Department 01 · 25 scenarios

General Medical–Surgical Ward

See the risk. Understand the response.
Practise the reasoning you will carry to the bedside.

Plain English Primary sources Students & tutors

From routine safety to critical change

Learn the reasoning. Follow your local clinical pathway. These are fictional teaching cases, not patient-specific treatment instructions. Adult, pregnancy, pediatric and neonatal responses differ. Use the population-specific pathway and verified weight where required. Use current facility protocols, authorized orders and your scope of practice. Students work under supervision. In a real emergency, activate clinical help rather than consult this page.

How to use these cases Read the cues before opening the actions. Name your first priority, then compare your reasoning. The difficulty describes learning complexity; even an introductory case can involve a serious risk.

5 introductory5 intermediate5 difficult10 extremely difficult

Find or jump to a scenario

Learning complexity

25 of 25 scenarios

Open a scenario to explore its actions25 original cases

Falls & mobility

Dizzy on the first walk after surgery

Introductory

The situation

A 72-year-old is ready for the first assisted walk after abdominal surgery. On standing, they become pale and say, ‘The room is going dark.’ They had an opioid earlier and have eaten little. They are still speaking, but their knees begin to buckle. The call bell is behind them and the bathroom is several steps away.

What should catch your attention

Symptoms started on standing
Recent surgery and medication
Unsafe to continue walking

Your immediate priority

Prevent a fall first; then assess why the patient became dizzy.

01Standing → dizziness
02Stop + support
03Assess → safer mobility plan

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Stop the walk
Support the patient into a safe seated or lying position and call for assistance. Stay with them; do not ask them to walk back alone. [1]
Why it matters A planned activity must stop when the patient cannot safely tolerate it.
2
Check the cause
Assess consciousness, symptoms and vital signs. Check glucose when indicated. Review medicines, intake and bleeding clues; obtain lying/standing blood pressure only once safe and according to the assessment plan. [1]
Why it matters Dizziness can reflect a blood-pressure change, medication effect or another illness—not simply poor motivation.
3
Plan the next attempt
Report the episode, arrange clinical review when needed and update the assisted-mobility plan. Explain how to request help and keep the bell within reach. [1]
Why it matters An individualized plan addresses the reason this person is at risk.

What to look for next

Look for recovery of symptoms and safe vital-sign trends. Persistent faintness, new chest pain, breathlessness, bleeding or reduced consciousness needs urgent escalation. A settled episode still needs documentation before another walk.

Avoid this shortcut

Do not complete the walk to ‘build tolerance’ or label every episode as dehydration and give fluid automatically.

A clear way to hand it over

‘Dizziness began on standing during the first walk. We stopped safely. These are the observations, medication timing and intake. Please review before we mobilize again.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Orthostatic symptoms: symptoms linked to standing, sometimes caused by a drop in blood pressure.

Sources behind the actions 2 primary references

NICE · NG249: Falls assessment and prevention (2025)
Individual inpatient fall assessment, dizziness, mobility and lying/standing blood pressure when appropriate.
NICE · CG50: Recognising and responding to inpatient deterioration
Escalate using both physiological changes and clinical concern; emergencies bypass a routine graded response.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

© 2026 RN Clarity · Lumiere Labs. All rights reserved. Original scenarios and diagrams are for personal learning. Do not copy, screenshot, print, repost, sell or reproduce them without written permission, except where applicable law permits. Cited guidance belongs to its respective owners.

Skin & pressure safety

A heel changes colour before the skin breaks

Introductory

The situation

During a skin check, a bedbound patient says their heel hurts. The skin is intact but a new patch does not fade with gentle pressure. On darker skin, the change is less obvious; the heel also feels warmer and firmer than the other heel. The patient has stayed in the same position because turning hurts.

What should catch your attention

New pain at a pressure point
Non-blanching colour change
Limited movement

Your immediate priority

Relieve heel pressure now and start a documented prevention plan.

01Pain + colour/texture change
02Offload pressure
03Review skin + prevention plan

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Look beyond redness
Assess both heels and other pressure areas, including temperature, firmness, moisture and pain. Record the finding using the facility's skin-assessment system. [1]
Why it matters Early pressure damage can occur while the skin remains intact and may look different across skin tones.
2
Remove the pressure
Offload the affected heel with suitable equipment. Help the patient reposition safely and arrange pain management so movement is tolerable. [1]
Why it matters Continuing pressure can worsen tissue injury; relief and comfort make prevention possible.
3
Make prevention specific
Notify the appropriate clinician or wound team. Set individualized repositioning, skin-review and support-surface plans; address moisture and nutrition concerns. [1]
Why it matters A single pillow adjustment does not replace ongoing risk management.

What to look for next

Check whether pressure is truly removed, pain improves and the area changes. Reassess skin at the planned intervals and escalate spreading damage, blistering or dark purple/maroon change. Improvement does not justify restoring pressure to the area.

Avoid this shortcut

Do not massage or rub the damaged area. Do not rely on visible redness alone or apply one fixed turning interval to every patient.

A clear way to hand it over

‘New painful non-blanching heel change, skin intact. Heel offloaded. We need a documented skin and repositioning plan and wound review.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Non-blanching: the colour change does not fade when gently pressed. Offload: take pressure off the area.

Sources behind the actions 1 primary references

NICE · CG179: Pressure ulcers—recommendations
Skin assessment across skin tones, non-blanching changes, pressure relief and prevention; no skin massage.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

IV safety

A peripheral IV becomes swollen and painful

Introductory

The situation

A patient receiving plain 0.9% saline through a peripheral IV reports tightness at the site. The hand is puffy and cool, and fluid is no longer running normally. No tissue-damaging drug has been given through this cannula. The patient's next antibiotic is due soon, creating pressure to ‘get the line working.’

What should catch your attention

Swelling at the cannula
Discomfort and coolness
Infusion no longer running normally

Your immediate priority

Stop using the suspect IV; confirm the fluid before choosing the next steps.

01Swollen painful IV site
02Stop → identify substance
03Fluid-specific management

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Stop and inspect
Stop the infusion. Assess the site, pain, swelling and hand circulation; check what actually ran through the line and when. [1]
Why it matters A malfunctioning cannula may be delivering fluid into tissue rather than the vein.
2
Follow the correct pathway
For this confirmed non-vesicant saline infiltration, remove the malfunctioning cannula according to policy, elevate if appropriate and arrange new access elsewhere if needed. [1]
Why it matters The damaged access should not be reused. Local policy guides comfort measures and follow-up.
3
Recognize the important exception
If a tissue-damaging drug or an unknown substance was involved, activate the extravasation procedure, do not flush and keep the cannula initially for the specialist aspiration/antidote plan. [2]
Why it matters Drug leakage can require a different response from plain-fluid infiltration.

What to look for next

Monitor the extent of swelling, pain, skin condition, sensation and perfusion. Increasing pain, numbness, blistering or poor circulation needs prompt clinical review. Document the event and confirm safe access before the next medicine.

Avoid this shortcut

Do not force a flush to test the line. Warm or cold compresses are substance-specific; neither is a universal treatment.

A clear way to hand it over

‘Saline IV stopped for swelling and pain. No vesicant exposure identified. Site and circulation assessed; replacement access and site follow-up are needed.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Infiltration: non-vesicant fluid leaks into tissue. Extravasation: leakage of a substance that can injure tissue.

Sources behind the actions 2 primary references

CDC · Intravascular catheter infection prevention: summary
Regular catheter-site assessment and removal of malfunctioning peripheral catheters.
eviQ / Cancer Institute NSW · Extravasation management: clinical procedure
For suspected tissue-damaging drug leakage: stop, do not flush, retain access initially for a drug-specific plan.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Medication safety

The allergy story does not match the medication chart

Introductory

The situation

Before an ordered antibiotic, a patient says, ‘That medicine made my lips swell and I could not breathe last time.’ The electronic chart says ‘no known allergies.’ The patient is currently comfortable, with no reaction underway. A colleague says the drug was ordered, so it must be safe.

What should catch your attention

Previous swelling and breathing difficulty
Chart conflicts with patient history
Drug has not yet been given

Your immediate priority

Pause administration and resolve the discrepancy before exposing the patient.

