Uncategorized - Nurses Revision

Glomerulonephritis: Recognition, Assessment and Emergency Management

Why this topic matters: Glomerulonephritis (GN) is inflammation or immune injury of the kidney’s glomeruli. It can present with haematuria, proteinuria, oedema, hypertension and acute kidney injury, and may be part of a life-threatening systemic disease such as vasculitis, lupus, anti-GBM disease or infection. Emergency providers must recognise nephritic features, identify pulmonary–renal and hypertensive emergencies, avoid nephrotoxins and arrange urgent nephrology referral.

Learning objectives

Explain the nephritic syndrome and common causes of glomerular inflammation.
Recognise haematuria, proteinuria, oedema, hypertension, AKI and systemic red flags.
Perform focused history, examination, urine assessment and emergency investigations.
Outline acute care for fluid overload, hyperkalaemia, severe hypertension, pulmonary haemorrhage and infection.
Plan nursing care, referral, patient education and follow-up.

Definition and clinical patterns

Glomerulonephritis is a group of disorders that damage the glomerular filtration barrier. Inflammation allows blood and protein to enter urine and reduces filtration. The term may describe a primary kidney disease or renal involvement in systemic illness.

Nephritic syndrome: haematuria, dysmorphic red cells or casts, variable proteinuria, reduced GFR, oliguria and hypertension.
Nephrotic features: heavy protein loss, low albumin, generalised oedema and hyperlipidaemia; some diseases have mixed nephritic-nephrotic features.
Rapidly progressive GN: rapidly declining kidney function over days to weeks, often with crescentic injury and urgent need for immunosuppressive specialist care.
Pulmonary–renal syndrome: GN with haemoptysis, pulmonary haemorrhage or hypoxaemia, commonly from ANCA vasculitis or anti-GBM disease.

Causes and triggers

Cause	Examples	Clues
Post-infectious	After streptococcal throat/skin infection or other bacterial infection.	Dark urine, oedema and hypertension after a latent period; low complement may occur.
IgA nephropathy	Immune deposits in glomeruli.	Haematuria during or soon after respiratory infection.
Autoimmune/immune-complex	Lupus nephritis, vasculitis, cryoglobulinaemia.	Rash, arthralgia, ulcers, fever, neuropathy or low complement.
Anti-GBM disease	Antibodies attack glomerular and alveolar basement membranes.	Haematuria plus haemoptysis, anaemia or rapidly progressive AKI.
Infection-associated	HIV, hepatitis, endocarditis, malaria and chronic infections.	Fever, weight loss, murmurs, rash or relevant exposure.
Drugs/malignancy	Selected medicines, cancer-associated immune disease.	New exposure, systemic symptoms or unexplained renal decline.

Emergency red flags

Breathlessness, crackles, hypoxia or frothy sputum suggesting pulmonary oedema or pulmonary haemorrhage.
Severe headache, visual changes, seizures, confusion or very high BP suggesting hypertensive encephalopathy.
Rapidly falling urine output, anuria, rising creatinine, hyperkalaemia or severe metabolic acidosis.
Haemoptysis, falling haemoglobin and hypoxia suggesting pulmonary–renal syndrome.
Fever, rigors, purpura, murmur or sepsis in an immunosuppressed patient.
Generalised oedema, painful skin, abdominal distension or sudden weight gain.

Triage and first contact

Move unstable patients to resuscitation, apply ECG/SpO₂/BP monitoring and call senior medical, renal and critical-care support.
Ask about urine colour/output, recent sore throat or skin infection, systemic symptoms, medicines, pregnancy, autoimmune disease and baseline kidney function.
Check ABCDE, glucose, fluid status, BP in both arms when appropriate, lungs, oedema, rash and neurological status.
Keep a strict fluid-balance record and avoid NSAIDs, contrast and other nephrotoxins unless specifically justified.
Arrange urgent referral for suspected rapidly progressive GN, pulmonary–renal syndrome, severe AKI or resistant hypertension.

Focused history and examination

Haematuria: visible or microscopic, cola/tea colour, clots, timing and recurrence.
Protein loss: frothy urine, oedema, weight gain, reduced urine and fatigue.
Systemic clues: rash, photosensitivity, joint pain, nasal ulcers, sinus disease, neuropathy, fever and weight loss.
Infection: recent sore throat/skin infection, HIV/hepatitis risk, endocarditis symptoms, malaria or TB exposure.
Pulmonary–renal symptoms: cough, haemoptysis, pleuritic pain, breathlessness and reduced exercise tolerance.
Examine BP, lungs, JVP, heart murmur, oedema, skin, joints, abdomen, urine, neurological status and fundi if trained.

Investigations

Investigation	Purpose	Key interpretation
Urinalysis/microscopy	Detect blood, protein, casts and infection.	Red-cell casts/dysmorphic cells support glomerular bleeding; quantify protein.
Creatinine, urea, electrolytes and bicarbonate	Assess filtration, AKI and complications.	Trend urgently; ECG and immediate treatment for hyperkalaemia.
FBC and haemolysis profile	Detect anaemia, inflammation and pulmonary haemorrhage.	Falling haemoglobin with haemoptysis is a critical red flag.
Complement, ANA, ANCA, anti-GBM and immunoglobulins	Identify immune-mediated cause.	Results guide specialist treatment but do not delay emergency stabilisation.
ASO/anti-DNase B, cultures, HIV/hepatitis/malaria tests	Assess post-infectious or infection-associated GN.	Interpret with timing and clinical context.
Ultrasound and renal biopsy	Assess size/obstruction and establish histology.	Biopsy is specialist-led; control BP/coagulation first.
Chest imaging and blood gas	Evaluate pulmonary oedema, haemorrhage and respiratory failure.	Urgent imaging for haemoptysis, hypoxia or severe breathlessness.

Initial supportive management

Position upright for pulmonary oedema, give oxygen for hypoxaemia and prepare non-invasive/invasive ventilation if respiratory failure develops.
Restrict sodium and fluid according to volume status and prescription; avoid indiscriminate fluid boluses in oedema.
Use prescribed diuretics for clinically significant overload while arranging renal review; monitor response and electrolytes.
Treat sepsis promptly, choosing renal-adjusted antimicrobials and avoiding nephrotoxins.
Control severe hypertension gradually according to the emergency pathway; prevent encephalopathy, heart failure and further kidney injury.
Manage hyperkalaemia, acidosis, uraemia and other AKI complications immediately.

Pulmonary–renal syndrome

GN with pulmonary haemorrhage may deteriorate rapidly. Haemoptysis can be absent, especially when bleeding is diffuse. Suspect it when a patient has falling haemoglobin, hypoxia, diffuse infiltrates and active urinary sediment.

ABCDE, oxygenation/ventilation and urgent critical-care review.
Check FBC trend, coagulation, renal profile, urinalysis, blood gas and chest imaging.
Call nephrology, respiratory and rheumatology teams; arrange anti-GBM/ANCA testing without delaying life-saving treatment.
Prepare for immunosuppression and plasma exchange only under specialist direction after infection and bleeding risks are assessed.
Monitor for airway flooding, shock, anaemia and rapid renal deterioration.

Rapidly progressive GN and severe AKI

Urgent renal referral is required for a rapid creatinine rise, oliguria, active sediment, systemic vasculitis signs or pulmonary involvement.
Record baseline and serial creatinine, urine output, potassium, bicarbonate, BP and weight.
Prepare for renal biopsy and specialist immunosuppressive therapy; do not self-start steroids without senior direction.
Discuss dialysis early when hyperkalaemia, acidosis, pulmonary oedema, uraemia or anuria is not responding to medical care.

Nursing interventions and monitoring

Monitor BP, pulse, RR, SpO₂, temperature, neurological state, lung sounds, oedema and daily weight.
Measure urine output accurately and document colour, sediment and fluid balance.
Administer antihypertensives, diuretics, antibiotics and immunosuppressive medicines exactly as prescribed; monitor adverse effects.
Maintain infection precautions for immunosuppressed patients and report fever promptly.
Use pressure-area care, nutrition support and psychosocial support during prolonged admission.
Communicate new haematuria, oliguria, rising BP, dyspnoea, haemoptysis, confusion or ECG changes immediately.

Complications

Complication	Signs	Response
AKI/hyperkalaemia	Oliguria, weakness, ECG changes, acidosis or rising creatinine.	Emergency renal/electrolyte pathway and dialysis assessment.
Pulmonary oedema	Crackles, orthopnoea, hypoxia, frothy sputum and hypertension.	Upright, oxygen/ventilation, diuresis and renal/critical-care review.
Pulmonary haemorrhage	Haemoptysis, falling haemoglobin, infiltrates and severe hypoxia.	Airway/critical care, blood products and specialist immune therapy.
Hypertensive encephalopathy	Headache, visual symptoms, seizure, confusion or very high BP.	Controlled IV BP management and neurocritical-care assessment.
Thromboembolism/infection	Oedema, chest pain, fever or immunosuppression.	Risk assessment, cultures/imaging and prophylaxis/treatment as prescribed.

Discharge, prevention and follow-up

Teach patients to monitor BP when possible, report dark urine, reduced urine, swelling, breathlessness or severe headache.
Complete antibiotics for infection-associated GN and attend renal follow-up and repeat urine/creatinine testing.
Avoid NSAIDs, unregulated remedies and dehydration; check all new medicines with a clinician.
Discuss salt restriction, prescribed fluid limit, smoking cessation, pregnancy planning and vaccination before immunosuppression.
Provide a written emergency plan and confirm access to renal, laboratory and specialist services.

Clinical scenarios

Scenario 1 – Post-infectious nephritis: A child develops cola-coloured urine, periorbital oedema and headache two weeks after a sore throat. Check BP, urine, renal function and fluid status; assess for pulmonary oedema and refer for paediatric/renal review.

Scenario 2 – Pulmonary–renal syndrome: An adult with haemoptysis, anaemia, hypertension, haematuria and rising creatinine becomes hypoxic. Treat ABCDE, oxygenate, arrange urgent imaging and renal/respiratory review; do not delay specialist therapy while awaiting every antibody result.

Scenario 3 – Severe hypertension: A patient with GN has headache, visual changes and a seizure. Treat as hypertensive encephalopathy, protect airway, control BP under protocol and arrange neuro-renal critical care.

Common errors to avoid

Assuming visible haematuria is a urinary infection without urine microscopy and renal assessment.
Giving large fluid volumes to an oedematous patient.
Delaying renal referral in rapidly progressive disease or pulmonary–renal syndrome.
Starting immunosuppression without infection assessment and specialist direction.
Missing severe hypertension, hyperkalaemia or pulmonary oedema.
Failing to ask about recent infections, NSAIDs, herbal medicines and systemic symptoms.

GN RAPID: G – Glomerular blood/protein; N – Note BP and nephritic signs; R – Renal function/urine trend; A – Assess lungs and oedema; P – Pulmonary–renal red flags; I – Immunology/infection tests; D – Discuss urgently with nephrology.

Revision questions

What findings make a urine abnormality glomerular rather than lower urinary tract?
Differentiate nephritic and nephrotic patterns.
List emergency complications of glomerulonephritis.
What is pulmonary–renal syndrome and how would you recognise it?
Which investigations help identify immune-mediated GN?
Why must severe hypertension and fluid overload be treated urgently?
Write a nursing care plan for a patient with acute GN and oliguria.

Key takeaways

Haematuria, proteinuria, oedema and hypertension should prompt renal assessment.
Rapidly progressive GN and pulmonary–renal syndrome are emergencies.
Monitor BP, urine output, creatinine, potassium, fluid status and respiratory function closely.
Supportive treatment and specialist immune therapy must be coordinated with nephrology.
Early referral prevents avoidable kidney failure and pulmonary complications.

References for further study

Glomerulonephritis: Recognition, Assessment and Emergency Management Read More »

Nephrotoxins: Drug-Induced Kidney Injury, Recognition and Prevention

Why this topic matters: Nephrotoxins are medicines, chemicals or biological substances that injure the kidneys or reduce renal perfusion. Drug-induced kidney injury may be missed because the patient initially feels well and creatinine rises after the exposure. EMTs and emergency staff reduce harm by taking a complete medication and herbal history, checking volume status, identifying high-risk combinations, monitoring urine and electrolytes, stopping avoidable exposure and escalating early.

Learning objectives

Define nephrotoxicity and explain common mechanisms of kidney injury.
Recognise patients at increased risk and identify common drug and chemical exposures.
Perform an emergency assessment for AKI, hyperkalaemia, acidosis, fluid overload and obstruction.
Describe prevention, dose adjustment, monitoring, decontamination and renal referral.
Plan nursing interventions, patient education and safe follow-up.

What is nephrotoxicity?

Nephrotoxicity is kidney injury caused by a medicine, toxin or chemical. A substance may directly damage tubular cells, trigger interstitial inflammation, cause glomerular injury, reduce renal blood flow, precipitate crystals or produce obstruction. Injury is more likely when several risks combine: dehydration, sepsis, hypotension, older age, diabetes, CKD, heart failure, pregnancy, high dose, prolonged treatment or multiple nephrotoxic medicines.

Nephrotoxicity may present as rising creatinine, falling urine output, haematuria, proteinuria, electrolyte disturbance, oedema, hypertension, rash or systemic toxicity. It can coexist with sepsis, shock and obstruction; never assume that stopping one medicine is sufficient without treating the underlying physiology.

