate → escalate
Notice the change
Identify confusion, drowsiness, reduced responsiveness or behaviour that differs from the patient's baseline.
Build the picture
Assess AVPU alongside airway, respiration, circulation, oxygenation and the other observations.
Describe clearly
Explain what has changed and provide the current observations and relevant trend.
Seek appropriate help
Follow local escalation procedures and obtain urgent support when consciousness is significantly reduced.
Further learning: Royal College of Physicians — National Early Warning Score (NEWS2) .
Capillary Refill Assessment for Student Nurses
Learn what capillary refill can tell you about peripheral perfusion, how it is assessed and why changes should be interpreted alongside blood pressure, pulse and the wider circulation assessment.
Continue to Capillary Refill Assessment →