01Patient history ≠ chart
02Pause + clarify
03Document → safe order

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Clarify the history
Check the exact medicine, reaction, timing and treatment the patient remembers. Record the uncertainty if details are incomplete. [1]
Why it matters The reaction history is more informative than a vague label such as ‘allergic to antibiotics.’
2
Resolve it with the team
Contact the prescriber and pharmacist, explain the severe reaction history and request an explicit safe treatment plan. Follow the facility process for holding a dose while clarification is obtained. [1]
Why it matters An order does not cancel an unresolved allergy risk; an alternative or formal specialist assessment may be required.
3
Make the information visible
Update allergy documentation and the relevant alerts according to policy. Confirm the patient understands which reaction was reported and hand it over. [1]
Why it matters A corrected record helps prevent the same mistake on another shift or at discharge.

What to look for next

Confirm the revised order and allergy record before giving any medicine. If a drug has already been administered and airway, breathing or circulatory symptoms appear, activate emergency help and the anaphylaxis pathway immediately.

Avoid this shortcut

Do not perform an informal ‘test dose,’ remove an allergy alert without assessment, or treat severe prior symptoms as a minor side effect.

A clear way to hand it over

‘The patient reports lip swelling and breathing difficulty with this antibiotic, but the chart conflicts. The dose is paused pending prescriber/pharmacy clarification.’

Use your facility's handover format; fill in the actual findings and times.

In plain English An allergy is an immune reaction. Nausea alone may be another adverse effect; serious swelling or breathing symptoms need particular attention.

Sources behind the actions 2 primary references

NICE · CG183: Drug allergy—recommendations
Confirm and document allergy history before drug administration; distinguish allergy from other adverse reactions.
Resuscitation Council UK · Emergency treatment of anaphylactic reactions
IM adrenaline/epinephrine first-line, positioning, emergency support and observation; antihistamines do not treat airway or circulatory compromise.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Communication & discharge

A patient nods at discharge but cannot explain the plan

Introductory

The situation

A patient who prefers another language is being discharged with a changed medicine schedule and wound-care instructions. They smile and nod but point to two boxes when asked which medicine stops today. A young family member offers to translate. Transport is waiting outside.

What should catch your attention

Preferred language is not being used
Medicine confusion
Time pressure at discharge

Your immediate priority

Check understanding before discharge; politeness is not proof of understanding.

01Nodding ≠ understanding
02Interpreter + teach-back
03A usable home plan

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Make communication usable
Arrange a qualified interpreter through the service. Use short sentences, one topic at a time and accessible written information in the patient's preferred language when available. [1]
Why it matters Competent language support is a safety measure, especially for medicine changes.
2
Use teach-back
Say, ‘I want to check that I explained this clearly. Please show me how you will take these tomorrow.’ Re-explain any unclear step and check again. [2]
Why it matters Teach-back checks the explanation rather than testing or blaming the patient.
3
Close the gaps
Verify medicines, wound care, warning signs, follow-up and whom to call. Involve the discharge team if the plan or access to supplies remains unclear; document the support used. [2]
Why it matters A practical plan must work when the patient is at home, not only while staff are present.

What to look for next

The patient should be able to describe the key actions and demonstrate the relevant task in their own words. If not, address the gap before finalizing discharge. Ask about transport, supplies and follow-up barriers without making assumptions about language or culture.

Avoid this shortcut

Do not rely on ‘Do you understand?’ Avoid using children or untrained people as interpreters for important clinical instructions.

A clear way to hand it over

‘Discharge needs an interpreter and another medicine review. Teach-back identified confusion about the stopped medicine; transport timing must be adjusted.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Teach-back: the patient explains or demonstrates the plan so the clinician can check how clearly it was taught.

Sources behind the actions 2 primary references

US HHS Office of Minority Health · National CLAS Standards: communication and language assistance
Competent language assistance; avoid using untrained people or children as interpreters.
AHRQ · Teach-back: patient and family engagement
Check the clarity of an explanation by asking patients to describe the plan in their own words.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Swallowing & aspiration

A new wet voice while drinking after stroke

Intermediate

The situation

A patient recovering from a stroke coughs during breakfast and develops a wet, gurgly voice after a sip of water. They say they can finish the drink. Earlier documentation described a safe swallow, but today's alertness is lower. Oral medicines are waiting on the trolley.

What should catch your attention

New cough with drinking
Wet voice
Swallowing ability may have changed

Your immediate priority

Stop oral intake and obtain reassessment rather than repeating a water challenge.

01Cough + changed voice
02Pause oral intake
03Reassess swallow + care routes

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Protect breathing
Stop food, drink and oral medicines temporarily under the dysphagia safety pathway. Keep the patient appropriately upright, assess breathing and manage airway distress using the emergency response if needed. [1]
Why it matters New swallowing signs mean the previous plan may no longer be safe.
2
Arrange a fresh assessment
Notify the medical team and speech-language/swallowing specialist. Use only the facility's approved screening process if trained; do not improvise another sip test. [1]
Why it matters Bedside signs can identify concern but cannot reliably exclude aspiration, including silent aspiration.
3
Keep care going safely
Request an interim hydration, nutrition and medication-route plan. Provide appropriate oral care and make the precautions visible at handover. [1]
Why it matters Protecting the airway should not leave essential treatment or hydration unaddressed.

What to look for next

Monitor breathing, alertness and any new oxygen requirement. Follow the revised texture/route plan after assessment; do not restart intake simply because coughing stops. Worsening breathlessness or inability to manage secretions needs urgent help.

Avoid this shortcut

Do not assume thickened fluids are automatically safe, crush every tablet, or interpret absence of coughing as proof that nothing entered the airway.

A clear way to hand it over

‘New cough and wet voice with water, lower alertness than yesterday. Oral intake paused for reassessment; we need safe routes for hydration and medicines.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Dysphagia: difficulty swallowing. Aspiration: material enters the airway; it can happen without an obvious cough.

Sources behind the actions 2 primary references

American Speech-Language-Hearing Association · Swallowing screening
Stop a screen when dysphagia risk appears; refer for assessment. Bedside signs do not reliably exclude aspiration.
American Heart Association / American Stroke Association · 2026 Guideline for early management of acute ischemic stroke
Time-sensitive stroke assessment, urgent imaging and specialist selection for reperfusion treatment.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Glucose safety

Low glucose when the meal has not arrived

Intermediate

The situation

A patient with insulin-treated diabetes becomes sweaty and shaky before lunch. Their bedside glucose is 58 mg/dL (3.2 mmol/L). They are awake, can follow instructions and can swallow safely. The meal was delayed after insulin was given. The nurse is tempted to wait because lunch is ‘nearly here.’

What should catch your attention

Glucose below 70 mg/dL / 3.9 mmol/L
Symptoms
Insulin–meal mismatch

Your immediate priority

Treat the low glucose promptly using the hospital's hypoglycemia protocol.

01Low glucose + symptoms
02Safe-route rescue
03Recheck → prevent recurrence

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Treat now
For this awake patient with a safe swallow, give the protocol's rapid-acting glucose/carbohydrate treatment; commonly this is about 15 g. Recheck after 15 minutes and repeat as the protocol directs if still low. [1]
Why it matters A normal meal later does not replace immediate correction of symptomatic hypoglycemia.
2
Match the route to safety
If alertness falls, swallowing becomes unsafe or the patient is nil by mouth, do not give oral treatment. Call urgent help and use authorized IV glucose or glucagon treatment under the emergency protocol. [2]
Why it matters Putting a drink in an unsafe airway can cause harm.
3
Prevent a repeat
Once glucose recovers, arrange the meal or follow-on snack as indicated. Report the event, review insulin timing and food availability with the team, and document the treatment and readings. [2]
Why it matters Correcting the number without fixing the cause leaves the next episode possible.

What to look for next

Confirm both glucose recovery and symptom improvement. Keep monitoring as the protocol specifies, especially after long-acting insulin or poor intake. Recurrent lows, seizures or reduced consciousness need emergency escalation.

Avoid this shortcut

Do not wait for lunch, give a slow fatty food as the first rescue, or make an unapproved permanent insulin change yourself.

A clear way to hand it over

‘Glucose was 58 after insulin with a delayed meal. Oral rescue given safely; repeat value is __. Meal and insulin plan need review.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Hypoglycemia: blood glucose is too low. Rapid carbohydrate: glucose that can be absorbed quickly.