Common nephrotoxic exposures

Exposure	Mechanism/pattern	Emergency precautions
NSAIDs	Reduce renal prostaglandin-mediated blood flow; risk rises with dehydration, CKD, ACE inhibitor/ARB and diuretic use.	Review over-the-counter use, stop avoidable exposure and assess perfusion/creatinine.
Aminoglycosides/vancomycin	Tubular injury, especially with high troughs, prolonged therapy or other nephrotoxins.	Therapeutic drug monitoring and renal dose adjustment.
Amphotericin and selected antivirals	Tubular toxicity, electrolyte wasting or crystal injury.	Monitor renal function, potassium, magnesium and hydration plan.
ACE inhibitors/ARBs and diuretics	Can reduce filtration during hypovolaemia or renal artery disease; potassium may rise.	Review during acute illness under prescriber guidance; never stop essential medicines without a plan.
Iodinated contrast	Risk is higher with CKD, AKI, diabetes, dehydration and repeated exposure.	Assess risk and hydrate appropriately; do not delay lifesaving imaging.
Herbal/traditional medicines and heavy metals	Unknown ingredients, contamination, direct toxicity or adulterated drugs.	Ask non-judgmentally, preserve packaging/sample and notify toxicology/public health when needed.
Chemotherapy and immunosuppressants	Tubular, glomerular or vascular injury; tumour lysis may cause AKI.	Follow oncology protocol, monitor urate/electrolytes and involve renal services.

Risk factors and high-risk combinations

Pre-existing CKD, a single kidney, renal transplant, diabetes, heart failure, liver disease or older age.
Dehydration from diarrhoea, vomiting, fever, fasting, burns or poor access to water.
Sepsis, hypotension, haemorrhage, major surgery, trauma, rhabdomyolysis or pregnancy complications.
“Triple whammy” exposure: NSAID plus ACE inhibitor/ARB plus diuretic during volume depletion.
Multiple antimicrobials, contrast repeated within a short interval or unmonitored high-dose medicines.
Unclear medicines from multiple clinics, self-medication, herbal mixtures or contaminated products.

First-contact assessment

Bring the patient to a monitored area if hypotensive, oliguric, breathless, confused, hyperkalaemic or systemically toxic.
Ask what was taken, dose, timing, route, treatment course, last normal dose, co-medications, herbal products and possible overdose.
Establish baseline creatinine, urine output, body weight, dialysis status and allergies.
Check ABCDE, glucose, ECG, perfusion, fluid status, lungs, oedema, rash, bladder and catheter function.
Stop further avoidable exposure and call senior, renal, pharmacy or toxicology support early.

ABCDE and emergency complications

Threat	Clues	Immediate response
Hyperkalaemia	Weakness, paraesthesia, peaked T waves, broad QRS or arrhythmia.	ECG, hyperkalaemia protocol, stop potassium sources and prepare renal replacement if refractory.
Pulmonary oedema	Dyspnoea, orthopnoea, crackles, hypoxia, oedema or weight gain.	Upright position, oxygen/ventilation, fluid review, diuretic/dialysis assessment.
Acidosis/uraemia	Kussmaul breathing, confusion, asterixis, nausea, pericarditis or bleeding.	Blood gas, renal/critical-care review and treat cause; consider dialysis.
Shock/volume depletion	Hypotension, tachycardia, dry mucosa, cold peripheries or low urine.	Carefully reassessed isotonic fluid, sepsis/bleeding treatment and avoid nephrotoxin continuation.
Anaphylaxis/toxin syndrome	Rash, bronchospasm, bradycardia, secretions, altered state or seizures.	Emergency resuscitation and poison-specific protocol; protect airway.

Investigations and monitoring

Serial creatinine, urea, eGFR, potassium, sodium, bicarbonate, calcium, phosphate and magnesium.
Urinalysis, microscopy, culture, urine protein and specific gravity when appropriate.
FBC, blood gas, glucose, CK, liver tests, inflammatory markers, cultures and lactate according to presentation.
ECG for potassium risk and continuous monitoring when arrhythmia or severe electrolyte abnormality is possible.
Ultrasound for obstruction, bladder retention, renal size and alternative pathology.
Drug concentrations when available, including selected aminoglycosides, vancomycin, lithium, digoxin or anticonvulsants.
Accurate urine output, daily weight, fluid balance and medicine administration time.

Immediate treatment principles

Stop or withhold the suspected nephrotoxin when clinically safe and document the decision.
Correct dehydration or shock with carefully reassessed isotonic fluid; avoid fluid overload in CKD/heart failure.
Treat sepsis, obstruction, rhabdomyolysis, hyperkalaemia, acidosis and other contributors immediately.
Adjust all renally cleared medicines using current renal function and pharmacy/renal advice.
Do not use loop diuretics to force urine production in a euvolaemic patient; reserve for clinically important overload under prescription.
Discuss urgent dialysis for refractory potassium/acidosis, pulmonary oedema, uraemic complications or a dialysable toxin.

Contrast-associated risk

Identify AKI, CKD, diabetes, dehydration, heart failure, age and recent contrast exposure before elective contrast.
Use the lowest appropriate contrast dose and avoid unnecessary repeat exposure.
Do not delay emergency CT/angiography when the diagnostic benefit is lifesaving; communicate risk and protect renal perfusion.
Use an appropriate hydration plan, avoid concurrent nephrotoxins and repeat renal tests in high-risk patients.

Antimicrobials and dose adjustment

Antibiotics can be lifesaving, and fear of nephrotoxicity must not cause undertreatment of sepsis. The safer approach is timely culture-guided therapy, renal dose adjustment, therapeutic monitoring where available, avoidance of unnecessary combinations and daily review for de-escalation.

Record weight, baseline renal function, dose, interval, start time and indication.
Review aminoglycoside and vancomycin levels according to local protocol.
Use pharmacy/renal input for dialysis patients and changing renal function.
Monitor rash, fever, eosinophilia, haematuria and proteinuria for interstitial or glomerular injury.

Overdose and toxic exposure

Protect staff and patient, remove contaminated clothing when appropriate and follow decontamination guidance.
Bring packaging, prescriptions, herbal products or containers; record time and estimated dose.
Support airway, breathing, circulation, glucose, temperature and seizures before focusing on the toxin.
Call a poison centre/toxicology service and determine whether an antidote, enhanced elimination or dialysis is indicated.
Monitor for delayed kidney injury after apparently stable poisoning; arrange repeat creatinine and urine review.

Nursing interventions

Complete medicine reconciliation, including non-prescription and traditional products, at every transition of care.
Measure urine output accurately and report oliguria/anuria promptly.
Monitor BP, ECG, respiratory status, fluid balance, daily weight, oedema, mental state and pain.
Check every administration against renal dose, allergy, interaction and monitoring requirements.
Maintain IV and catheter asepsis, protect skin and prepare safely for dialysis access if required.
Teach patients to report reduced urine, swelling, breathlessness, muscle weakness, palpitations, vomiting or confusion.

Complications

Complication	What to watch for	Escalation
Acute kidney injury	Rising creatinine, oliguria, haematuria, proteinuria or oedema.	Stop avoidable exposure, investigate cause and involve renal team.
Electrolyte dysregulation	Weakness, ECG changes, cramps, confusion or seizures.	Urgent ECG/electrolyte treatment and repeat monitoring.
Fluid overload	Hypoxia, crackles, pulmonary oedema or hypertension.	Fluid restriction, respiratory support and diuretic/dialysis review.
Interstitial nephritis	Fever, rash, eosinophilia, haematuria or creatinine rise after medicine.	Stop culprit, renal review and specialist treatment.
Dialysis need	Refractory acidosis, potassium, overload, uraemia or dialysable toxin.	Urgent renal replacement consultation.

Prevention and safety systems

Use electronic or paper alerts for CKD, previous AKI, allergies and high-risk medicines.
Check renal function before and during nephrotoxic treatment; document a monitoring plan.
Use weight-based dosing and current creatinine clearance/eGFR, recognising that rapidly changing AKI makes estimates imperfect.
Avoid duplicate NSAIDs, unregulated mixtures and unnecessary contrast.
Educate patients to show their medicine list to every provider and to seek help early during vomiting, diarrhoea, fever or reduced urine.

Clinical scenarios

Scenario 1 – NSAID and dehydration: A patient with diarrhoea has taken repeated ibuprofen and now passes little urine. Stop further NSAIDs, assess perfusion, check creatinine/potassium and give carefully reassessed fluid if hypovolaemic.

Scenario 2 – Antibiotic toxicity: A patient receiving gentamicin becomes oliguric with rising creatinine. Hold further doses pending senior/pharmacy review, check levels where available, treat sepsis, monitor electrolytes and involve renal services.

Scenario 3 – Herbal mixture: A young adult develops vomiting, weakness and AKI after an unknown herbal preparation. Stabilise ABCDE, preserve the product, call toxicology/public health, monitor potassium/acidosis and prepare dialysis discussion if needed.

Common errors to avoid

Asking only about prescribed medicines and missing NSAIDs, herbs and supplements.
Continuing nephrotoxins automatically after creatinine or urine output changes.
Giving large fluids without checking lung findings or heart failure.
Delaying treatment of sepsis because an antibiotic has renal risks.
Failing to monitor potassium, magnesium, ECG and urine output.
Using creatinine alone and ignoring baseline, trend and clinical volume status.
Discharging without dose-adjusted prescriptions and repeat renal follow-up.

KIDNEY SAFE: K – Know baseline renal function; I – Identify every exposure; D – Dose-adjust; N – Note urine trend; E – ECG/electrolytes; Y – Yield to renal/toxicology advice; S – Stop avoidable toxins; A – Assess volume; F – Follow creatinine; E – Educate.

Revision questions

What mechanisms allow medicines to cause kidney injury?
List common nephrotoxic medicines and risk combinations.
How should an EMT assess a patient with suspected drug-induced AKI?
Why should emergency contrast imaging not automatically be withheld?
What monitoring is needed for aminoglycosides or vancomycin?
When should renal replacement therapy be discussed?
Write a prevention plan for a patient discharged after nephrotoxic AKI.

Key takeaways

Nephrotoxicity is often preventable through medication reconciliation and monitoring.
Dehydration, sepsis, CKD and combinations magnify drug-related risk.
Stop avoidable exposure, dose-adjust essential medicines and treat the underlying emergency.
Monitor urine output, creatinine, potassium, acid-base status and ECG.
Early renal/pharmacy/toxicology involvement prevents avoidable deterioration.

References for further study

Nephrotoxins: Drug-Induced Kidney Injury, Recognition and Prevention Read More »

Acute Renal Failure (Acute Kidney Injury): Emergency Assessment and Management

Why this topic matters: Acute kidney injury (AKI), historically called acute renal failure, is a sudden decline in kidney filtration over hours to days. It may be reversible, but untreated AKI can cause hyperkalaemia, metabolic acidosis, pulmonary oedema, uraemic encephalopathy, bleeding and death. Emergency providers must find reversible causes, assess volume carefully, stop nephrotoxins, monitor urine output and electrolytes, and involve renal/critical-care teams before complications become irreversible.

Learning objectives

Define AKI and classify pre-renal, intrinsic renal and post-renal causes.
Recognise oliguria, anuria, uraemia, hyperkalaemia, acidosis and fluid overload.
Perform ABCDE, fluid-status assessment, medication review and focused renal history.
Describe investigations, emergency treatment and indications for renal replacement therapy.
Plan nursing monitoring, prevention, referral, discharge education and follow-up.

Definition and pathophysiology

AKI is an abrupt reduction in kidney function, reflected by a rising serum creatinine, reduced urine output or both. The kidneys lose the ability to regulate water, electrolytes, acid-base balance and waste excretion. A patient may have severe AKI with few symptoms, so comparison with baseline creatinine and accurate urine measurement are essential.

Pre-renal AKI results from reduced renal perfusion such as haemorrhage, dehydration, sepsis, burns or heart failure. Intrinsic AKI involves the kidney tissue, including acute tubular injury, glomerulonephritis, interstitial nephritis, rhabdomyolysis or nephrotoxins. Post-renal AKI is obstruction from stones, prostate disease, clots, tumours, pregnancy or blocked catheters.

Safety point: Do not assume that reduced urine always means dehydration. Sepsis, obstruction, nephrotoxins and intrinsic renal disease may coexist. Give fluids only after a clinical volume assessment and reassessment of lungs, perfusion, BP and urine output.

Common causes and risk factors

Category	Examples	Clues
Reduced perfusion	Vomiting/diarrhoea, haemorrhage, burns, sepsis, shock, heart failure.	Hypotension, tachycardia, dry mucosa, low JVP or poor capillary refill.
Nephrotoxins	NSAIDs, aminoglycosides, contrast, amphotericin, some antivirals, herbal remedies and toxins.	Recent medicine or contrast exposure; rising creatinine after treatment.
Intrinsic renal disease	Glomerulonephritis, interstitial nephritis, tubular injury, vasculitis and rhabdomyolysis.	Haematuria/proteinuria, rash, eosinophilia, oedema or dark urine.
Obstruction	Stones, enlarged prostate, tumours, clots, pregnancy or blocked catheter.	Colicky pain, anuria, palpable bladder, hydronephrosis or poor catheter drainage.
High-risk patients	CKD, diabetes, hypertension, older age, pregnancy, children and major surgery.	Low renal reserve and higher risk from small physiological insults.

