Recognising Neurological Deterioration for Student Nurses
Learn how to recognise changes in consciousness, cognition, behaviour and neurological function, carry out appropriate observations and escalate concerns promptly during clinical placement.
What is neurological deterioration?
Neurological deterioration describes a worsening in a patient's conscious level, cognition, behaviour, movement or other neurological function. Changes may be sudden and obvious, or they may develop more gradually.
A patient who becomes confused, unusually drowsy, difficult to wake, agitated or weak may be showing an important change in their clinical condition.
Neurological deterioration can have many possible causes. These include neurological emergencies, infection, hypoxia, metabolic disturbance, medication effects and other acute illnesses.
As a student nurse, your role is not to independently diagnose the cause. Your responsibility is to recognise the change, assess within your competence and escalate promptly to an appropriate registered practitioner.
What might neurological deterioration look like?
Consciousness
- Increasing drowsiness
- Difficult to wake
- Reduced responsiveness
- Loss of consciousness
- A clear change from previous observations
Cognition and behaviour
- New confusion
- Agitation or restlessness
- Disorientation
- Unusual behaviour
- Difficulty following instructions
Neurological function
- New weakness
- Facial asymmetry
- New speech difficulty
- Seizure activity
- New visual or coordination problems
Neurological assessment still begins with ABCDE
When neurological deterioration is suspected, it can be tempting to focus immediately on the brain. However, altered consciousness can be caused or worsened by problems elsewhere in the ABCDE assessment.
Airway
Reduced consciousness can compromise the patient's ability to maintain their airway. Assess airway patency and obtain urgent help if compromise is suspected.
Breathing
Assess respiratory rate, oxygen saturation and work of breathing. Hypoxia can cause restlessness, confusion and reduced consciousness.
Circulation
Assess appropriate circulatory observations such as pulse, blood pressure and perfusion. Circulatory compromise can affect neurological function.
Disability
Assess conscious level and other neurological findings within your competence. Consider new confusion and changes from the patient's previous neurological status.
Exposure
Look for additional clues such as signs of injury, infection or other illness while maintaining the patient's dignity and privacy.
AVPU provides a rapid assessment
AVPU is a simple method of describing a patient's level of responsiveness and can be useful during an initial assessment.
Alert
The patient is awake and responsive without requiring stimulation.
Voice
The patient responds when spoken to but is not otherwise fully alert.
Pressure
The patient responds only to an appropriate stimulus used in accordance with clinical guidance and your training.
Unresponsive
The patient does not respond appropriately and requires urgent clinical assessment.
Do not dismiss an acute change in cognition
New confusion can be an important sign of acute illness and should not automatically be attributed to age, dementia or the unfamiliar hospital environment.
Consider whether the patient's behaviour is different from their documented baseline. Information from relatives, carers and staff who know the patient may help establish whether the change is new.
Recognise sudden focal neurological symptoms
Sudden neurological symptoms can indicate a time-critical emergency. Be alert to new changes such as facial weakness, arm weakness or speech disturbance and escalate immediately according to local policy.
Face
Has the patient's face changed? Is there new facial weakness or asymmetry?
Arms
Is there new weakness, numbness or difficulty moving an arm?
Speech
Is speech newly slurred, confused, absent or otherwise abnormal?
Time
Treat sudden neurological symptoms as urgent and activate the appropriate local pathway without delay.
Look for change rather than isolated findings
| Observation | Possible change | Why it matters |
|---|---|---|
| Conscious level | Increasing drowsiness or reduced response | A decline from baseline can indicate significant deterioration. |
| Cognition | New confusion or disorientation | May be a sign of acute neurological or systemic illness. |
| Speech | New slurring, difficulty finding words or inability to speak normally | Sudden speech change requires urgent assessment. |
| Movement | New weakness, asymmetry or reduced movement | May indicate a focal neurological problem. |
| Pupils | New changes identified during appropriate neurological assessment | Changes should be reported and interpreted by appropriately trained clinicians. |
| Behaviour | New agitation, restlessness or unusual behaviour | Can be an early sign of physiological or neurological deterioration. |
Understand the purpose of GCS
The Glasgow Coma Scale, or GCS, is a structured method used to assess and communicate a patient's level of consciousness. It considers eye, verbal and motor responses.
Accurate GCS assessment requires appropriate training and consistent technique. As a student nurse, perform neurological observations only within your level of competence and required supervision.
Remember reversible causes of altered consciousness
A change in conscious level or behaviour does not always originate from a primary neurological condition. Hypoglycaemia, hypoxia, infection, medication effects and other physiological disturbances can cause neurological symptoms.
Blood glucose assessment may form part of the clinical assessment of an acutely confused or less responsive patient, according to local policy and your level of competence.
Recognise seizure activity and seek help
Seizure activity may present as obvious generalised movements, but neurological changes can also be less dramatic. Follow your placement provider's seizure and emergency procedures and summon registered clinical assistance promptly.
Observe and communicate useful information where it is safe to do so, such as the apparent start time, duration and what you observed before, during and after the event.
What should you do when neurological status changes?
Recognise the change
Compare the patient's current conscious level, cognition, behaviour and neurological function with their previous baseline.
Assess using ABCDE
Check for immediate airway, breathing or circulation problems before focusing only on neurological findings.
Obtain registered help
Inform the nurse responsible for the patient, your practice supervisor or another appropriate clinician promptly.
Communicate specific findings
Explain exactly what has changed, when it was noticed and any relevant observations or assessment findings.
Follow the local pathway
Use your organisation's deterioration, stroke, seizure, neurological observation or emergency pathway as appropriate.
Reassess and re-escalate
Continue appropriate observations and report further deterioration immediately.
Use SBAR to describe the neurological change
Example scenario
A patient who was alert and communicating normally earlier in the shift is now drowsy, confused and struggling to follow instructions.
The communication identifies the patient's baseline, describes the change and makes the need for review clear.
What can delay recognition?
Assuming confusion is normal
New confusion should be assessed rather than automatically attributed to age or pre-existing cognitive impairment.
Ignoring subtle drowsiness
A gradual decline in responsiveness can be clinically important, particularly when it differs from baseline.
Looking only at neurology
Hypoxia, hypotension, infection and metabolic problems can all cause neurological changes. Continue to use ABCDE.
Waiting for a diagnosis
You do not need to determine the cause before escalating a significant neurological change.
Ignoring relatives' concerns
Relatives or carers may recognise subtle changes from the patient's usual behaviour before staff do.
Failing to reassess
Neurological status can change rapidly. Continue observations according to the clinical situation and local policy.
Neurological deterioration checklist
- Has the patient's conscious level changed?
- Are they newly confused, agitated or unusually drowsy?
- Is this different from their normal baseline?
- Is there new facial, arm or leg weakness?
- Has speech changed suddenly?
- Has there been seizure activity?
- Are airway, breathing and circulation stable?
- Have relevant observations changed?
- Is there a significant change in NEWS2?
- Have I escalated the concern promptly?
Your role as a student nurse
Recognising neurological deterioration requires observation, communication and the confidence to raise concerns when a patient's condition changes.
The NMC Code emphasises preserving safety, communicating effectively and acting without delay when patient safety may be compromised. Student nurses should contribute actively to safe care while recognising the limits of their competence.
Key takeaway
Neurological deterioration may present as a change in consciousness, cognition, behaviour, speech, movement or responsiveness.
Compare the patient with their normal baseline, use ABCDE, recognise time-critical red flags and communicate significant changes promptly. You do not need to diagnose the cause before asking for help.
Always work within your scope of practice and competence, follow local policy and seek appropriate supervision from registered practitioners.