Sources behind the actions 2 primary references

NIDDK · Low blood glucose (hypoglycemia)
Rapid carbohydrate for a person who can swallow; reassessment after 15 minutes; severe episodes require emergency help.
American Diabetes Association · Diabetes Care in the Hospital: Standards of Care—2026
Nurse-initiated hospital hypoglycemia protocols, documentation, medication/meal review and prevention of recurrence.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Infection prevention

New watery diarrhea after antibiotics

Intermediate

The situation

An older patient has four new watery stools in a day after a recent antibiotic course. A shared commode and blood-pressure cuff have been used. A laxative was also prescribed yesterday, so the cause is uncertain. The patient has cramping but is currently alert and hemodynamically stable.

What should catch your attention

New frequent unformed stools
Recent antibiotic exposure
Possible shared-equipment spread

Your immediate priority

Start the suspected infectious-diarrhea precautions while the cause is evaluated.

01New antibiotic-associated diarrhea
02Precautions + assessment
03Appropriate test + follow-up

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Limit spread early
Use the facility's contact-precaution pathway, gown/gloves and dedicated toilet/equipment where possible. Notify infection prevention; do not wait for a positive test to take precautions. [1]
Why it matters Suspected C. diff can spread while testing is pending.
2
Assess and test appropriately
Record stool frequency/character, abdominal symptoms, observations and fluid balance. Tell the team about antibiotics and laxatives; collect an appropriate unformed-stool sample if ordered. [1]
Why it matters Not every diarrhea episode is C. diff, and testing must fit the clinical picture.
3
Use the full hygiene plan
Follow hand-hygiene policy, including soap and water when hands are visibly soiled and outbreak precautions require it. Arrange spore-killing cleaning and safe equipment handling. [2]
Why it matters Gloves, correct removal and environmental cleaning matter; alcohol hand rub does not kill C. diff spores.

What to look for next

Monitor hydration, urine output, pain, distension and vital signs. New severe pain, abdominal swelling, fever, hypotension or confusion requires urgent review. Continue precautions for the locally required period and hand them over during transfer.

Avoid this shortcut

Do not diagnose infection from a stool smell, send formed stool routinely, or start an antidiarrheal or stop an antibiotic without the clinical plan.

A clear way to hand it over

‘Four new watery stools after antibiotics; a laxative was also used. Precautions are in place. Please review testing, medicines and hydration.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Contact precautions: extra measures to reduce spread through touch and contaminated equipment. Spores: hardy forms of the germ.

Sources behind the actions 2 primary references

CDC · C. diff infection prevention in acute care (May 2026)
Prompt contact precautions for suspected infection, appropriate testing, dedicated equipment and spore-killing environmental cleaning.
CDC · Clinical safety: hand hygiene for healthcare workers
Gown/gloves and hand hygiene; soap and water when visibly soiled and as an additional precaution in C. diff outbreaks. Alcohol rub access should remain available.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Urinary catheter safety

The urinary catheter bag stays empty

Intermediate

The situation

A patient with a catheter for recent urinary retention develops lower abdominal discomfort. The drainage bag has almost no new urine, although output was normal earlier. The tubing is caught under the patient's leg and the bag has been lifted above bladder level. The patient has no new fever or hypotension.

What should catch your attention

Abrupt reduction in drainage
Discomfort
A visible drainage-system problem

Your immediate priority

Check drainage without breaking the closed system; reassess the patient after the simple correction.

01Low drainage + discomfort
02Check closed drainage
03Reassess flow + patient

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Check the equipment
Remove kinks and dependent obstruction, position the bag below the bladder and keep it off the floor. Check connections without unnecessary disconnection. [1]
Why it matters A mechanical problem can stop drainage and a closed system reduces infection risk.
2
Check the patient
Measure and record drainage, discomfort and abdominal findings. If poor drainage or pain continues, notify the clinician and use the facility's retention/obstruction assessment, including bladder scanning when appropriate. [1]
Why it matters An empty bag is not proof that the kidneys stopped producing urine.
3
Use an authorized next step
Arrange catheter review or replacement if indicated. Review whether the catheter is still necessary. If true low urine output persists, assess illness and renal risk with the team. [2]
Why it matters Unnecessary catheter days increase risk; low output may also have causes beyond obstruction.

What to look for next

If flow resumes, confirm discomfort settles and track the actual amount. Ongoing retention, blood/clots, fever or systemic deterioration needs prompt review. A sudden large drainage volume may require closer fluid-balance monitoring according to the plan.

Avoid this shortcut

Do not routinely irrigate, squeeze forcefully or disconnect the system to ‘see what happens.’ Do not assume cloudy urine alone proves infection.

A clear way to hand it over

‘Low drainage and discomfort with a kinked tube; corrected at __. Output since correction is __. Ongoing symptoms need catheter/retention review.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Retention: urine remains in the bladder. Oliguria: unusually low urine output.

Sources behind the actions 2 primary references

CDC · CAUTI prevention: summary of recommendations
Closed, unobstructed catheter drainage, appropriate indication and avoidance of routine bladder irrigation.
NICE · NG148: Acute kidney injury—recommendations
Recognize low urine output, compare creatinine with baseline, investigate causes and do not routinely treat AKI with loop diuretics.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Delirium & cognition

‘Not themselves’ overnight: new confusion

Intermediate

The situation

A patient who was oriented earlier becomes quiet, distracted and unsure where they are. A relative says, ‘This is completely new.’ The patient has pneumonia, poor sleep and several recent medication changes. They are not shouting or climbing out of bed, so the change could easily be missed.

What should catch your attention

Acute change from baseline
Poor attention
Quiet presentation does not mean low risk

Your immediate priority

Treat a new mental-status change as a clinical change, not normal ageing.

01Acute change from baseline
02Urgent cause check
03Treat triggers + reassess

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Check urgent causes
Assess airway/breathing, circulation, oxygenation, glucose and observations. Escalate urgent abnormalities or focal neurological signs immediately. [1]
Why it matters Hypoxia, low glucose and serious illness can present as confusion.
2
Describe the change
Establish the baseline and onset with the patient, chart and family. If trained, use the ward's validated delirium tool, such as 4AT, and request clinical assessment. [1]
Why it matters Delirium often fluctuates; a clear comparison helps the team identify it.
3
Reduce triggers
Support orientation, glasses/hearing aids, sleep and safe mobility. Review pain, infection, constipation, retention, hydration and medicines with the team; individualize fluids in heart/kidney disease. [1]
Why it matters Treating causes and reducing stressors matters more than simply suppressing behaviour.

What to look for next

Track attention, alertness and observations over time. Improvement may fluctuate; record the trend and ongoing causes. Quiet or sleepy delirium can still deteriorate. Make a safe supervision plan and seek urgent help if consciousness worsens.

Avoid this shortcut

Do not automatically use restraints, sedatives or a dementia label. Family reassurance does not replace investigation of the sudden change.

A clear way to hand it over

‘New inattention and disorientation since __; baseline was __. Observations/glucose are __. Possible contributors are __. We need prompt assessment.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Delirium: a sudden, often fluctuating change in attention and thinking. Hypoactive delirium: a quiet, withdrawn form.

Sources behind the actions 2 primary references

NICE · CG103: Delirium—recommendations (assessment updated 2023)
Recognize acute changes, assess causes, use a suitable validated tool by trained staff, reorient and address hypoxia, hydration and infection.
NICE · CG50: Recognising and responding to inpatient deterioration
Escalate using both physiological changes and clinical concern; emergencies bypass a routine graded response.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Respiratory deterioration

Heart failure: breathlessness suddenly worsens

Difficult

The situation

A patient admitted with heart failure becomes very breathless at rest. They cannot finish a sentence and ask to sit up. Respiratory rate is 32/min and oxygen saturation is 86% on room air. Crackles are heard. They received IV fluids earlier, but the nurse must not assume fluid overload is the only possible cause.

What should catch your attention

New severe breathlessness
Low oxygen saturation
Increased work of breathing

Your immediate priority

Support breathing and activate urgent clinical review while assessing the cause.