Triage and first contact

Move unstable patients to resuscitation and call senior emergency, renal and critical-care support.
Ask about urine output, baseline kidney function, fluid loss, fever, pain, obstruction, medicines, pregnancy and recent procedures/contrast.
Check for life-threatening hyperkalaemia, pulmonary oedema, severe acidosis, shock, uraemic encephalopathy and toxin exposure.
Obtain IV access, continuous ECG for electrolyte risk and accurate urine measurement.
Review all medicines immediately and withhold or dose-adjust nephrotoxic/renally cleared drugs under senior/pharmacy guidance.

ABCDE assessment

Step	Assess	Actions
A – Airway	Consciousness, uraemic vomiting, aspiration and seizures.	Position, suction and airway support when protective reflexes fail.
B – Breathing	Crackles, oxygenation, pulmonary oedema, Kussmaul breathing and acidosis.	Oxygen for hypoxaemia, ventilatory support and urgent fluid/renal review.
C – Circulation	BP, pulse, perfusion, dehydration, oedema, JVP and bleeding.	Careful fluid challenge if hypovolaemic; avoid overload and treat shock source.
D – Disability	Glucose, confusion, asterixis, seizures, headache and uraemic encephalopathy.	Check glucose/electrolytes; call renal/critical care for neurological deterioration.
E – Exposure	Rash, vasculitis, oedema, bruising, flank pain, catheter and abdominal/bladder findings.	Look for cause, prevent pressure injury and preserve dignity.

History and examination

Baseline creatinine/eGFR, previous CKD, dialysis access, transplant and renal specialist contact.
Fluid intake/losses, diarrhoea, vomiting, bleeding, fever, sepsis, burns, surgery, trauma and heart failure.
Urine volume, colour, froth, blood, pain, hesitancy, retention, stones and catheter history.
All medicines, over-the-counter NSAIDs, herbal products, contrast, antibiotics and recent dose changes.
Pregnancy/postpartum status, autoimmune symptoms, rash, joint pain, cough/haemoptysis and family renal disease.
Examine volume status, lungs, heart, abdomen, bladder, skin, joints, oedema, rash, pupils and mental status.

Investigations

Test	Purpose	Clinical action
Urea, creatinine and eGFR	Confirm and stage kidney deterioration.	Compare with baseline and trend daily or more often when unstable.
Electrolytes, bicarbonate, calcium, phosphate and magnesium	Detect hyperkalaemia, acidosis and mineral abnormalities.	ECG and immediate treatment for dangerous potassium/acid-base changes.
Urinalysis and microscopy	Look for blood, protein, casts, infection and specific gravity.	Glomerular findings need renal referral; culture suspected infection.
FBC, CRP, cultures and lactate	Find sepsis, anaemia, inflammation and hypoperfusion.	Sepsis treatment should not be delayed; adjust antibiotic doses for renal function.
Ultrasound urinary tract	Identify hydronephrosis, obstruction, kidney size and bladder retention.	Urgent urology review for infected obstruction or bilateral obstruction.
CK, blood film, autoimmune/serology tests	Investigate rhabdomyolysis, haemolysis, vasculitis, GN or systemic disease.	Specialist-directed; do not delay management of hyperkalaemia or shock.

Fluid and haemodynamic management

Determine whether the patient is hypovolaemic, euvolaemic or fluid overloaded using history, perfusion, lungs, JVP, oedema, weight and response to a small test bolus.
If hypovolaemic, give appropriate isotonic fluid and reassess BP, pulse, capillary refill, lungs and urine output after each bolus.
If septic, treat infection and perfusion promptly while avoiding both under-resuscitation and pulmonary oedema.
If fluid overloaded, restrict further fluid according to prescription, sit upright, provide oxygen/ventilatory support and involve renal/critical care.
Loop diuretics may treat symptomatic fluid overload but do not cure intrinsic AKI or replace dialysis when emergency indications persist.
Maintain accurate input/output, daily weight and prescribed fluid allowance.

Hyperkalaemia and acidosis

Obtain an urgent ECG and repeat potassium to exclude haemolysis, but treat life-threatening ECG changes immediately.
Call senior/renal/critical-care support. Stabilise the myocardium, shift potassium intracellularly and remove potassium according to the local hyperkalaemia protocol.
Stop potassium-containing fluids, potassium supplements, ACE inhibitors/ARBs, potassium-sparing diuretics and other contributors under prescriber guidance.
Monitor glucose, ECG and repeat potassium because rebound hyperkalaemia is possible.
Severe refractory hyperkalaemia, severe metabolic acidosis or arrhythmia may require urgent renal replacement therapy.

Obstruction and nephrotoxins

Check catheter patency, bladder volume and ultrasound when output falls unexpectedly.
Urgently refer infected obstruction, anuria, bilateral obstruction or obstruction in a solitary kidney to urology.
Stop or adjust nephrotoxic medicines and renally cleared drugs with a pharmacist/renal clinician.
Do not delay emergency contrast imaging when it is essential; assess risk, hydrate appropriately and avoid repeated unnecessary contrast.
Ask about traditional/herbal remedies and unknown tablets, which may be important causes in the local setting.

Indications for renal replacement therapy

Dialysis or continuous renal replacement therapy is considered when complications cannot be controlled medically. Use the clinical picture, trends and specialist decision rather than a creatinine number alone.

Refractory Acidosis causing instability.
Dangerous Electrolyte abnormality, especially persistent hyperkalaemia.
Dialysable Intoxication when the toxin and clinical criteria require it.
Fluid Overload causing pulmonary oedema despite medical treatment.
Uraemic complications such as encephalopathy, pericarditis, bleeding or severe symptoms.
Use the AEIOU principle, but remember that access, haemodynamics, resources and patient goals determine the modality.

Nursing interventions and monitoring

Measure urine output accurately, including catheter hourly output when unstable; document anuria/oliguria promptly.
Maintain fluid-balance chart, daily weight, oedema assessment, lung auscultation and prescribed fluid restriction.
Repeat BP, pulse, respiratory rate, SpO₂, ECG, mental state, potassium, bicarbonate and creatinine at the required frequency.
Use aseptic catheter care and avoid unnecessary urinary catheterisation.
Check every medicine for renal dose adjustment, nephrotoxicity and potassium effect.
Protect skin, maintain nutrition, manage pruritus/uraemic symptoms and prepare the patient for dialysis access/procedure.
Escalate falling urine output, arrhythmia, breathlessness, chest pain, confusion, seizure or bleeding immediately.

Special populations

Pregnancy: consider pre-eclampsia, haemorrhage, sepsis and thrombotic microangiopathy; involve obstetrics and renal services early.
Children: assess weight-based fluid needs carefully, congenital urinary disease and dehydration; avoid adult assumptions.
Older adults: creatinine may appear modest despite low renal reserve; use baseline trend and clinical status.
Heart failure: fluid resuscitation is high-risk; use small reassessed boluses, ultrasound/echo and critical-care input.
Sepsis: AKI may be an early marker of organ dysfunction; antibiotics and source control must be timely.

Complications

Complication	Clues	Response
Hyperkalaemia	Weakness, paresthesia, peaked T waves, broad QRS or arrhythmia.	ECG, immediate hyperkalaemia protocol and renal/critical-care review.
Pulmonary oedema	Dyspnoea, orthopnoea, crackles, hypoxia and rapid weight gain.	Upright position, oxygen/ventilation, fluid restriction, diuretic/dialysis review.
Metabolic acidosis	Kussmaul breathing, confusion, hypotension and low bicarbonate.	Blood gas, treat cause and consider renal replacement if refractory.
Uraemic encephalopathy/pericarditis	Confusion, asterixis, seizures, chest pain or friction rub.	Urgent renal/critical-care review and dialysis assessment.
Bleeding/infection	Bruising, GI bleeding, fever, catheter infection or sepsis.	Source control, cultures, antibiotics and specialist management.

Prevention, discharge and follow-up

Drink appropriately during illness, seek early help for vomiting/diarrhoea and avoid unsupervised NSAIDs or herbal medicines.
Tell every healthcare provider about previous AKI, CKD, allergies and current medicines.
Use sick-day medication advice only under a clinician’s written plan; do not stop essential medicines without guidance.
Repeat creatinine/electrolytes after discharge and arrange renal review for severe, recurrent, unexplained or incomplete recovery.
Teach red flags: reduced urine, swelling, breathlessness, weakness/palpitations, persistent vomiting, confusion or chest pain.

Clinical scenarios

Scenario 1 – Septic AKI: A patient with pneumonia is hypotensive and passes very little urine. Start ABCDE/sepsis care, obtain cultures, give carefully reassessed fluids, antibiotics and monitor lactate/urine output; involve critical care early.

Scenario 2 – Hyperkalaemia: A dialysis patient has weakness and a broad QRS. Attach ECG, call for help, treat life-threatening potassium toxicity immediately under protocol and prepare urgent renal replacement therapy.

Scenario 3 – Obstruction: An older man has anuria, suprapubic discomfort and a palpable bladder. Check catheter/bladder, decompress under local guidance, ultrasound for obstruction and arrange urgent urology review.

Common errors to avoid

Assuming AKI is present only when the patient reports pain or reduced urine.
Giving repeated large fluid boluses without checking lungs and perfusion.
Ignoring medicines, herbal products and contrast exposure.
Waiting for laboratory confirmation before treating ECG-proven hyperkalaemia.
Using diuretics to “fix” intrinsic AKI without addressing overload or dialysis indications.
Failing to investigate obstruction or to record accurate urine output.
Discharging without repeat renal tests, medication review and safety-netting.

AKI CARE: A – Assess volume and ABCDE; K – Keep ECG/glucose/electrolytes monitored; I – Identify cause and nephrotoxins; C – Correct shock, potassium and acidosis; A – Assess obstruction; R – Renal replacement when indicated; E – Educate and follow up.

Revision questions

Differentiate pre-renal, intrinsic and post-renal AKI with examples.
What clinical findings suggest fluid overload rather than dehydration?
List the immediate actions for ECG changes caused by hyperkalaemia.
What does the AEIOU dialysis mnemonic represent?
Why is urine output trend important even before creatinine returns?
Which medicines and exposures can worsen AKI?
Write a nursing monitoring plan for a critically ill patient with AKI.

Key takeaways

AKI can be silent, reversible and life-threatening.
Assess perfusion and volume carefully; treat sepsis, obstruction and nephrotoxins promptly.
Hyperkalaemia, acidosis, pulmonary oedema and uraemic complications need urgent escalation.
Accurate urine output, medication review, ECG and electrolyte trends guide safe care.
Dialysis decisions are clinical and specialist-led, not based on creatinine alone.

References for further study

Acute Renal Failure (Acute Kidney Injury): Emergency Assessment and Management Read More »

Subarachnoid Haemorrhage: Thunderclap Headache, Emergency Assessment and Management

Why this topic matters: Subarachnoid haemorrhage (SAH) is bleeding into the space around the brain, often from a ruptured aneurysm. It can present with a sudden “worst-ever” headache, collapse, vomiting, neck stiffness, seizure or focal deficit. Rebleeding, hydrocephalus, vasospasm/delayed cerebral ischaemia, seizures and cardiopulmonary complications can cause rapid deterioration. Treat thunderclap headache as a neurological emergency, document exact onset, stabilise ABCDE, obtain urgent brain imaging and transfer to neurosurgical/stroke expertise.

Learning objectives

Recognise aneurysmal and non-aneurysmal SAH, including atypical and sentinel presentations.
Perform an ABCDE and focused neurological examination while protecting cerebral perfusion.
Describe CT, vascular imaging and lumbar-puncture pathways and their safety precautions.
Outline early treatment, aneurysm securing, seizure care, hydrocephalus management and vasospasm surveillance.
Plan nursing care, communication, transfer, rehabilitation and secondary prevention.

Definition and causes

SAH is extravasation of blood into the subarachnoid space. Aneurysmal SAH commonly involves rupture of a saccular intracranial aneurysm; other causes include arteriovenous malformation, head trauma, vascular dissection, coagulopathy and illicit stimulant use. The initial bleed can cause abrupt intracranial pressure rise, loss of consciousness, meningism and secondary brain injury.

After the first event, rebleeding is a major early danger. Blood products can impair cerebrospinal-fluid circulation and cause acute hydrocephalus. Days later, arterial narrowing and delayed cerebral ischaemia may produce new deficits or reduced consciousness. SAH can also trigger neurogenic stunned myocardium, arrhythmia, pulmonary oedema, seizures, electrolyte disturbance and fever.

Safety point: A patient may describe a thunderclap headache as “migraine,” and neurological examination may initially be normal. A sudden maximal-at-onset headache, exertional headache, headache with collapse or new neck stiffness requires urgent assessment and senior review.