01Breathlessness + hypoxemia
02Support breathing + urgent help
03Treat cause → monitor response

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Support and escalate
Stay with the patient, call the rapid-response team and use a supported upright position if tolerated. Give oxygen under the emergency protocol, targeting the documented appropriate range. [1]
Why it matters Severe hypoxemia and respiratory distress require action before routine rounds.
2
Gather the changing picture
Monitor breathing, blood pressure, pulse, alertness and rhythm; review intake/output, recent fluids and medicines. Report the timing and prepare for ordered ECG, imaging and blood tests. [2]
Why it matters Heart failure can cause pulmonary edema, but other causes of acute breathlessness must also be considered.
3
Support the treatment plan
Administer ordered diuretics and monitor urine output, renal function and electrolytes. Prepare for higher-acuity care or ventilatory support if distress persists or exhaustion develops. [2]
Why it matters Treatment aims to relieve congestion safely; breathing support may be needed when medicines alone are insufficient.

What to look for next

Look for less work of breathing, improving oxygenation and maintained circulation. Falling blood pressure, drowsiness, exhaustion or no response requires immediate re-escalation. Record response to each intervention rather than simply noting ‘oxygen given.’

Avoid this shortcut

Do not leave the patient flat, give an automatic fluid bolus for every low pressure, or independently increase diuretic doses.

A clear way to hand it over

‘New severe dyspnea, RR 32 and saturation 86%, with heart-failure history. Emergency support started. Recent fluids and current BP are __. Please assess now.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Pulmonary edema: fluid in the lungs. Dyspnea: breathlessness. Diuretic: medicine that increases urine output.

Sources behind the actions 2 primary references

British Thoracic Society · Oxygen use in adults in healthcare and emergency settings
Targeted oxygen therapy, urgent blood gases for hypercapnia risk and oxygen during critical illness without unsafe withholding.
NICE · CG187: Acute heart failure—recommendations
Specialist assessment, ordered IV diuretics with renal/urine monitoring and ventilatory support for selected severe respiratory failure.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Oxygen & ventilation

COPD: low oxygen and increasing drowsiness

Difficult

The situation

A patient with COPD and previous hypercapnic respiratory failure becomes drowsier during a chest infection. Saturation is 84% on room air and respiratory effort is increasing. Their chart documents an 88–92% oxygen target pending blood gases. Someone suggests withholding oxygen because ‘COPD patients must not have it.’

What should catch your attention

Saturation below the prescribed target
Drowsiness
Known risk of carbon-dioxide retention

Your immediate priority

Treat hypoxemia with controlled oxygen and obtain urgent assessment of ventilation.

01Low oxygen + drowsiness
02Controlled oxygen + gases
03Assess ventilation → escalation

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Start the right oxygen response
Call urgent help and give oxygen using the prescribed device/target and emergency protocol. If the patient becomes critically ill or peri-arrest, follow the resuscitation oxygen pathway without delaying life-saving support. [1]
Why it matters Both too little oxygen and uncontrolled oxygen can be harmful; withholding needed oxygen is unsafe.
2
Check more than saturation
Assess breathing effort, rate, alertness and circulation. Arrange urgent blood gases through the team and report previous hypercapnia, current oxygen and target. [1]
Why it matters A pulse oximeter measures oxygenation, not whether carbon dioxide is accumulating.
3
Prepare for treatment escalation
Support ordered bronchodilators and other exacerbation treatment. Prepare for non-invasive ventilation or higher-acuity transfer when the clinical team identifies respiratory failure. [1]
Why it matters An acceptable saturation after oxygen does not resolve inadequate ventilation.

What to look for next

Monitor saturation within the individualized range, alertness, effort and blood-gas response. Worsening drowsiness or exhaustion needs immediate escalation even if saturation rises. Confirm repeat blood-gas timing and the revised target with the team.

Avoid this shortcut

Do not aim for 100% by default, stop all oxygen to ‘protect respiratory drive,’ or apply an 88–92% target automatically to every person with COPD regardless of assessment.

A clear way to hand it over

‘Previous hypercapnic failure; now drowsy with saturation 84%. Controlled oxygen is __ and target __. We need urgent gases and respiratory review.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Hypercapnia: excess carbon dioxide in the blood. Ventilation: moving air well enough to remove carbon dioxide.

Sources behind the actions 2 primary references

British Thoracic Society · Oxygen use in adults in healthcare and emergency settings
Targeted oxygen therapy, urgent blood gases for hypercapnia risk and oxygen during critical illness without unsafe withholding.
NICE · CG50: Recognising and responding to inpatient deterioration
Escalate using both physiological changes and clinical concern; emergencies bypass a routine graded response.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Bleeding & perfusion

Postoperative bleeding before the blood pressure falls

Difficult

The situation

Four hours after abdominal surgery, a patient's dressing is becoming soaked and the drain fills faster than before. Pulse has risen from 82 to 118/min, the patient is pale and feels faint, but blood pressure is still near their earlier value. A handover note says ‘small ooze expected.’

What should catch your attention

Increasing loss rather than a small stable ooze
Rising pulse
Pallor and faintness

Your immediate priority

Escalate the changing pattern; do not wait for a low blood pressure to confirm danger.

01Loss + rising pulse
02Urgent review + quantify
03Resuscitation + bleeding control

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Call for immediate review
Stay with the patient, alert the surgical team and activate the local deterioration response. Assess airway, breathing, circulation and consciousness. [1]
Why it matters Symptoms and trends can trigger escalation even before a score or pressure becomes severely abnormal.
2
Make the loss measurable
Record drain volume, visible loss and timing; assess observations frequently. Check IV access and prepare for ordered blood tests and blood-bank samples. Apply pressure only to an accessible external bleeding site when appropriate to that procedure's instructions. [1]
Why it matters Clear measurements support resuscitation and source-control decisions; a hidden bleed may not match the visible amount.
3
Support resuscitation and review
Prepare prescribed fluids/blood products under the local bleeding pathway, with compatibility checks and transfusion monitoring. Report anticoagulant use and prepare for urgent surgical reassessment or transfer as directed. [2]
Why it matters Restoring circulation alone does not stop the source of bleeding.

What to look for next

Track perfusion, pulse, blood pressure, alertness and ongoing loss. Re-escalate immediately for worsening symptoms or delayed response. An initially normal hemoglobin or blood pressure does not reliably exclude an acute important bleed.

Avoid this shortcut

Do not repeatedly cover the problem with another dressing, manipulate a drain without instructions or dismiss a new trend because some postoperative ooze was expected.

A clear way to hand it over

‘Dressing/drain loss is increasing, pulse rose 82 to 118 and the patient is faint. Current observations and loss are __. We need surgical review now.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Perfusion: blood flow to tissues. Source control: finding and stopping the reason the patient is bleeding.

Sources behind the actions 2 primary references

NICE · CG50: Recognising and responding to inpatient deterioration
Escalate using both physiological changes and clinical concern; emergencies bypass a routine graded response.
NICE · NG24: Blood transfusion (updated February 2026)
General blood-product decisions, compatibility and patient monitoring; major bleeding follows a separate emergency pathway.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Kidney injury & fluids

Low urine output with a confusing fluid picture

Difficult

The situation

A 70-kg patient has produced 20 mL of urine per hour for six hours. They have chronic kidney disease, heart failure, swollen ankles and poor intake after vomiting. Creatinine is higher than baseline. The catheter drains freely. One colleague suggests a large fluid bolus; another suggests extra diuretic.

What should catch your attention

Sustained output below 0.5 mL/kg/hour
Creatinine has risen
Both dehydration and congestion may be relevant

Your immediate priority

Escalate possible kidney injury and obtain a patient-specific fluid assessment.

01Low output + rising creatinine
02Confirm → assess causes
03Individual plan + monitoring

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Confirm and report the trend
Check measurement, catheter patency if present, timing, weight and fluid balance. Compare creatinine and observations with baseline and notify the clinician promptly. [1]
Why it matters Low output and a rising creatinine need a cause assessment, not just a larger daily total.
2
Look for contributors
Assess circulation, breathing, edema, losses and medicines. Report infection/obstruction clues and recent NSAIDs, contrast or other renal risks; arrange ordered urine and blood tests. [1]
Why it matters Several causes can coexist, and treatment that helps one may worsen another.
3
Monitor the chosen plan
Give only the ordered fluid or medicine strategy and monitor its effect closely. Seek urgent help for pulmonary edema, severe electrolyte changes or systemic deterioration. [1]
Why it matters A fluid bolus can worsen congestion; diuretics do not routinely treat AKI itself.