Recognition and red flags

Feature	Possible meaning	Action
Thunderclap headache	Sudden severe pain reaching maximum intensity within seconds or minutes.	Record exact onset and activate urgent brain-imaging pathway.
Vomiting/photophobia/neck stiffness	Meningeal irritation and raised intracranial pressure.	Protect airway, control symptoms and escalate for imaging.
Collapse or transient loss of consciousness	Large initial bleed, raised ICP or seizure.	ABCDE, glucose, ECG and urgent specialist care.
Focal deficit or seizure	Brain injury, vasospasm, hydrocephalus or rebleed.	Repeat neurological assessment and urgent imaging.
Neck/back pain or exertional onset	Vascular trigger or spinal SAH possibility.	Do not reassure; document and investigate.
New deterioration after admission	Rebleed, hydrocephalus, delayed cerebral ischaemia, seizure or metabolic cause.	Call stroke/neurosurgery team immediately and repeat ABCDE/imaging.

Triage and first contact

Move the patient to a monitored resuscitation area and call senior emergency, neurology/neurosurgery and critical-care support.
Ask “When did the pain begin?” and distinguish last-known-well from the time of arrival. Record witness information and any sentinel headaches.
Check anticoagulants, antiplatelets, bleeding disorders, pregnancy, trauma, stimulant use, hypertension and previous aneurysm.
Keep the patient nil by mouth, reduce stimulation, provide safe analgesia/antiemetic therapy and prevent straining.
Pre-alert the receiving stroke/neurosurgical centre; do not send an unstable patient away from resuscitation for nonessential tests.

ABCDE and neurological assessment

Step	Assess	Actions
A – Airway	GCS, gag/cough, vomiting, secretions and seizure activity.	Position, suction, airway adjuncts and controlled expert intubation if protection fails.
B – Breathing	Rate, effort, SpO₂, aspiration, pulmonary oedema and abnormal pattern.	Oxygen for hypoxaemia, ventilatory support when needed and avoid hypoxia/hypercapnia.
C – Circulation	Pulse, BP, ECG, perfusion, temperature and arrhythmia.	IV access, careful BP control, treat shock and monitor neurogenic cardiac injury.
D – Disability	GCS, pupils, gaze, speech, power, sensation, headache and seizure.	Check glucose, record a baseline neurological score and repeat after every change.
E – Exposure	Trauma, rash, meningism, temperature, neck/back tenderness and medication patches.	Prevent hypothermia, identify trauma/coagulopathy and preserve dignity.

Emergency investigations

Investigation	Purpose	Clinical point
Non-contrast CT brain	Detect acute subarachnoid blood, hydrocephalus or other haemorrhage.	Perform urgently; sensitivity is highest early but a negative scan does not end evaluation in a high-risk case.
CT angiography	Identify aneurysm, vascular malformation or dissection.	Guides neurosurgical/endovascular planning after initial assessment.
Lumbar puncture	Assess CSF for xanthochromia, red cells, pressure and infection when CT is non-diagnostic and suspicion remains.	Do not perform with mass effect, obstructed CSF flow, focal deficit, reduced consciousness, coagulopathy or unsafe airway without specialist guidance.
FBC, group/cross-match, coagulation, renal/electrolytes, glucose	Assess anaemia, bleeding risk, organ function and metabolic mimics.	Correct coagulopathy under specialist protocol; do not delay emergency imaging or transfer.
ECG/troponin/echo	Detect neurogenic stunned myocardium, arrhythmia and pulmonary oedema.	Cardiac abnormalities may accompany SAH and alter fluid/BP management.

Immediate medical management

Admit or transfer to a centre with neurosurgery, neurocritical care and endovascular/coiling or clipping capability.
Maintain airway, oxygenation, normocapnia, normoglycaemia and normothermia; avoid hypotension and severe hypertension.
Use prescribed analgesia and antiemetics to prevent agitation, vomiting and Valsalva-related pressure surges.
Review and reverse anticoagulation or coagulopathy urgently under haematology/neurosurgical guidance.
Control BP smoothly according to local SAH protocol, avoiding rapid drops that compromise cerebral perfusion.
Treat seizures promptly; prophylactic antiseizure medicine is a specialist decision based on seizure risk and clinical features.
Use isotonic fluids carefully to maintain euvolaemia; avoid routine fluid restriction or excessive free water.

Secure the ruptured aneurysm

The source of aneurysmal bleeding should be identified and secured as soon as safely possible, preferably early in the course. Endovascular coiling, surgical clipping or another specialist approach is chosen according to aneurysm anatomy, clinical grade, age, comorbidities and local expertise.

Maintain a clear treatment clock and communicate imaging, neurological grade, anticoagulants and last-known-well time.
Prepare for angiography, anaesthesia, blood products and post-procedure ICU care.
Continue close monitoring because rebleeding risk remains until the aneurysm is secured.
After treatment, watch for access-site bleeding, new deficit, vasospasm, hydrocephalus and seizure.

Hydrocephalus and raised intracranial pressure

Suspect hydrocephalus with declining consciousness, worsening headache/vomiting, gaze abnormality, bradycardia with hypertension or new neurological deficit.
Elevate the head when safe, keep the neck neutral, prevent hypoxia/hypercapnia and call neurosurgery urgently.
External ventricular drainage may be required for acute symptomatic hydrocephalus; it is a specialist procedure with strict infection and pressure management.
Avoid unnecessary lumbar puncture, over-sedation, fever, hypotension and excessive fluid shifts.
Repeat CT promptly when neurological status changes.

Delayed cerebral ischaemia and vasospasm

Delayed cerebral ischaemia can occur days after SAH and may be related to vasospasm or other microcirculatory mechanisms. A new focal deficit, speech change, confusion, reduced consciousness or worsening headache is an emergency—not simply fatigue or “post-ictal” behaviour.

Perform frequent neurological observations and compare with the patient’s baseline.
Maintain euvolaemia and avoid prophylactic hypervolaemia; use specialist-directed haemodynamic augmentation if indicated.
Administer nimodipine or other disease-specific medicines only according to local neurosurgical protocol and BP tolerance.
Arrange repeat vascular imaging, CT perfusion or transcranial Doppler when available and clinically indicated.
Escalate immediately for new deficits; treatment may include endovascular therapy or intensive haemodynamic support.

Nursing care and monitoring

Record GCS, pupils, power, speech, gaze, headache severity, seizure activity and vital signs at prescribed intervals.
Monitor BP, ECG, oxygenation, fluid balance, sodium, glucose, temperature and urine output.
Maintain quiet surroundings, head positioning, aspiration precautions and nil-by-mouth status until swallow assessment.
Give analgesics, antiemetics, nimodipine and antiseizure medicines exactly as prescribed; observe BP and adverse effects.
Inspect IV, arterial and procedural sites for bleeding; use pressure precautions and document anticoagulant reversal.
Communicate any neurological change immediately using SBAR and record the exact time of deterioration.

Complications

Complication	Clues	Emergency response
Rebleeding	Sudden recurrent headache, vomiting, collapse, new deficit or falling GCS.	ABCDE, urgent CT/CTA and immediate neurosurgical escalation.
Hydrocephalus/raised ICP	Reduced consciousness, pupil change, vomiting or bradycardia with hypertension.	Head positioning, airway support, urgent imaging and ventricular drainage review.
Delayed cerebral ischaemia	New weakness, aphasia, confusion or reduced level of consciousness days later.	Immediate neurological review, imaging and vasospasm pathway.
Seizure	Convulsions, eye deviation or unexplained postictal state.	Seizure protocol, glucose, airway protection and specialist review.
Neurogenic cardiac injury	ECG changes, arrhythmia, pulmonary oedema or troponin rise.	Cardiac monitoring, echo and careful fluid/BP management.
Hyponatraemia	Confusion, seizures, headache or worsening neurological status.	Check serum/urine studies and correct under specialist protocol; avoid hypotonic fluid.

Transfer and communication

Pre-alert a neurosurgical/stroke centre with CT/CTA results, neurological grade, airway status, BP, medication and anticoagulant history.
Transport with trained staff, portable oxygen, suction, monitor, emergency drugs and a documented deterioration plan.
Send imaging electronically or on suitable media, laboratory results, medication chart, ECGs and procedure records.
Explain to family that early aneurysm treatment, ICU monitoring and rehabilitation may be required even when the patient initially appears improved.

Prevention and recovery

Control hypertension, stop smoking, avoid cocaine/amphetamines and review family history of aneurysm or connective-tissue disease.
Ensure follow-up imaging and neurosurgical review after coiling/clipping; recurrence and untreated aneurysms require surveillance.
Assess cognition, mood, fatigue, headache, seizures, mobility, speech and return-to-work needs.
Educate family about recurrent thunderclap headache, new weakness, seizures, confusion or collapse as emergency warning signs.

Clinical scenarios

Scenario 1 – Thunderclap headache: A previously well adult develops instantaneous severe headache while lifting, vomits and has neck stiffness. Record onset, ABCDE/glucose, urgent CT, senior review and do not discharge after symptom relief without completing the SAH pathway.

Scenario 2 – Deterioration after known SAH: A patient becomes drowsy with a new left-arm weakness five days after admission. Treat as rebleed, hydrocephalus or delayed cerebral ischaemia until proven otherwise; repeat ABCDE, urgent imaging and call neurosurgery.

Scenario 3 – SAH with pulmonary oedema: A patient develops hypoxia, crackles and ECG changes after the bleed. Support oxygenation, monitor ECG, obtain echo and involve critical care; avoid indiscriminate fluid loading.

Common errors to avoid

Calling thunderclap headache “migraine” without considering SAH.
Failing to record exact onset or the presence of sentinel headaches.
Delaying CT, vascular imaging, antibiotics when indicated, transfer or neurosurgical review.
Performing lumbar puncture despite mass effect, focal deficit, reduced consciousness or coagulopathy.
Allowing hypotension, hypoxia, hypercapnia, fever or severe hypertension to persist.
Missing delayed cerebral ischaemia because the patient’s headache is unchanged.
Failing to repeat neurological observations after analgesia, seizure or BP treatment.

SAH ALERT: S – Sudden maximal headache; A – Airway/ABCDE; H – Head CT and haemorrhage pathway. A – Aneurysm imaging; L – Limit rebleeding risks; E – Evaluate neuro changes; R – Refer/secure aneurysm; T – Track vasospasm, hydrocephalus and seizures.

Revision questions

What clinical features make a headache suspicious for SAH?
Why can a normal early neurological examination not exclude SAH?
What are the roles of CT, CTA and lumbar puncture?
List immediate ABCDE actions for a suspected SAH patient.
How do rebleeding, hydrocephalus and delayed cerebral ischaemia present?
Why must BP, oxygenation, glucose and temperature be controlled carefully?
What information belongs in a neurosurgical handover?

Key takeaways

Thunderclap headache is a neurological emergency until SAH is excluded.
Record onset, stabilise ABCDE and obtain urgent brain and vascular imaging.
Do not let LP, transport or laboratory delays postpone life-saving specialist care.
Secure a ruptured aneurysm early and monitor for rebleeding, hydrocephalus, seizures and delayed cerebral ischaemia.
Every new neurological change after SAH requires immediate reassessment.

References for further study

Subarachnoid Haemorrhage: Thunderclap Headache, Emergency Assessment and Management Read More »

Neuromuscular Failure: Recognition, Respiratory Support and Emergency Management

Why this topic matters: Neuromuscular disorders can weaken the muscles that maintain airway patency, cough, swallowing and ventilation. Respiratory failure may develop quietly while oxygen saturation appears acceptable, especially when supplemental oxygen masks worsening carbon-dioxide retention. Myasthenic crisis, Guillain–Barré syndrome, spinal muscular atrophy, motor-neurone disease, muscular dystrophy, botulism, toxic paralysis and electrolyte disorders require early respiratory assessment, careful airway planning and specialist escalation. Use local Uganda protocols and senior critical-care/neurology supervision for ventilatory support and medicines.

Learning objectives

Explain how neuromuscular weakness causes ventilatory, bulbar and airway failure.
Recognise impending respiratory failure before exhaustion, cyanosis or cardiac arrest.
Perform ABCDE, focused muscle and bulbar examination, serial respiratory measurements and neurological assessment.
Outline emergency care for myasthenic crisis, Guillain–Barré syndrome, spinal cord disease, botulism and toxic/metabolic paralysis.
Plan non-invasive/invasive ventilation, secretion clearance, medication safety, nursing care and rehabilitation referral.

What is neuromuscular failure?

Neuromuscular failure occurs when the nervous system, neuromuscular junction or muscles cannot generate enough force for effective breathing, coughing, swallowing or movement. Weakness may be acute, subacute or chronic with an acute trigger. The diaphragm and intercostal muscles may fail first, producing shallow breathing, fatigue and rising carbon dioxide. Bulbar weakness causes dysphagia, pooling secretions and aspiration; upper-airway weakness may lead to obstruction even when lung tissue is initially normal.

Oxygen saturation can remain normal until late because the patient compensates by increasing effort or receives supplemental oxygen. A falling vital capacity, weak cough, inability to count or speak in full sentences, orthopnoea, paradoxical breathing, drowsiness or rising CO₂ should trigger escalation even when SpO₂ looks reassuring.

Safety point: Do not wait for respiratory arrest. Neuromuscular patients can deteriorate rapidly after sedatives, opioids, infection, aspiration, electrolyte disturbance or transport. Call anaesthesia/critical care early and plan the airway while the patient is still cooperative.