What to look for next

Trend urine, renal tests, electrolytes, breathing and circulation after intervention. The desired result is improved organ perfusion without overload—not simply forcing urine. Continue escalating persistent oliguria even if the patient reports feeling comfortable.

Avoid this shortcut

Do not assume all low output is dehydration or give a ‘renal flush.’ Never use a single urine reading to choose an independent bolus or extra diuretic.

A clear way to hand it over

‘Output 20 mL/hour for six hours at 70 kg, creatinine up from __ to __. Drainage is patent; vomiting and heart failure coexist. Please assess the fluid/AKI plan.’

Use your facility's handover format; fill in the actual findings and times.

In plain English AKI: acute kidney injury—a recent fall in kidney function. Creatinine: a blood test used with other information to assess kidney function.

Sources behind the actions 2 primary references

NICE · NG148: Acute kidney injury—recommendations
Recognize low urine output, compare creatinine with baseline, investigate causes and do not routinely treat AKI with loop diuretics.
NICE · CG187: Acute heart failure—recommendations
Specialist assessment, ordered IV diuretics with renal/urine monitoring and ventilatory support for selected severe respiratory failure.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Acute coronary syndrome

New chest pressure that is called ‘indigestion’

Difficult

The situation

A patient develops central chest pressure, nausea and sweating while resting on the ward. They say it may be indigestion. They have diabetes and a previous cardiac history. Their pain is new, and no ECG has yet been recorded. Saturation is 97% on room air.

What should catch your attention

New chest pressure
Sweating and nausea
Cardiac risk/history

Your immediate priority

Activate urgent chest-pain assessment instead of testing an indigestion theory first.

01New possible cardiac symptoms
02Urgent ECG + assessment
03Authorized treatment + reassess

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Assess and call
Stop exertion, stay with the patient and call the local urgent chest-pain/rapid-response pathway. Assess circulation, breathing, symptom onset and associated symptoms. [1]
Why it matters ACS can present in several ways and cannot be excluded by the patient's description alone.
2
Obtain diagnostic information quickly
Arrange a prompt 12-lead ECG, monitoring, IV access and ordered troponin tests. Report medicines, allergies and bleeding history. Persistent or recurring symptoms may require repeat assessment/ECGs. [2]
Why it matters An early ECG and the clinical picture guide time-sensitive treatment; one normal tracing does not settle every case.
3
Follow the treatment pathway
Give antiplatelet or anti-ischemic treatment only under an authorized protocol/order after contraindication checks. Use oxygen for hypoxemia or other specific indications, not routinely at this saturation. [2]
Why it matters The right treatment depends on blood pressure, ECG, bleeding risk and the suspected cause.

What to look for next

Track pain, rhythm, observations and the response to treatment. New hypotension, arrhythmia, severe breathlessness or collapse needs emergency resuscitation. Pain relief by itself does not rule out myocardial injury.

Avoid this shortcut

Do not delay an ECG for an antacid trial or give nitrates without checking the order, blood pressure and relevant contraindications.

A clear way to hand it over

‘New central pressure since __ with nausea/sweating. Cardiac history and medicines are __; observations __. Urgent ECG and chest-pain review requested.’

Use your facility's handover format; fill in the actual findings and times.

In plain English ACS: acute coronary syndrome—suddenly reduced blood flow to heart muscle. Troponin: a blood marker of heart-muscle injury.

Sources behind the actions 3 primary references

American Heart Association · Key patient messages: 2025 ACS Guideline
Chest discomfort, breathlessness, sweating and atypical symptoms warrant prompt assessment.
AHA / ACC and collaborating societies · 2025 Acute Coronary Syndromes Guideline
Rapid ACS assessment and diagnostic/treatment pathways; antiplatelet and reperfusion decisions require clinical evaluation.
British Thoracic Society · Oxygen use in adults in healthcare and emergency settings
Targeted oxygen therapy, urgent blood gases for hypercapnia risk and oxygen during critical illness without unsafe withholding.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Stroke emergency

An inpatient suddenly cannot speak clearly

Extremely difficult

The situation

At 14:20, a patient suddenly has facial asymmetry, right-arm weakness and difficulty finding words. A staff member saw them speaking normally at 14:05. They take an anticoagulant. Glucose is 112 mg/dL (6.2 mmol/L). The symptoms begin improving, but have not disappeared.

What should catch your attention

New focal neurological signs
A known last-well time
Anticoagulant use affects treatment decisions

Your immediate priority

Activate the stroke pathway immediately; improving symptoms do not justify waiting.

01Sudden focal deficit
02Stroke call + last-well time
03Imaging → specialist treatment

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Call the stroke response
Stay with the patient, activate the stroke/emergency team and assess airway, breathing, circulation and glucose. Record symptom discovery and the last time they were known normal. [1]
Why it matters Time and clinical findings influence specialist treatment eligibility.
2
Prevent avoidable harm
Keep oral intake and oral medicines paused until swallowing safety is assessed. Prepare urgent imaging and report anticoagulant name, last dose and recent procedures; use the local transfer pathway. [2]
Why it matters A brain bleed and a blocked vessel need different treatment, and swallowing may be unsafe.
3
Support specialist decisions
Monitor neurological status and observations, and prepare prescribed stroke treatment. Thrombolysis or thrombectomy is selected by the stroke team after imaging and eligibility assessment. [1]
Why it matters The RN enables rapid assessment and treatment without guessing the stroke type or treatment window.

What to look for next

Document changes precisely and notify the team immediately of deterioration, vomiting, seizure or reduced consciousness. Maintain the prescribed observation and blood-pressure plan; do not assume recovery means the emergency has ended.

Avoid this shortcut

Do not give aspirin before the bleeding/ischemic assessment or independently lower blood pressure. Do not spend the treatment window finishing routine paperwork.

A clear way to hand it over

‘Stroke response: new right-arm weakness and speech difficulty at 14:20, last known well 14:05. Glucose 112, anticoagulant __ last taken __. Current signs are __.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Last known well: the last time the patient was known to be at their usual neurological baseline. Reperfusion: restoring blood flow.

Sources behind the actions 2 primary references

American Heart Association / American Stroke Association · 2026 Guideline for early management of acute ischemic stroke
Time-sensitive stroke assessment, urgent imaging and specialist selection for reperfusion treatment.
American Speech-Language-Hearing Association · Swallowing screening
Stop a screen when dysphagia risk appears; refer for assessment. Bedside signs do not reliably exclude aspiration.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Sepsis & shock

Possible sepsis: the patient is suddenly confused and hypotensive

Extremely difficult

The situation

A patient with a suspected urinary infection becomes confused, breathes 30 times/min and has blood pressure 86/50 mmHg. Their hands are cool and urine output has fallen. They also have heart failure, making fluid decisions less simple. A routine antibiotic dose is not due for another three hours.

What should catch your attention

Possible infection plus new organ dysfunction
Hypotension
Confusion and low output

Your immediate priority

Treat this as an emergency; do not wait for the scheduled medicine round or a lab result.

01Infection concern + organ dysfunction
02Emergency sepsis response
03Prompt treatment + perfusion review

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Activate the sepsis response
Call immediate emergency/rapid-response help. Assess ABCs, obtain frequent observations and support oxygenation when needed. Use the sepsis pathway and report the heart-failure history. [1]
Why it matters Shock and suspected infection require immediate assessment and resuscitation.
2
Prepare prompt investigations and treatment
Obtain IV access and ordered cultures/lactate promptly. Give prescribed antimicrobials urgently; cultures should ideally precede them but must not cause a clinically important delay. [1]
Why it matters Evidence collection and treatment should run together rather than become competing tasks.
3
Monitor resuscitation closely
Carry out the clinician's crystalloid plan with frequent reassessment of perfusion and breathing. Prepare higher-acuity transfer and ordered vasopressors if needed. [1]
Why it matters Sepsis resuscitation must account for this patient's risk of under-treatment and fluid overload.

What to look for next

Track mental status, pressure, capillary refill, urine, breathing and lactate trends as ordered. Persistent poor perfusion or worsening congestion needs immediate review. A normal temperature or one normal test does not exclude sepsis.

Avoid this shortcut

Do not wait for every bundle item before starting care, assume confusion is baseline or administer an unapproved fixed fluid volume regardless of response.

A clear way to hand it over

‘Possible infection with new confusion, BP 86/50, RR 30 and falling urine. Heart failure present. Sepsis response activated; cultures/lactate and urgent antimicrobial orders are needed.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Sepsis: a dangerous response to infection causing organ dysfunction. Lactate: one blood test that can help assess illness and perfusion, not a diagnosis by itself.

Sources behind the actions 2 primary references

SCCM / ESICM · Surviving Sepsis Campaign adult guidelines—2026
Immediate emergency response, cultures/lactate, prompt antimicrobials in shock and individualized resuscitation with reassessment.
NICE · CG187: Acute heart failure—recommendations
Specialist assessment, ordered IV diuretics with renal/urine monitoring and ventilatory support for selected severe respiratory failure.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Anaphylaxis

Antibiotic infusion: wheeze, swelling and falling pressure

Extremely difficult

The situation

Minutes after an IV antibiotic starts, a patient develops wheeze, swollen lips and dizziness. Blood pressure falls and breathing becomes harder. A rash is present, but the airway and circulation changes are the main concern. Antihistamine is available nearby, while the emergency trolley is outside the room.

What should catch your attention

Rapid onset after exposure
Airway/breathing symptoms
Circulatory compromise

Your immediate priority

Stop the exposure and activate emergency treatment for suspected anaphylaxis.

01Exposure → ABC compromise
02Stop + emergency IM epinephrine
03Reassess + continued resuscitation

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Call and position safely
Stop the antibiotic, call the emergency team and assess ABCs. Keep the patient lying with legs raised when tolerated; if breathing is very difficult, allow a supported position with legs extended. Do not let them stand or walk. [1]
Why it matters Sudden upright movement can worsen circulation in anaphylaxis.
2
Prioritize epinephrine
Give intramuscular epinephrine/adrenaline promptly through the authorized emergency protocol, using the correct preparation and dose. Repeat according to that protocol if needed; provide oxygen and airway support. [1]
Why it matters IM epinephrine is first-line treatment for airway or circulatory anaphylaxis, not an optional step after antihistamine.
3
Support continued resuscitation
Prepare ordered IV fluids and advanced support; monitor continuously. Document the exposure, timings and response, and arrange the required observation and allergy follow-up. [1]
Why it matters Symptoms can persist or recur after apparent improvement.

What to look for next

Watch airway swelling, respiratory effort, pressure and consciousness after each intervention. Escalate refractory symptoms immediately. If cardiac arrest occurs, begin the resuscitation pathway. A fading rash does not demonstrate stable breathing or circulation.

Avoid this shortcut

Do not delay epinephrine for antihistamines or steroids, give IV epinephrine casually, or assume the absence of a rash rules out anaphylaxis.

A clear way to hand it over

‘Suspected anaphylaxis after __ at __: wheeze, lip swelling and falling BP. Exposure stopped, emergency call made; IM epinephrine given at __ with response __.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Anaphylaxis: a rapid, potentially life-threatening allergic reaction. Epinephrine and adrenaline are names for the same medicine.

Sources behind the actions 2 primary references

Resuscitation Council UK · Emergency treatment of anaphylactic reactions
IM adrenaline/epinephrine first-line, positioning, emergency support and observation; antihistamines do not treat airway or circulatory compromise.
NICE · CG183: Drug allergy—recommendations
Confirm and document allergy history before drug administration; distinguish allergy from other adverse reactions.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Opioid respiratory depression

After an opioid: a normal saturation but dangerously slow breathing

Extremely difficult

The situation

After a prescribed opioid, a patient is difficult to wake and breathing only six shallow breaths/min. Supplemental oxygen keeps their saturation at 96%. They have a pulse. The bedside monitor looks reassuring to a busy colleague, but the patient's chest barely moves.

What should catch your attention

Markedly reduced alertness
Slow shallow breaths
Oxygen can mask poor ventilation

Your immediate priority

Support breathing now; do not use the saturation alone to decide the patient is safe.

01Slow breathing despite oxygen
02Airway + assisted ventilation
03Naloxone → monitor for recurrence

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Call and support ventilation
Activate emergency help, open/support the airway and provide assisted ventilation with appropriate equipment if trained. Stop further opioid delivery, including an active infusion, under the emergency safety procedure. [1]
Why it matters The immediate threat is inadequate breathing and carbon-dioxide clearance.
2
Use reversal alongside support
Give naloxone through the authorized protocol/order. Continue breathing support while it takes effect; if cardiac arrest is identified, prioritize CPR and the resuscitation algorithm. [1]
Why it matters Naloxone must not delay ventilation or proven resuscitation actions.
3
Plan for recurrence
Monitor breathing and consciousness closely, review dose/timing, other sedatives and renal risks with the team, and arrange the required level of observation. [1]
Why it matters Some opioids outlast naloxone, so respiratory depression can return.

What to look for next

Judge response by effective breathing and alertness, not saturation alone. Record repeated assessments and any repeat reversal treatment. The goal is safe ventilation; pain, withdrawal or agitation after reversal also needs clinical management.

Avoid this shortcut

Do not leave the patient to ‘sleep it off,’ delay support while searching for naloxone or assume one successful reversal dose ends the risk.

A clear way to hand it over

‘After opioid __ at __, hard to wake, RR 6 shallow, pulse present, saturation 96% on oxygen. Assisted breathing/emergency response started; naloxone and continued monitoring needed.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Respiratory depression: breathing becomes too slow or shallow. Naloxone: medicine that reverses opioid effects; its duration may be shorter than the opioid's.

Sources behind the actions 2 primary references

American Heart Association · 2025 Resuscitation Guidelines: special circumstances
Prioritize airway/ventilation in opioid respiratory emergencies, give naloxone and monitor for recurrent respiratory depression.
British Thoracic Society · Oxygen use in adults in healthcare and emergency settings
Targeted oxygen therapy, urgent blood gases for hypercapnia risk and oxygen during critical illness without unsafe withholding.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Transfusion emergency

A transfusion is followed by chills, pain and hypotension

Extremely difficult

The situation

Fifteen minutes into a red-cell transfusion, a patient develops rigors, back pain and a falling blood pressure. They say they feel suddenly unwell. The symptoms were absent before the transfusion. The bag and tubing are still attached, and a staff member suggests simply slowing the rate.

What should catch your attention

New symptoms during transfusion
Pain and rigors
Hypotension suggests a serious reaction

Your immediate priority

Stop this transfusion and activate the serious-reaction pathway immediately.

01New severe transfusion symptoms
02Stop + ABC support
03Blood bank + investigation

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Stop and assess
Stop the transfusion, call urgent help and assess airway, breathing and circulation. Monitor observations and provide emergency support as needed. [1]
Why it matters A severe reaction can worsen quickly if exposure continues.
2
Preserve safe access and evidence
Maintain IV access without flushing residual blood into the patient; use new tubing/access with compatible fluid as local policy directs. Recheck patient/component identity and retain the bag and giving set for investigation. [1]
Why it matters Treatment access is needed, and identity/equipment checks can identify a preventable incompatibility or other cause.
3
Notify the right teams
Inform the medical team and transfusion laboratory/blood bank. Send ordered samples and reaction documentation; support prescribed resuscitation and monitoring of renal function and urine. [1]
Why it matters Hemolysis, contamination and other serious reactions need different investigations and treatments.

What to look for next

Track symptoms, pressure, oxygenation and urine output continuously as directed. Do not restart this unit for the severe symptoms described here. Future transfusion decisions require the treating and transfusion teams' assessment.

Avoid this shortcut

Do not slow rather than stop a severe reaction, discard the evidence or call it a harmless fever before serious causes are excluded.

A clear way to hand it over

‘Serious suspected reaction 15 minutes into red cells: rigors, back pain and falling BP. Transfusion stopped, access maintained without residual blood flush; identity checks and blood-bank notification underway.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Rigors: intense shaking chills. Hemolysis: red blood cells break down. A transfusion reaction is not diagnosed from symptoms alone.