Conditions and precipitating factors

Condition	Emergency pattern	Common triggers or clues
Myasthenia gravis	Fluctuating ocular, bulbar and limb weakness; myasthenic crisis causes ventilatory failure.	Infection, surgery, pregnancy, missed pyridostigmine, interacting medicines or aspiration.
Guillain–Barré syndrome	Progressive symmetrical weakness, areflexia, autonomic instability and respiratory failure.	Recent respiratory/GI infection, rapid ascending weakness, facial or bulbar involvement.
Botulism/toxic paralysis	Descending paralysis, diplopia, fixed pupils, dysphagia and respiratory weakness.	Contaminated food, wound, injection exposure or infant botulism.
Spinal cord/brainstem disease	Weakness with sensory level, sphincter change, cranial-nerve signs or altered consciousness.	Trauma, stroke, compression, tumour or infection.
Muscular dystrophy/motor-neurone disease	Chronic weakness with acute infection, secretion retention or peri-operative failure.	Baseline low respiratory reserve and weak cough.
Metabolic/drug causes	Acute flaccid weakness, arrhythmia or altered mental status.	Hypokalaemia, hyperkalaemia, hypophosphataemia, organophosphate, magnesium/toxin or sedative exposure.

Triage and first contact

Place the patient in a monitored resuscitation-capable area and call senior emergency, neurology, anaesthesia and critical-care support.
Ask about baseline mobility, speech, swallowing, cough, home ventilation, previous intubation, advance plan and usual respiratory measurements.
Identify onset and progression: ocular symptoms, dysarthria, dysphagia, orthopnoea, inability to lie flat, limb weakness, sensory symptoms and recent infection.
Review medicines carefully, including pyridostigmine, steroids, immunosuppressants, sedatives, opioids, magnesium, aminoglycosides, fluoroquinolones and beta-blockers.
Keep the patient upright or in the position that improves breathing, suction secretions and prepare airway equipment before fatigue develops.
Do not leave a weak patient alone in a waiting area; recheck respiratory effort and bulbar function frequently.

ABCDE assessment

Step	What to assess	Actions
A – Airway	Voice, tongue/palate movement, gag/cough, pooling saliva, stridor and ability to protect airway.	Suction, positioning, airway adjuncts and early anaesthetic review; prepare for controlled intubation if failing.
B – Breathing	Rate, depth, paradoxical movement, accessory muscles, single-breath count, cough, SpO₂ and CO₂.	Oxygen for hypoxaemia, blood gas, serial vital capacity/forced vital capacity where available and ventilatory support.
C – Circulation	Pulse/BP, ECG, autonomic instability, dehydration, sepsis and arrhythmia.	IV access, cautious fluids when indicated, treat shock and monitor dysautonomia.
D – Disability	GCS, pupils, cranial nerves, ptosis, extraocular movement, limb power, reflexes and sensation.	Record baseline and trend; identify stroke, spinal cord, seizure or metabolic mimic.
E – Exposure	Fever, rash, trauma, injection sites, pressure areas and signs of aspiration.	Prevent hypothermia, search for infection/toxin and protect weak limbs.

Warning signs of impending ventilatory failure

Rapid shallow breathing, paradoxical abdominal movement or increasing accessory-muscle use.
Orthopnoea, inability to lie flat, weak cough, repeated suctioning or inability to clear secretions.
Bulbar symptoms: nasal speech, dysarthria, choking, drooling, wet voice or nasal regurgitation.
Single-breath counting becomes shorter, speech is limited to a few words or the patient cannot lift the head.
Falling vital capacity or inspiratory force, rising PaCO₂, respiratory acidosis, increasing fatigue or drowsiness.
SpO₂ falling despite oxygen, recurrent aspiration, cyanosis or inability to cooperate with non-invasive support.

Monitoring and investigations

Assessment	Why it matters	Emergency interpretation
Serial respiratory rate, effort and single-breath count	Shows fatigue and declining reserve.	Trend is more important than one isolated value; worsening effort requires escalation.
SpO₂ and blood gas	Detect oxygenation, CO₂ retention and acidosis.	Normal SpO₂ does not exclude hypercapnic failure; obtain gas when fatigue or hypoventilation is suspected.
Vital capacity/forced vital capacity	Quantifies respiratory muscle strength where reliable.	Use repeated measurements plus clinical signs; do not delay airway support for a number.
Peak cough flow and secretion assessment	Estimates ability to clear airway.	Weak cough, pooling secretions and aspiration need physiotherapy, suction or airway planning.
FBC, electrolytes, glucose, renal/liver profile	Find infection, metabolic weakness and drug-safety problems.	Correct potassium, phosphate, calcium or glucose abnormalities urgently.
ECG, chest imaging and cultures	Identify arrhythmia, aspiration, pneumonia, atelectasis or sepsis.	Treat the trigger without delaying respiratory support.
Neurology tests	EMG, nerve conduction, antibody tests, CSF and imaging may confirm cause.	Specialist-led; do not delay stabilisation for diagnostic certainty.

Non-invasive and invasive ventilation

Provide oxygen only for hypoxaemia and monitor CO₂; excessive oxygen can mask hypoventilation.
Non-invasive ventilation may support selected cooperative patients with intact airway protection and manageable secretions. It is unsafe when there is severe bulbar failure, vomiting, shock, reduced consciousness or inability to remove the mask.
Use cough-assist, suction, chest physiotherapy and assisted lung-volume recruitment where trained staff and equipment are available.
Prepare early for endotracheal intubation when there is worsening hypercapnia/acidosis, exhaustion, recurrent aspiration, weak cough, persistent hypoxaemia, altered consciousness or inability to tolerate NIV.
Intubation should be controlled by an experienced team because induction, neuromuscular blockers and positive pressure can cause profound deterioration.
After intubation, confirm tube placement, secure it, provide lung-protective ventilation, analgesia/sedation, secretion care and frequent neurological/haemodynamic reassessment.

Myasthenic crisis

Myasthenic crisis is severe worsening of neuromuscular transmission causing bulbar and respiratory failure. Look for fatigable ptosis/diplopia, nasal speech, dysphagia, weak neck flexion, inability to count, weak cough and progressive respiratory effort. Infection and aspiration are frequent precipitants; missed treatment and medicines that impair neuromuscular transmission can also contribute.

Admit to a monitored area and involve neurology/critical care early.
Assess serial respiratory function and swallow; keep nil by mouth if bulbar weakness is present.
Treat infection, aspiration and other triggers; review every medication with pharmacy/neurology.
Continue or adjust cholinesterase-inhibitor therapy only under specialist direction because secretions, bradycardia and cholinergic toxicity can worsen airway care.
Rapid immunotherapy such as IVIG or plasma exchange is specialist treatment for crisis; the choice depends on resources, contraindications and local protocol.
Plan early airway management rather than waiting for exhaustion. Distinguish myasthenic crisis from excessive cholinergic effect with specialist support.

Guillain–Barré syndrome

GBS is an acute immune-mediated peripheral neuropathy often preceded by respiratory or gastrointestinal infection. Progressive symmetrical weakness, reduced reflexes, paraesthesia, facial weakness, bulbar dysfunction and autonomic instability are characteristic. Respiratory failure can develop quickly, sometimes before severe limb weakness is obvious.

Admit patients with progression, bulbar symptoms, autonomic instability, weak cough or respiratory decline to a monitored setting.
Measure serial respiratory function and perform frequent cranial-nerve, limb-power and swallowing assessments.
Watch for BP swings, tachy/bradyarrhythmia, ileus, urinary retention, pain, DVT, pressure injury and dysautonomia.
IVIG or plasma exchange are disease-modifying treatments prescribed by neurology; corticosteroids alone are not a substitute for specialist therapy.
Intubate early when airway protection or ventilation is failing; avoid emergency delay caused by waiting for CSF or nerve-conduction confirmation.

Other neuromuscular emergencies

Botulism: descending symmetrical paralysis with cranial-nerve signs; secure airway early, notify public health and arrange antitoxin urgently.
Spinal cord compression: weakness with sensory level, back pain or sphincter dysfunction; immobilise if trauma, obtain urgent imaging and call neurosurgery.
High cervical spinal injury: protect the spine, support ventilation, assess neurogenic shock and transfer to trauma/spinal services.
Organophosphate toxicity: secretions, bronchospasm, bradycardia, fasciculations and weakness; decontaminate and use the poisoning protocol.
Electrolyte paralysis: sudden flaccid weakness with ECG changes; obtain urgent electrolytes and treat life-threatening potassium abnormalities.
Critical-illness/polyneuropathy: weakness after prolonged sepsis or ICU stay; prevent secondary complications and involve rehabilitation early.

Airway and medication safety

Medication caution: Sedatives, opioids, magnesium, aminoglycosides, fluoroquinolones, macrolides, beta-blockers, some antiarrhythmics and neuromuscular blockers can worsen weakness or respiratory failure. Check the diagnosis, current medicines, renal function and local interaction guidance before administration.

Prepare suction, bag-mask ventilation, difficult-airway equipment and capnography before sedating or transporting a weak patient.
Use the lowest effective sedative/analgesic dose with continuous respiratory monitoring.
Review missed pyridostigmine or steroid doses with neurology; do not make abrupt changes independently.
Document medicine time, dose, respiratory response, secretions, heart rate and blood pressure.

Nursing care and monitoring

Record respiratory rate, effort, SpO₂, blood gas results, cough strength, secretion load, swallowing, vital capacity and level of consciousness.
Maintain upright positioning, oral care, suction readiness, aspiration precautions and physiotherapy/cough-assist plan.
Reposition regularly, protect pressure areas, provide DVT prevention and maintain nutrition/hydration safely.
Monitor autonomic instability in GBS: sudden hypertension, hypotension, tachycardia, bradycardia, sweating or ileus.
Use communication aids for patients who cannot speak; agree on a yes/no signal before fatigue worsens.
Handover trend, airway plan, home ventilation settings, medication timing, last swallow and escalation thresholds.

Complications

Complication	Clues	Response
Hypercapnic respiratory failure	Drowsiness, headache, confusion, rising PaCO₂ or acidosis.	Urgent critical-care review and ventilatory support; do not rely on oxygen alone.
Aspiration pneumonia	Choking, wet voice, fever, crackles, hypoxia or new infiltrate.	Nil by mouth, suction, imaging, antibiotics when indicated and airway review.
Autonomic dysreflexia/instability	Sudden BP changes, arrhythmia, sweating, flushing or bradycardia.	Continuous monitoring and specialist management of the trigger.
Pressure injury and DVT	Immobility, limb swelling, skin breakdown or pain.	Repositioning, skin care, prophylaxis and investigation when suspected.
Medicine-related weakness	Decline after sedative, antibiotic, magnesium or neuromuscular blocker.	Stop/review culprit medicine, support airway and call pharmacy/neurology.
Prolonged ventilator dependence	Weak cough, failed spontaneous-breathing trials, secretion retention.	Multidisciplinary weaning, physiotherapy, nutrition and rehabilitation plan.

Clinical scenarios

Scenario 1 – Myasthenic crisis: A patient with myasthenia develops nasal speech, choking, weak neck flexion and a falling single-breath count after pneumonia. Keep upright and nil by mouth, suction, monitor serial respiratory function, treat infection, call neurology/critical care and prepare controlled ventilation.

Scenario 2 – Guillain–Barré syndrome: A patient with ascending weakness becomes tachypnoeic and cannot cough effectively. Do not wait for severe hypoxia; obtain blood gas/serial respiratory measurements, monitor autonomic function, arrange ICU and early airway planning.

Scenario 3 – Drug interaction: A patient with neuromuscular disease receives a sedative and becomes drowsy with shallow breathing. Stop further sedatives, support airway/ventilation, check gas/glucose and escalate immediately.

Common errors to avoid

Using normal SpO₂ to rule out respiratory muscle failure.
Waiting for cyanosis, exhaustion or arrest before calling anaesthesia/ICU.
Giving sedatives, opioids, magnesium or interacting antibiotics without a risk review.
Applying NIV to a patient who cannot protect the airway or clear secretions.
Performing repeated tests while delaying treatment of infection, aspiration or metabolic triggers.
Failing to document baseline function, home ventilation and the patient’s communication signal.
Assuming weakness is psychogenic, especially when symptoms are progressive or bulbar.

WEAK AIRWAY: W – Watch work of breathing; E – Examine bulbar function; A – Assess CO₂ and airway; K – Keep suction/critical care ready; A – Avoid harmful medicines; I – Identify trigger; R – Respiratory support early; W – Wean and rehabilitate; A – Aspiration prevention; Y – Your handover must include trends.

Revision questions

Why can SpO₂ remain normal during early neuromuscular hypoventilation?
List clinical signs of impending ventilatory failure.
How do myasthenic crisis and Guillain–Barré syndrome differ clinically?
When is NIV unsafe in neuromuscular weakness?
Which investigations assess respiratory muscle strength and CO₂ retention?
List medicines that may worsen neuromuscular transmission.
What nursing interventions reduce aspiration, pressure injury and DVT?

Key takeaways

Respiratory muscle failure can be silent; trend effort, cough, bulbar function and CO₂.
Plan the airway early and involve critical care before exhaustion.
Treat myasthenic crisis, GBS, toxins, infection and metabolic triggers through specialist pathways.
Use NIV selectively and never delay intubation when airway protection is failing.
Medication review, secretion care, aspiration prevention and communication planning are essential.