Sources behind the actions 1 primary references

Australian Red Cross Lifeblood · Management of suspected transfusion reactions
Stop a severe reaction, assess ABCs, retain IV access without flushing residual blood, verify identity and notify the medical/transfusion teams.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Possible pulmonary embolism

Sudden breathlessness after a period of immobility

Extremely difficult

The situation

A patient recovering from surgery suddenly becomes breathless, reports pain on breathing and has a pulse of 128/min. Saturation falls to 88% and they feel faint. They have moved very little for several days. A panic attack is suggested, but the patient has no previous similar episode.

What should catch your attention

Abrupt respiratory change
Tachycardia and low oxygen
Recent surgery and immobility

Your immediate priority

Activate emergency assessment; pulmonary embolism is one serious possibility, not a bedside certainty.

01Sudden dyspnea + clot risk
02ABC support + urgent team
03Diagnose → individualized treatment

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Support and escalate
Call the rapid-response/emergency team, stay with the patient, assess ABCs and support oxygenation. Avoid unnecessary walking; monitor circulation and alertness. [1]
Why it matters Acute respiratory and circulatory compromise needs stabilization before non-urgent investigations.
2
Give a focused history
Report onset, surgery, immobility, clot history, current prophylaxis and bleeding risks. Prepare for the ordered diagnostic pathway, which may include ECG, blood tests and chest imaging/CT pulmonary angiography. [1]
Why it matters Symptoms alone do not distinguish PE from other emergencies.
3
Support treatment decisions
Prepare prescribed anticoagulation or other emergency treatment and transfer as directed. Check bleeding risks and medication details; an unstable patient's treatment plan requires urgent senior input. [1]
Why it matters Preventing further clotting can help, but recent surgery changes the benefit–harm balance.

What to look for next

Trend breathing, saturation, pressure, pulse and consciousness. Fainting, falling pressure or collapse requires immediate escalation/resuscitation. A normal-looking chest or a previous prophylaxis dose does not rule out a new PE.

Avoid this shortcut

Do not use reassurance for presumed anxiety as the only response, massage a painful swollen leg or start anticoagulants independently.

A clear way to hand it over

‘Abrupt dyspnea and pleuritic pain after surgery/immobility, pulse 128 and saturation 88%. Emergency assessment requested; bleeding/prophylaxis history is __.’

Use your facility's handover format; fill in the actual findings and times.

In plain English PE: pulmonary embolism—a clot blocks blood flow in the lungs. Pleuritic pain: pain that worsens with breathing.

Sources behind the actions 2 primary references

NICE · NG158: Venous thromboembolic diseases—recommendations
Urgent PE diagnostic pathway, ordered anticoagulation and emergency management of hemodynamic instability.
British Thoracic Society · Oxygen use in adults in healthcare and emergency settings
Targeted oxygen therapy, urgent blood gases for hypercapnia risk and oxygen during critical illness without unsafe withholding.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Euglycemic DKA

Ketoacidosis despite a glucose that is not very high

Extremely difficult

The situation

A patient with type 2 diabetes takes an SGLT2 inhibitor. After poor intake during illness, they develop nausea, abdominal pain and deep rapid breathing. Glucose is 168 mg/dL (9.3 mmol/L), so someone says DKA is impossible. Blood ketones are 4.2 mmol/L and a venous gas shows pH 7.24 with bicarbonate 14 mmol/L.

What should catch your attention

SGLT2 medicine and acute illness
Ketones and metabolic acidosis
Modest glucose does not exclude DKA

Your immediate priority

Escalate a possible ketoacidosis emergency even without marked hyperglycemia.

01Illness + ketones + acidosis
02Do not dismiss modest glucose
03DKA protocol + electrolyte monitoring

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Recognize and report the pattern
Call urgent medical review, assess ABCs and report the SGLT2 medicine, intake, symptoms and results. Arrange the local DKA pathway and ordered electrolyte/renal testing. [1]
Why it matters SGLT2-associated DKA can occur with glucose below the usual high values.
2
Support protocol treatment safely
Administer prescribed fluids, insulin and dextrose as directed; escalate the SGLT2 medicine for withholding under the plan. Confirm potassium and replacement instructions before insulin starts. [1]
Why it matters Insulin treats ketone production, dextrose may be needed despite a modest starting glucose, and potassium can fall dangerously.
3
Monitor the whole emergency
Track glucose, ketones, acid-base results, electrolytes, urine and clinical status at the protocol intervals. Arrange higher-acuity care if the patient cannot be safely monitored on the ward. [1]
Why it matters Glucose recovery alone is not proof that ketoacidosis has resolved.

What to look for next

The team should confirm improving acidosis and ketones as well as circulation and symptoms. Report new hypoglycemia, low potassium, reduced consciousness or breathing deterioration immediately; follow the clinician's transition plan after resolution.

Avoid this shortcut

Do not dismiss DKA because glucose is below 200 mg/dL, stop insulin simply when glucose becomes normal or independently improvise an infusion.

A clear way to hand it over

‘SGLT2-treated patient with illness/poor intake, deep breathing, ketones 4.2, pH 7.24 and glucose 168. Possible euglycemic DKA; urgent protocol assessment needed.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Euglycemic DKA: ketoacidosis with glucose that is not markedly high. Acidosis: blood is too acidic. SGLT2 inhibitor: a diabetes/heart-kidney medicine class.

Sources behind the actions 2 primary references

ADA / EASD / JBDS / AACE / DTS · Hyperglycemic crises in adults with diabetes: 2024 consensus report
Euglycemic DKA, ketone/acid-base assessment, fluids/insulin/electrolytes, dextrose when needed and potassium safety before insulin.
American Diabetes Association · Diabetes Care in the Hospital: Standards of Care—2026
Nurse-initiated hospital hypoglycemia protocols, documentation, medication/meal review and prevention of recurrence.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Hyperkalemia emergency

A critical potassium result arrives with ECG changes

Extremely difficult

The situation

A patient with kidney disease has a potassium result of 6.8 mmol/L and new generalized weakness. Monitoring shows a widening QRS complex. The lab notes that another earlier sample was hemolyzed, so there is a temptation to assume this result is also false and wait for morning bloods.

What should catch your attention

Severe potassium elevation
New weakness
ECG change increases immediate concern

Your immediate priority

Escalate severe hyperkalemia with cardiac changes immediately while verifying the result in parallel.

01High potassium + ECG changes
02Urgent monitor + treatment
03Repeat potassium + glucose checks

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Get urgent help and monitoring
Activate the emergency pathway, obtain a 12-lead ECG and continuous monitoring, assess ABCs and confirm the result/patient identification. Arrange a repeat suitable sample without delaying indicated treatment. [1]
Why it matters Possible sample error does not safely explain away new cardiac abnormalities.
2
Support different treatment goals
Prepare ordered IV calcium when indicated for cardiac toxicity, potassium-shifting treatment and potassium-removal measures. Verify exact preparations/doses through the protocol and required checks. [1]
Why it matters Calcium may stabilize the heart's electrical response; it does not lower the potassium level.
3
Anticipate treatment risks
Monitor glucose repeatedly after insulin/glucose treatment, along with ECG and repeat potassium. Report renal function, medicines and fluid status; prepare dialysis assessment when required. [1]
Why it matters Potassium can rebound and treatment can cause delayed hypoglycemia.

What to look for next

Track the ECG, potassium and glucose for the full ordered monitoring period. Improved ECG alone does not mean potassium is controlled. Any arrhythmia, collapse or worsening weakness requires immediate emergency response.

Avoid this shortcut

Do not wait for a repeat test before escalating cardiac changes, give potassium-containing replacement blindly or assume calcium is definitive potassium removal.

A clear way to hand it over

‘Potassium 6.8 with new weakness and widening QRS. Emergency monitoring started. Repeat sample is being arranged alongside treatment; renal/medicine history is __.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Hyperkalemia: high blood potassium. QRS: part of the ECG that reflects electrical activation of the ventricles. Hemolyzed sample: red-cell damage may distort a lab result.

Sources behind the actions 2 primary references

UK Kidney Association · Management of hyperkalaemia in adults (updated July 2026)
Urgent ECG/monitoring, calcium for indicated cardiac toxicity, potassium-lowering treatment and glucose monitoring after insulin.
NICE · NG148: Acute kidney injury—recommendations
Recognize low urine output, compare creatinine with baseline, investigate causes and do not routinely treat AKI with loop diuretics.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Compartment syndrome

Severe limb pain after surgery despite a present pulse

Extremely difficult

The situation

After lower-leg fracture surgery, a patient reports rapidly worsening pain despite analgesia. The leg feels tense, gentle passive movement causes marked pain and the patient describes tingling. A foot pulse is still felt. The dressing is tight and the next routine neurovascular check is an hour away.