References for further study

Neuromuscular Failure: Recognition, Respiratory Support and Emergency Management Read More »

Meningitis: Emergency Recognition, Assessment and Management

Why this topic matters: Meningitis is inflammation of the membranes surrounding the brain and spinal cord. Bacterial meningitis and meningococcal disease can cause death or permanent disability within hours, so antibiotics and sepsis care must not wait for every diagnostic test. Viral, TB, fungal and other causes require different treatment, but the first emergency priorities remain airway, breathing, circulation, neurological assessment, infection control, early senior review and safe investigation.

Learning objectives

Recognise meningitis and meningococcal sepsis in adults, children, infants and immunocompromised patients.
Perform triage, ABCDE, sepsis assessment, neurological examination and exposure precautions.
Describe urgent investigations, lumbar-puncture safety and empiric treatment principles.
Manage shock, seizures, raised intracranial pressure, airway compromise and complications.
Plan nursing observation, contact prophylaxis, vaccination education and discharge follow-up.

Definition, causes and transmission

Meningitis may be bacterial, viral, TB, fungal, parasitic, malignant, autoimmune or drug-related. The common bacterial causes vary by age, vaccination status and immune function; pneumococcus, meningococcus and Haemophilus influenzae remain important. Meningococcal disease may present as meningitis, septicemia, or both. Respiratory and throat secretions can transmit meningococcus during close or prolonged contact.

Bacterial meningitis is a medical emergency. Do not use the absence of the full triad of fever, headache and neck stiffness to rule it out: infants, older adults, immunocompromised people and patients with sepsis may present atypically.

Safety point: If bacterial meningitis is strongly suspected, collect blood cultures when this will not delay treatment and give empiric antimicrobials urgently according to local protocol. If lumbar puncture or imaging is delayed, antibiotics must not be postponed.

Clinical features and red flags

Group	Possible presentation	High-risk features
Adults/older children	Fever, severe headache, neck stiffness, photophobia, vomiting, confusion or seizures.	Reduced consciousness, purpura, shock, focal deficit, papilloedema or rapidly worsening symptoms.
Infants	Poor feeding, irritability, lethargy, vomiting, abnormal cry, temperature instability or bulging fontanelle.	Apnoea, seizures, poor perfusion, hypothermia, tense fontanelle or persistent inconsolability.
Meningococcal sepsis	Fever, rigors, myalgia, limb pain, vomiting, diarrhoea, petechiae or purpura.	Rapid rash progression, hypotension, cold extremities, altered mental state or DIC.
TB/fungal/HIV-associated	Subacute headache, fever, weight loss, cranial neuropathy, confusion or focal signs.	Raised ICP, hydrocephalus, profound immunosuppression or prolonged symptoms.

Triage and infection prevention

Place the patient in a resuscitation-capable area and notify the senior clinician, laboratory and infection-prevention team.
Use standard precautions and appropriate droplet precautions for suspected meningococcal disease until the recommended period of effective antibiotics has passed.
Ask about onset, contacts, vaccination, recent antibiotics, travel/outbreak exposure, splenectomy, HIV, TB, immunosuppression, head injury, neurosurgery and CSF leak.
Do not leave a confused or seizing patient alone; institute falls, aspiration and seizure precautions.
Pre-alert a referral hospital if intensive care, neurosurgery, paediatrics, infectious disease or isolation capacity is needed.

ABCDE and neurological assessment

Step	Assessment	Actions
A – Airway	GCS, secretions, vomiting, gag, seizures and aspiration.	Position, suction, airway adjuncts and expert airway support if protection is lost.
B – Breathing	Rate, effort, SpO₂, cyanosis, aspiration and abnormal pattern.	Oxygen for hypoxaemia/distress; ventilate cautiously with critical-care support.
C – Circulation	Pulse, BP, capillary refill, skin, urine output, lactate and rash.	IV/IO access, cultures, cautious fluids, antibiotics and vasopressors for refractory shock.
D – Disability	GCS/AVPU, pupils, neck stiffness, focal deficits, seizures and glucose.	Check glucose, treat seizures and escalate possible raised ICP or stroke.
E – Exposure	Full skin inspection for petechiae/purpura, fever, trauma, rash and infection source.	Prevent chilling, document rash progression and preserve dignity.

Immediate management

Obtain IV/IO access, blood cultures and urgent blood tests while preparing empiric antimicrobial therapy.
Start antibiotics according to age, immune status, local resistance and Uganda treatment protocol; do not wait for CT or LP if either is delayed.
Give oxygen for hypoxaemia and support ventilation if consciousness or seizures compromise breathing.
Treat sepsis with cautious isotonic fluid boluses, reassessing lungs, perfusion, BP, urine output and lactate; escalate to vasopressors in critical care when shock persists.
Control fever and pain, correct hypoglycaemia/electrolyte disturbance and treat seizures promptly.
Use corticosteroid adjuncts only when indicated by the local meningitis protocol and before/with the first antibiotic dose where appropriate.
Involve paediatrics, infectious disease, neurology, anaesthesia and critical care early for severe disease.

Investigations and lumbar-puncture safety

Test	Purpose	Safety point
Blood cultures	Identify bacterial cause and guide de-escalation.	Collect promptly, but never delay antibiotics in an unstable patient.
FBC, CRP/procalcitonin, renal/liver profile, glucose, lactate	Assess inflammation, organ dysfunction, shock and drug safety.	Trend results; normal inflammatory markers do not exclude early disease.
Non-contrast CT brain	Assess mass effect, hydrocephalus, oedema or alternative diagnosis before LP when indicated.	CT should not become an automatic reason to delay antibiotics.
Lumbar puncture	CSF opening pressure, cells, protein, glucose, Gram stain, culture and PCR.	Do not perform with signs of raised ICP, focal deficit, papilloedema, severe shock, uncontrolled seizures, coagulopathy or unsafe airway without specialist review.
Malaria/TB/HIV/fungal testing	Identify local and host-specific causes.	Use epidemiology, immune status and subacute presentation to guide testing.

Bacterial meningitis pathway

Recognise suspected disease and start ABCDE/sepsis care.
Collect blood cultures and give empiric antibiotics urgently according to age and local protocol.
Assess for shock, respiratory failure, seizure, raised ICP, purpura/DIC and focal neurological deficits.
Perform LP only when clinically safe and when it will not delay essential treatment; send CSF promptly.
Adjust antimicrobial therapy when cultures/PCR and specialist advice identify the organism.
Monitor hearing, cognition, motor function, vision and psychosocial needs because long-term sequelae are common.

Meningococcal sepsis and rash

Meningococcal disease can deteriorate extremely rapidly. A non-blanching petechial or purpuric rash is an important warning sign, but early rash may be absent. Assess for septic shock and disseminated intravascular coagulation (DIC).

Isolate appropriately, call the sepsis team, establish access and give antibiotics immediately under protocol.
Mark and photograph/document rash progression according to policy; reassess skin, capillary refill, temperature and perfusion frequently.
Check FBC/platelets, coagulation, fibrinogen, lactate, renal function and blood gas.
Manage shock, bleeding, metabolic acidosis, renal injury and limb ischaemia in critical care.
Notify public health and identify close contacts who may need chemoprophylaxis and vaccination advice.

Raised intracranial pressure and seizures

Warning signs include falling GCS, repeated vomiting, unequal pupils, new focal signs, abnormal posturing, bradycardia with hypertension, irregular breathing or papilloedema.
Elevate the head where safe, maintain neutral neck alignment, avoid hypoxia/hypotension/hyperthermia and obtain urgent critical-care/neurosurgical review.
Treat convulsive seizures immediately according to the seizure pathway; persistent coma may be non-convulsive status.
Avoid unnecessary LP or excessive fluids when raised ICP is suspected; use imaging and specialist direction.
Prepare for advanced airway management if protective reflexes fail, with attention to cerebral perfusion.

Viral, TB and fungal meningitis

Viral meningitis may be self-limiting, but severe illness, encephalitis, immunosuppression or herpes suspicion requires hospital care and targeted antivirals under specialist guidance.
TB meningitis is often subacute and may cause cranial neuropathies, hydrocephalus and stroke; early TB/HIV evaluation and prolonged treatment are required.
Fungal meningitis is uncommon but important in advanced HIV or immunosuppression; diagnosis and antifungal therapy require specialist and laboratory support.
Never label a patient “viral” solely because they are not shocked; early bacterial disease can look mild.

Nursing care and monitoring

Monitor GCS, pupils, focal power, seizures, temperature, HR, BP, RR, SpO₂, capillary refill and urine output at acuity-appropriate intervals.
Maintain droplet precautions, hand hygiene, dedicated equipment and safe specimen transport.
Keep nil by mouth if consciousness or swallow is impaired; provide oral care and aspiration prevention.
Administer antibiotics on time, check allergies, observe for reactions and document dose/route/time.
Maintain fluid balance, monitor for pulmonary oedema and assess response to each fluid bolus.
Observe IV sites, rash, bleeding, pressure areas, hearing/vision changes and medication adverse effects.
Use SBAR handover with suspected cause, antibiotics, cultures, LP/CT status, neurological trend and escalation plan.

Complications

Complication	Clues	Response
Septic shock	Hypotension, cold peripheries, altered state, oliguria or rising lactate.	Sepsis bundle, antibiotics, cautious fluids and early vasopressor/ICU review.
Raised ICP/herniation	Falling GCS, pupil change, posturing, vomiting or irregular breathing.	Airway/oxygenation, head positioning, urgent imaging and neurocritical care.
Seizures	Convulsions, eye deviation or persistent unexplained unresponsiveness.	Seizure protocol, glucose, airway protection and EEG/specialist review.
DIC/purpura fulminans	Rapidly spreading purpura, bleeding, thrombocytopenia or abnormal coagulation.	Critical care, blood-product and source-control guidance.
Hearing/neurological disability	Hearing loss, cognitive change, weakness, cranial-nerve deficits.	Early audiology, rehabilitation, neurology and psychosocial support.
Hydrocephalus/vasculopathy	Persistent headache, vomiting, reduced consciousness or focal deficit.	Urgent imaging and neurosurgical/neurology referral.

Prevention and contact management

Promote routine vaccination, including Hib, pneumococcal and meningococcal vaccines according to Uganda’s schedule and outbreak guidance.
Notify public health for suspected meningococcal disease or an outbreak; list household, intimate and healthcare contacts.
Give chemoprophylaxis to eligible close contacts according to the public-health protocol; routine casual contact does not usually require it.
Use respiratory hygiene, ventilation, hand hygiene and early isolation during outbreaks.
Provide survivors with follow-up for hearing, cognition, seizures, weakness, mental health and school/work support.

Clinical scenarios

Scenario 1 – Meningococcal sepsis: A young adult has fever, leg pain, confusion, hypotension and a rapidly spreading purpuric rash. Begin ABCDE/sepsis care, droplet precautions, blood cultures if immediately available, urgent antibiotics, cautious fluids and public-health notification.

Scenario 2 – Suspected bacterial meningitis: An adult has fever, severe headache, neck stiffness and photophobia but is currently haemodynamically stable. Start antibiotics promptly, obtain blood cultures, assess LP safety and arrange urgent imaging/specialist review without delaying treatment.

Scenario 3 – Infant: A four-month-old is irritable, feeding poorly, hypothermic and has a tense fontanelle. Treat as a high-risk emergency: ABCDE, glucose, access, antibiotics, sepsis care and paediatric referral.

Common errors to avoid

Waiting for the classic triad or a rash before treating.
Delaying antibiotics for CT, LP, transport or laboratory results.
Performing LP with signs of raised ICP, shock, focal deficit or coagulopathy without specialist assessment.
Forgetting meningococcal isolation and contact notification.
Underestimating atypical infant, elderly, HIV-associated or TB presentations.
Failing to monitor neurological trend, urine output, rash progression and respiratory status.

MENINGITIS emergency check: M – Mask/isolate and monitor; E – Evaluate ABCDE; N – Neurology, neck and rash; I – IV/IO access and glucose; N – Notify seniors/public health; G – Give antibiotics early; I – Investigate safely; T – Treat shock/seizures/ICP; I – Identify contacts; S – Safety-net and support survivors.

Revision questions

Why must suspected bacterial meningitis be treated before all diagnostic tests are complete?
List the clinical features of meningococcal sepsis and the appropriate infection precautions.
When should lumbar puncture be delayed or avoided?
How would you manage meningitis complicated by seizure and raised ICP?
What investigations should be taken in a stable adult before or alongside treatment?
Which contacts may need chemoprophylaxis after meningococcal disease?
List the long-term complications requiring follow-up.

Key takeaways

Meningitis and meningococcal sepsis are time-critical emergencies.
Start ABCDE, isolation, cultures when feasible and empiric antibiotics early.
Do not let CT or LP delay treatment; assess LP safety carefully.
Watch continuously for shock, seizures, airway failure and raised ICP.
Vaccination, contact prophylaxis and survivor follow-up are essential parts of care.

References for further study

Meningitis: Emergency Recognition, Assessment and Management Read More »

Seizures and Status Epilepticus: Emergency Recognition and Management

Why this topic matters: A seizure is a temporary episode of abnormal electrical activity in the brain. Most seizures stop spontaneously, but prolonged or repeated seizures without recovery can become status epilepticus, a life-threatening emergency causing hypoxia, acidosis, hyperthermia, aspiration, rhabdomyolysis, brain injury and death. Emergency providers must protect the patient from injury, maintain airway and glucose, time the event, search for reversible causes and give time-critical antiseizure medicine under local protocol.

Learning objectives

Differentiate focal, generalized, unknown-onset and non-convulsive seizures.
Provide safe first aid without restraining the patient or placing objects in the mouth.
Recognise status epilepticus and use a staged ABCDE and medication pathway.
Identify metabolic, structural, toxic, infectious, pregnancy-related and medication-related causes.
Plan postictal care, investigations, nursing observation, referral and discharge education.

Definitions and seizure types

A seizure is a transient occurrence of signs and symptoms caused by abnormal excessive or synchronous neuronal activity. Epilepsy is a neurological disorder with a predisposition to recurrent unprovoked seizures. A convulsive seizure may involve tonic stiffening followed by rhythmic clonic jerking, while focal seizures may cause a single-limb jerk, sensory symptoms, behavioural arrest, automatisms or impaired awareness. Some seizures are non-convulsive and present as staring, subtle twitching, aphasia or unexplained reduced consciousness.

Status epilepticus should be treated when a convulsive seizure lasts about five minutes or longer, or when seizures recur without recovery of consciousness. The longer it continues, the less likely it is to stop spontaneously and the harder it is to control. Use the patient’s emergency seizure plan when available, but do not delay ABCDE or emergency treatment.

First aid at the scene

Stay calm, note the start time and call for help. Protect the patient from traffic, fire, water, sharp objects and falls.
Place something soft under the head, loosen tight clothing around the neck and remove glasses.
Do not restrain movements, force the mouth open, insert fingers/objects, give food or drink, or attempt mouth-to-mouth while the seizure is active.
When jerking stops, place the patient in the recovery position if breathing adequately; suction secretions only when trained and needed.
Check breathing, colour and responsiveness. Start CPR if the patient is unresponsive and not breathing normally after the seizure.
Call emergency services for a first seizure, a seizure lasting five minutes or more, repeated seizures without recovery, injury, pregnancy, diabetes, breathing difficulty or water-related onset.

Triage and immediate ABCDE

Step	What to assess	Immediate actions
A – Airway	Secretions, vomit, tongue injury, obstruction, gag and consciousness.	Position, suction, airway adjuncts and expert airway support if protective reflexes are lost.
B – Breathing	Rate, effort, SpO₂, cyanosis, aspiration and ventilation after sedatives.	Oxygen for hypoxaemia, bag-mask ventilation if inadequate and prepare for advanced airway support.
C – Circulation	Pulse, BP, perfusion, ECG, temperature and signs of shock.	IV/IO access, monitor, blood sampling and treat arrhythmia, sepsis or haemorrhage.
D – Disability	Duration, glucose, pupils, GCS, focal signs, pregnancy and postictal state.	Check glucose immediately, time each seizure and repeat neurological assessments.
E – Exposure	Injury, fever, rash, drug patches, needle marks, head trauma and pregnancy clues.	Prevent hypothermia/hyperthermia, treat injuries and preserve dignity.

History and examination after the seizure

Witness description: onset, eye/head deviation, stiffening, jerking, colour change, vocalisation, incontinence, tongue bite and duration.
Recovery: time to obey commands, persistent confusion, focal weakness, headache or amnesia.
Previous seizures, epilepsy care plan, adherence, recent medicine change, withdrawal from alcohol/benzodiazepines and access to rescue medicine.
Triggers: sleep deprivation, fever, infection, hypoglycaemia, dehydration, flashing lights, stimulant use and missed doses.
Pregnancy/postpartum status, eclampsia symptoms, recent head injury, stroke symptoms, cancer, HIV/TB, renal/liver disease and family history.
Examine for meningism, focal neurological signs, trauma, fever, rash, toxidromes, pregnancy hypertension and lateral tongue injury.

Status epilepticus pathway

0–5 minutes: ABCDE, protect from injury, time the seizure, check glucose, oxygenate if hypoxaemic, establish IV/IO access and prepare medicines.
At about 5 minutes: give a benzodiazepine through the locally approved route and dose; use the patient’s prescribed rescue medicine if available. Monitor breathing continuously.
After the first dose: reassess airway, ventilation, pulse, BP and seizure activity. If ongoing, repeat only according to protocol and do not exceed safe cumulative dosing.
Established status: call anaesthesia/critical care and give a second-line antiseizure medicine such as levetiracetam, fosphenytoin/phenytoin, valproate or phenobarbital according to local resources and contraindications.
Refractory status: prepare intubation, continuous anaesthetic infusion, EEG where available and ICU transfer. Search actively for a structural, infectious, toxic or metabolic cause.
After clinical cessation: persistent coma may represent non-convulsive status; obtain urgent senior/neurology assessment and EEG if available.

Time-critical principle: WHO guidance supports a benzodiazepine as first-line treatment for acute convulsive seizures, followed by an appropriate antiseizure medicine when seizures persist. Drug choice depends on age, pregnancy, comorbidities, route availability and monitoring capacity.

Medication safety

Medicine stage	Purpose	Safety points
Benzodiazepine	Rapidly terminate ongoing convulsive activity.	Prepare oxygen, suction and ventilation; respiratory depression risk rises with repeated doses or opioids.
Levetiracetam	Second-line seizure control when available.	Check renal function and prescribed loading/infusion protocol; monitor mental state and behaviour.
Phenytoin/fosphenytoin	Second-line control in selected patients.	ECG/BP monitoring, infusion-rate and compatibility precautions; avoid or seek advice in certain rhythms and pregnancy.
Valproate	Second-line option in selected patients.	Consider pregnancy, liver disease, thrombocytopenia and interactions; follow specialist/local restrictions.
Phenobarbital	Alternative where other medicines are unavailable or unsuitable.	Respiratory depression and hypotension require airway and haemodynamic monitoring.
Glucose/thiamine	Correct hypoglycaemia and prevent metabolic brain injury in risk groups.	Check glucose first when possible, but treat severe hypoglycaemia immediately.

Search for reversible causes

Cause	Clues	Actions
Metabolic	Low glucose, sodium, calcium or magnesium; uraemia or liver failure.	Bedside glucose, electrolytes, renal/liver tests and protocol-based correction.
Infection	Fever, meningism, rash, immunosuppression or sepsis.	Cultures, antibiotics/antivirals when indicated, lumbar puncture only after safety assessment.
Structural	Head trauma, focal deficit, severe headache, cancer or anticoagulation.	Urgent CT/MRI and neurosurgical/stroke referral.
Drug/toxin/withdrawal	Overdose, stimulant use, alcohol/benzodiazepine withdrawal or missed medicine.	Poison-centre/senior advice, targeted antidote and supportive care.
Pregnancy/eclampsia	Pregnancy/postpartum, hypertension, headache, visual symptoms or abdominal pain.	Magnesium and BP/obstetric pathway under urgent specialist care.
Hypoxia/physiological stress	Respiratory disease, shock, fever, dehydration or sleep deprivation.	ABCDE, oxygen for hypoxaemia, fluids only when indicated and source treatment.

Investigations

Bedside glucose immediately; repeat after correction.
FBC, electrolytes including sodium/calcium/magnesium, renal/liver function, blood gas and pregnancy test when relevant.
ECG and continuous cardiac monitoring after repeated seizures or sedative/antiseizure medicine.
Drug levels when a therapeutic medicine may be subtherapeutic or toxic.
Blood cultures and infection testing for fever, sepsis or immunosuppression.
Urgent neuroimaging for first seizure, trauma, focal signs, persistent reduced consciousness, anticoagulant use, malignancy, severe headache or suspected stroke.
Lumbar puncture only after imaging/safety assessment when meningitis or encephalitis remains possible.
EEG for suspected non-convulsive status, unexplained coma or recurrent subtle events.

Special emergencies

Eclampsia: treat any seizure in pregnancy/postpartum with an eclampsia pathway until proven otherwise; magnesium, BP control, airway and urgent obstetric care are priorities.
Febrile seizure: protect the child, treat fever for comfort, evaluate the source and arrange medical review after a first or atypical episode.
Hypoglycaemic seizure: check glucose, give immediate glucose by a safe route and reassess consciousness and repeat level.
Seizure with trauma: maintain cervical-spine precautions where indicated, control bleeding and assess for intracranial injury.
Psychogenic nonepileptic events: protect from harm, avoid unnecessary repeated sedatives, seek specialist assessment and communicate respectfully; never assume this diagnosis before excluding life threats.
Alcohol/benzodiazepine withdrawal: monitor autonomic instability, treat seizures and involve addiction/medical services.

Postictal care

Place in recovery position if breathing and protect the airway; continue monitoring until baseline or a clear cause is identified.
Repeat GCS, pupils, glucose, vital signs and focused neurological examination; document recovery time.
Assess for aspiration, tongue injury, head injury, shoulder dislocation, burns, rhabdomyolysis and pregnancy complications.
Provide calm reassurance, reduce stimulation and avoid arguing about events the patient cannot recall.
Do not give oral medication, food or drink until alert and swallowing safely.
Escalate persistent confusion, new focal deficit, fever, severe headache, recurrent seizure, respiratory depression or abnormal vital signs.

Nursing interventions and monitoring

Time each seizure and record motor, eye, colour, breathing and recovery features; a witness video may help if obtained safely.
Maintain suction, oxygen, bag-mask equipment, IV/IO access and emergency medicines at the bedside.
After benzodiazepines or second-line medicines, monitor respiratory rate, SpO₂, BP, ECG, level of consciousness and infusion reactions.
Use seizure precautions, padded rails where appropriate, low bed, fall prevention and pressure-area care.
Measure temperature, urine output and fluid balance; monitor for hyperthermia, acidosis, renal injury and rhabdomyolysis in prolonged seizures.
Communicate drug doses, seizure times, last-known-well/recovery time, glucose and response in SBAR handover.

Discharge, prevention and education

Explain the likely cause, medicine plan, adherence, sleep, alcohol/drug triggers and safety precautions.
Provide a written seizure action plan: when to time the seizure, when to use prescribed rescue medicine and when to call emergency services.
Advise against driving, swimming alone, heights, open fires and dangerous machinery until cleared under local law and specialist advice.
Arrange first-seizure/neurology follow-up, EEG or imaging as indicated; do not discharge unexplained high-risk cases without a safe plan.
Teach family to use recovery position and never restrain or put objects in the mouth.
Discuss pregnancy, contraception, medication interactions and folic-acid planning with the clinician.

Clinical scenarios

Scenario 1 – Convulsive status: A patient has continuous generalized jerking for eight minutes. Protect from injury, ABCDE, glucose, oxygen for hypoxaemia, IV/IO access, benzodiazepine per protocol, continuous monitoring and early preparation for second-line medicine/airway support.

Scenario 2 – First seizure: A previously well adult has a five-minute seizure followed by confusion and unilateral weakness. Treat as a neurological emergency: check glucose, protect airway, urgent imaging and stroke/infection/trauma assessment rather than assuming epilepsy.

Scenario 3 – Postpartum seizure: A woman three days after delivery has headache, hypertension and a generalized seizure. Activate the eclampsia pathway, give magnesium and BP management under protocol, protect the airway and obtain urgent obstetric/critical-care review.

Common errors to avoid

Failing to time the seizure or waiting too long to treat status epilepticus.
Putting a spoon, fingers or medication into the mouth of a convulsing patient.
Restraining movements or leaving the patient alone.
Giving repeated sedatives without airway, breathing and BP monitoring.
Calling persistent coma “postictal” without considering non-convulsive status, hypoglycaemia, stroke, poisoning or infection.
Discharging a first seizure without injury assessment, cause evaluation and follow-up.
Assuming every seizure in pregnancy is epilepsy rather than eclampsia.

SEIZURE SAFE: S – Start the clock; E – Ensure airway and environment safety; I – Investigate glucose and causes; Z – Zero objects in the mouth; U – Use rescue medicine per protocol; R – Reassess breathing and recovery; E – Escalate status. SAFE – Suction/oxygen, Antiseizure medicine, Follow-up, Educate.

Revision questions

What is status epilepticus and why does treatment become more urgent with time?
List safe first-aid actions and actions that must never be performed during a seizure.
What are the ABCDE priorities during convulsive status?
Which reversible causes should be considered after a first seizure?
Why can a patient remain unconscious after visible jerking has stopped?
What monitoring is required after benzodiazepine or second-line antiseizure medicine?
Write a discharge education plan for a person with a first unprovoked seizure.

Key takeaways

Protect, time, oxygenate and check glucose before focusing on the label.
Status epilepticus is a medical emergency; benzodiazepines are first-line, followed by monitored second-line therapy when needed.
Search for infection, metabolic, structural, toxic, pregnancy-related and medication causes.
Persistent coma after convulsions may be non-convulsive status or another neurological emergency.
Monitoring, airway readiness, respectful first aid and a written seizure plan prevent avoidable harm.