What should catch your attention

Pain out of proportion
Pain with passive movement
Tense limb and changing sensation

Your immediate priority

Seek immediate surgical assessment for possible acute compartment syndrome.

01Disproportionate pain + tense limb
02Urgent surgeon + serial checks
03Diagnosis → decompression

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Escalate the pattern now
Call the surgical/orthopedic team urgently and use the emergency escalation chain if review is delayed. Assess and time-stamp pain, sensation, motor function and circulation; report analgesia response. [1]
Why it matters Pressure inside a muscle compartment can threaten tissue before pulses disappear.
2
Reduce constriction safely
Follow the urgent local pathway for releasing restrictive circumferential dressings/casts with appropriately trained staff. Support and position the limb as the surgical protocol directs; do not delay review to try comfort measures alone. [1]
Why it matters External constriction may worsen pressure, but definitive diagnosis and management need urgent expertise.
3
Prepare for definitive treatment
Repeat and document neurovascular assessments as directed. Prepare for pressure measurement if needed and emergency surgery when the team diagnoses compartment syndrome. [1]
Why it matters Decompression, not extra analgesia alone, is the definitive treatment after diagnosis.

What to look for next

Report worsening pain, sensory or motor changes immediately. A present pulse or a temporary analgesic response cannot exclude the problem. Maintain close observation and a clear named surgical response until it is resolved or safely excluded.

Avoid this shortcut

Do not wait for all classic signs, missing pulses or the next routine round. Do not force repeated painful movement or cut a cast without the required training/pathway.

A clear way to hand it over

‘Escalating disproportionate pain after leg surgery, pain on passive movement, tense limb and tingling. Pulse present does not reassure us. Urgent compartment-syndrome review needed.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Compartment syndrome: pressure builds inside an enclosed muscle space and reduces tissue blood flow. Fasciotomy: surgery to release that pressure.

Sources behind the actions 1 primary references

British Orthopaedic Association · BOASt: Compartment syndrome of the extremities (revised July 2025)
Disproportionate pain, serial neurovascular assessment, release of constrictive dressings and immediate surgery after diagnosis.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

Major bleeding & shock

A gastrointestinal bleed with shock in an anticoagulated patient

Extremely difficult

The situation

A patient taking an anticoagulant vomits fresh blood, passes a black stool and becomes pale and confused. Blood pressure is 82/46 mmHg and pulse is 126/min. The medication name and last dose are not immediately clear. The patient wants water because their mouth feels dry.

What should catch your attention

Active blood loss
Confusion and hypotension
Anticoagulant details affect reversal

Your immediate priority

Activate major-bleeding/resuscitation support and protect the airway.

01Active bleed + shock
02ABC + major-bleeding response
03Resuscitate → stop the source

Decision pathway · a learning summary, not a substitute for the full clinical plan

What the RN should do—and why

1
Call and stabilize
Activate emergency help and the local major-hemorrhage pathway. Assess ABCs, protect the airway during vomiting, use oxygen when indicated and keep oral intake paused pending the urgent plan. [1]
Why it matters Shock and blood in the airway can become rapidly life-threatening.
2
Prepare resuscitation information
Arrange suitable IV access and ordered bloods/crossmatch. Quantify visible loss where possible, monitor closely and promptly identify the anticoagulant and last dose. [1]
Why it matters Blood-product and reversal decisions depend on the whole clinical picture, not a single hemoglobin value.
3
Support source control
Give prescribed fluids/blood products and any clinician-selected reversal treatment with the required checks. Prepare urgent specialist/endoscopy care after initial resuscitation and confirm the medication plan. [1]
Why it matters Restoring circulation and stopping the source are both needed; reversal is drug- and situation-specific.

What to look for next

Watch circulation, alertness, breathing and ongoing loss after each intervention. Keep escalating persistent shock. Check the explicit plan for holding/restarting anticoagulation later; bleeding control does not erase the original clot risk.

Avoid this shortcut

Do not wait for laboratory confirmation before responding to shock, offer oral drinks during the unstable episode or independently choose a reversal drug.

A clear way to hand it over

‘Active hematemesis with black stool, BP 82/46, pulse 126 and confusion. Anticoagulant __ last dose __. Major-bleeding response activated; urgent resuscitation and source-control review needed.’

Use your facility's handover format; fill in the actual findings and times.

In plain English Hematemesis: vomiting blood. Melena: black, tarry stool that can reflect digested blood. Crossmatch: blood-bank compatibility testing.

Sources behind the actions 2 primary references

NICE · CG141: Acute upper gastrointestinal bleeding—recommendations
Resuscitation, appropriate blood products, specialist reversal decisions and endoscopy after resuscitation in severe unstable bleeding.
Australian Red Cross Lifeblood · Management of suspected transfusion reactions
Stop a severe reaction, assess ABCs, retain IV access without flushing residual blood, verify identity and notify the medical/transfusion teams.

Links and relevant guidance checked October 7, 2026. Publication dates differ; local requirements may differ. These original cases do not imply endorsement by the source organizations.

Now connect the cues to clinical judgment.
Practise an NGN case · Access depends on your plan.

CONNECT UNDERSTANDING TO EXAM PRACTICE

The explanation is clear.
The exam asks you to choose.

Here, we explain the nursing response directly. In an NCLEX®-style question, several options may sound reasonable. You must weigh the cues, priority, timing and safety—not just recognize a familiar phrase.

Practise applying the reasoning, read why alternatives are less appropriate and review your decisions before exam day.

Build question-bank judgmentStudy by topic or system; review the rationale

Work through NGN casesConnect changing cues across a case

Explore standalone NGN itemsPractise decisions in different item formats

Rehearse a full mockPractise pacing and review your decisions

Try adaptive practiceA CAT-style learning simulator

For tutors & preceptors

Turn a scenario into a conversation.

Pause at the cues. Ask learners to identify the change from baseline and the immediate risk.
Explain the action. Ask what is independent nursing care and what requires a protocol or order.
Change one detail. Explore how unsafe swallowing, low pressure or kidney disease alters the plan.
Rehearse the handover. Compare with local policy, check the source and name what must be reassessed.

Explore the free teaching toolkit

General Medical–Surgical Ward

Dizzy on the first walk after surgery

What should catch your attention

What the RN should do—and why

Stop the walk

Check the cause

Plan the next attempt

What to look for next

Avoid this shortcut

A clear way to hand it over

A heel changes colour before the skin breaks

What should catch your attention

What the RN should do—and why

Look beyond redness

Remove the pressure

Make prevention specific

What to look for next

Avoid this shortcut

A clear way to hand it over

A peripheral IV becomes swollen and painful

What should catch your attention

What the RN should do—and why

Stop and inspect

Follow the correct pathway

Recognize the important exception

What to look for next

Avoid this shortcut

A clear way to hand it over

The allergy story does not match the medication chart

What should catch your attention

What the RN should do—and why

Clarify the history

Resolve it with the team

Make the information visible

What to look for next

Avoid this shortcut

A clear way to hand it over

A patient nods at discharge but cannot explain the plan

What should catch your attention

What the RN should do—and why

Make communication usable

Use teach-back

Close the gaps

What to look for next

Avoid this shortcut

A clear way to hand it over

A new wet voice while drinking after stroke

What should catch your attention

What the RN should do—and why

Protect breathing

Arrange a fresh assessment

Keep care going safely

What to look for next

Avoid this shortcut

A clear way to hand it over

Low glucose when the meal has not arrived

What should catch your attention

What the RN should do—and why

Treat now

Match the route to safety

Prevent a repeat

What to look for next

Avoid this shortcut

A clear way to hand it over

New watery diarrhea after antibiotics

What should catch your attention

What the RN should do—and why

Limit spread early

Assess and test appropriately

Use the full hygiene plan

What to look for next

Avoid this shortcut

A clear way to hand it over

The urinary catheter bag stays empty

What should catch your attention

What the RN should do—and why

Check the equipment

Check the patient

Use an authorized next step

What to look for next