References for further study

Seizures and Status Epilepticus: Emergency Recognition and Management Read More »

Stroke and Transient Ischaemic Attack: Emergency Recognition, Assessment and Management

Why this topic matters: Stroke is a time-critical emergency caused by interrupted cerebral blood flow or bleeding. Every minute of untreated ischaemia can worsen disability, but rapid recognition, organised prehospital triage, brain imaging and specialist treatment can change outcome. A transient ischaemic attack (TIA) has temporary neurological symptoms but is a warning of a possible completed stroke and still requires urgent assessment. This lesson is for EMT and emergency-medicine students; follow Uganda protocols, local stroke pathways and specialist direction for thrombolysis, thrombectomy, blood-pressure targets and anticoagulant reversal.

Learning objectives

Define ischaemic stroke, intracerebral haemorrhage, subarachnoid haemorrhage and TIA.
Recognise common and atypical stroke presentations using FAST and a structured neurological assessment.
Protect airway, breathing, circulation and brain perfusion while recording last-known-well time.
Explain emergency imaging, reperfusion eligibility, haemorrhage management and secondary prevention.
Plan nursing care, dysphagia precautions, monitoring, communication, transfer and rehabilitation referral.

What is a stroke?

An ischaemic stroke occurs when a cerebral artery is blocked by thrombus, embolus or severe stenosis, producing focal brain infarction. An intracerebral haemorrhage (ICH) is bleeding into brain tissue; subarachnoid haemorrhage (SAH) is bleeding into the subarachnoid space, often presenting with a sudden thunderclap headache. A TIA causes temporary focal neurological dysfunction without persistent infarction on imaging, but it is an emergency warning sign.

Stroke can affect movement, speech, vision, balance, sensation, swallowing, behaviour and consciousness. Posterior circulation strokes may cause dizziness, ataxia, diplopia, dysarthria or vomiting without obvious facial droop. Hypoglycaemia, seizure, migraine, sepsis, intoxication, Bell palsy and functional symptoms can mimic stroke, but a mimic must be considered alongside—not instead of—urgent stroke assessment.

FAST and red-flag recognition

Screen	Ask or look for	Emergency action
F – Face	New facial droop, asymmetry or numbness.	Note exact onset/last-known-well and activate stroke alert.
A – Arm	Sudden unilateral weakness, drift or loss of coordination.	Check both sides, glucose and time; keep patient safe from falls.
S – Speech	Slurring, word-finding difficulty, aphasia or inability to understand.	Record baseline language and arrange urgent imaging; do not give oral intake.
T – Time	When was the patient last known normal? Was the patient found on waking?	Time is treatment information: document witness details and call ahead.
Other red flags	Sudden severe headache, seizure, visual loss, diplopia, ataxia, collapse or reduced consciousness.	Consider posterior stroke, SAH or haemorrhage and transfer to resuscitation capability.

Prehospital and first-contact priorities

Recognise suspected stroke, note exact time last known well and perform a validated stroke screen.
Check airway, breathing, circulation, glucose, temperature and oxygen saturation. Treat hypoglycaemia promptly according to protocol.
Do not delay transport for unnecessary IV medicines, oral food/drink or a prolonged scene examination.
Keep the patient nil by mouth, position safely, protect weak limbs and bring medication/anticoagulant information.
Pre-alert a stroke-capable hospital with onset time, symptoms, glucose, anticoagulants, seizure/trauma history and estimated arrival.
Do not lower blood pressure in the field unless directed by a specific local protocol; cerebral perfusion may be pressure-dependent.

ABCDE and focused neurological examination

Step	Assessment	Actions
A – Airway	Gag/cough, secretions, vomiting, dysphagia and consciousness.	Position, suction, airway adjuncts and expert airway support if protective reflexes fail.
B – Breathing	Respiratory rate, work, SpO₂, aspiration and abnormal pattern.	Oxygen for hypoxaemia; ventilatory support if needed while protecting cerebral perfusion.
C – Circulation	Pulse, BP, ECG, perfusion, temperature and bleeding.	IV access, blood tests and cardiac monitoring; avoid hypotension and unnecessary rapid BP reduction.
D – Disability	GCS/AVPU, pupils, gaze, speech, facial movement, arm/leg power, sensation, neglect, ataxia and seizure.	Record a baseline stroke score where trained; repeat after any change or intervention.
E – Exposure	Trauma, rash, fever, neck stiffness, injection sites and medication patches.	Prevent hypothermia, identify infection/trauma and preserve privacy.

History that changes treatment

Last-known-well time, symptom discovery, wake-up stroke and progression.
Function and independence before the event, prior stroke/TIA and baseline deficits.
Anticoagulants, antiplatelets, recent surgery, bleeding, head trauma, pregnancy and known intracranial disease.
Seizure at onset, migraine history, hypoglycaemia, infection, drug exposure and malignancy.
Hypertension, diabetes, atrial fibrillation, sickle cell disease, HIV/TB, renal disease and smoking.
Witness contact, advance care plan, allergies and the patient’s communication needs.

Urgent investigations

Investigation	Purpose	Clinical point
Non-contrast CT brain	Exclude haemorrhage and identify early infarction.	All suspected acute strokes need urgent brain imaging before disease-specific therapy.
CT angiography/perfusion or MRI	Identify large-vessel occlusion, salvageable tissue or posterior circulation disease.	Use local availability and specialist selection; do not delay basic care awaiting advanced imaging.
Glucose and electrolytes	Detect stroke mimics and correct dangerous metabolic abnormalities.	Hypoglycaemia can mimic stroke; severe hyperglycaemia also worsens outcome.
FBC, coagulation, renal function and group/cross-match	Assess anaemia, platelets, anticoagulation, renal dosing and bleeding risk.	Draw promptly, but do not delay imaging or emergency transfer for routine results.
ECG and cardiac monitoring	Find AF, acute ischaemia or dangerous arrhythmia.	AF may be intermittent; monitoring informs secondary prevention.
Pregnancy testing and targeted tests	Guide imaging/medication decisions and investigate infection, toxicology or sickle complications.	Discuss risk-benefit urgently with the stroke team; pregnancy is not an automatic reason to delay lifesaving care.

Acute ischaemic stroke pathway

Activate the stroke team, record the treatment clock and obtain urgent brain imaging.
After haemorrhage is excluded, assess eligibility for intravenous thrombolysis using the current local protocol. Current international guidance supports rapid treatment in selected patients within a standard early window, with extended-window decisions based on advanced imaging and specialist criteria.
Assess for large-vessel occlusion and transfer or refer for endovascular thrombectomy when eligibility criteria and local capability are met.
Maintain oxygenation, normoglycaemia, normothermia and safe blood pressure; do not aggressively reduce BP unless indicated by the reperfusion or haemorrhage protocol.
Keep nil by mouth until a swallow screen is passed. Treat aspiration risk, fever, seizures and hypoglycaemia.
After acute therapy, begin antiplatelet/anticoagulant decisions only under the stroke team, considering infarct size, haemorrhage risk and AF.

Time principle: “Last known well” is a clinical variable. Document it in every handover. A patient who wakes with deficits may still be eligible for treatment after specialist imaging selection.

Intracerebral haemorrhage and subarachnoid haemorrhage

Suspect ICH with severe headache, vomiting, reduced consciousness, very high BP, focal deficit, seizure or anticoagulant use.
Suspect SAH with a sudden “worst-ever” thunderclap headache, neck stiffness, photophobia, collapse or brief loss of consciousness.
Protect airway and prevent aspiration; obtain urgent CT and call neurology/neurosurgery or a referral centre.
Manage BP according to the current haemorrhage protocol; avoid rapid uncontrolled reduction that worsens cerebral perfusion.
Reverse anticoagulation urgently with the prescribed agent and specialist guidance; do not give antithrombotics until haemorrhage is excluded.
Treat seizures, fever, hypoglycaemia, raised intracranial pressure and hydrocephalus with critical-care/neurosurgical support.
For SAH, monitor for rebleeding, vasospasm, hydrocephalus and electrolyte disturbance; early aneurysm treatment is specialist care.

Transient ischaemic attack

TIA symptoms resolve, but the risk of a completed stroke can be high, particularly soon after the event. Do not reassure the patient simply because speech or power has returned. Establish the exact symptoms and time, exclude hypoglycaemia and other mimics, arrange urgent brain/vascular assessment and start secondary prevention only after specialist evaluation.

Document focal symptoms witnessed by the patient or family, duration and complete resolution.
Check BP, glucose, ECG, medication adherence and vascular risk factors.
Escalate same day for high-risk features, recurrent episodes, carotid symptoms, AF or persistent uncertainty.
Provide clear return precautions for any recurrent FAST symptom, weakness, speech change, vision loss or severe headache.

Blood pressure, glucose and temperature

Measure BP correctly in both arms when appropriate and repeat manually if extreme or inconsistent.
In acute ischaemic stroke, BP treatment thresholds depend on whether reperfusion is planned and on other emergencies such as aortic dissection, ACS, heart failure or hypertensive encephalopathy.
In ICH, BP control follows the haemorrhage pathway and requires repeated measurements and neurological reassessment.
Correct hypoglycaemia immediately; avoid excessive glucose loading and monitor for recurrence.
Treat fever and investigate infection; maintain normothermia and avoid unnecessary sedatives that mask neurological deterioration.

Airway, dysphagia and aspiration prevention

Keep the patient nil by mouth until a trained swallow screen is passed, including tablets and water.
Position with head elevation when safe, suction secretions and provide oral care.
Refer for speech and language assessment; use prescribed texture modification, feeding assistance and aspiration precautions.
Escalate for declining consciousness, bulbar weakness, recurrent aspiration, hypoxia or inability to protect the airway.

Nursing care and monitoring

Perform scheduled neurological observations: GCS, pupils, limb power, speech, facial symmetry, gaze, glucose and vital signs.
Use pressure-area care, falls prevention, safe transfers and positioning of a weak shoulder/limb.
Monitor swallowing, nutrition, hydration, bladder/bowel function, fever, seizures and DVT risk.
Maintain IV access, check thrombolytic or anticoagulant safety and observe puncture sites for bleeding.
Use communication aids for aphasia, involve family and confirm understanding using teach-back.
Document door-to-imaging and door-to-treatment times, clinical changes, escalation and handover.

Complications in the first hours

Complication	Clues	Immediate response
Airway loss/aspiration	Wet voice, cough with fluids, falling SpO₂, vomiting or reduced consciousness.	Nil by mouth, suction, airway support, oxygen for hypoxaemia and urgent review.
Neurological worsening	New weakness, falling GCS, pupil change, seizure or severe headache.	Repeat ABCDE/glucose, urgent imaging and stroke/neurosurgical escalation.
Post-thrombolysis bleeding	Headache, vomiting, hypertension, worsening deficit, gum/urine/GI bleeding.	Stop infusion if running, urgent CT and follow the bleeding protocol.
Raised intracranial pressure	Reduced consciousness, vomiting, bradycardia with hypertension, irregular breathing or pupil changes.	Airway/ventilation support, head positioning and neurocritical-care consultation.
Seizure	Convulsions, eye deviation or unexplained altered mental state.	Protect airway, check glucose, treat seizure and search for cause.
DVT/PE and immobility complications	Leg swelling, pain, hypoxia or sudden tachycardia.	Prevention plan, mobilisation/physio and investigation if suspected.

Secondary prevention and rehabilitation

Determine the mechanism: AF, carotid disease, small-vessel disease, hypertension, diabetes, dyslipidaemia, sickle cell disease or other causes.
Use antiplatelet or anticoagulant therapy only as prescribed after haemorrhage risk is assessed.
Control BP, diabetes and lipids; support smoking cessation, healthy diet, activity and medication adherence.
Refer for physiotherapy, occupational therapy, speech/swallow therapy, psychology, social work and rehabilitation.
Screen for depression, cognitive impairment, neglect, falls, pressure injury, malnutrition and caregiver strain.
Provide a written emergency plan and teach family FAST recognition and when to call emergency services.

Clinical scenarios

Scenario 1 – Wake-up stroke: A person wakes with aphasia and right-sided weakness. Record the last time they were normal before sleep, check glucose/ABCDE, activate stroke alert, obtain urgent imaging and do not exclude reperfusion solely because onset was unwitnessed.

Scenario 2 – Suspected ICH: A patient with severe headache, vomiting, BP 230/120 and declining consciousness is brought by family. Protect the airway, monitor, check glucose, obtain urgent CT, call neurosurgery and follow the haemorrhage BP/reversal pathway.

Scenario 3 – Resolved TIA: A patient had 15 minutes of unilateral weakness that has resolved. Do not discharge without risk assessment. Document symptoms/time, ECG and glucose, arrange urgent specialist evaluation and provide FAST return precautions.

Common errors to avoid

Failing to record last-known-well time or treating arrival time as onset time.
Giving food, drink or tablets before a swallow assessment.
Lowering BP aggressively without considering stroke type, reperfusion eligibility and cerebral perfusion.
Assuming a normal early CT excludes ischaemic stroke.
Ignoring posterior circulation signs, hypoglycaemia, seizure or anticoagulant use.
Delaying transfer for nonessential tests or waiting for every laboratory result before imaging.
Calling a resolved event “just a TIA” and failing to arrange urgent follow-up.

STROKE TIME: S – Secure airway and glucose; T – Time last known well; R – Rapid stroke screen; O – Oxygen only if hypoxaemic; K – Keep nil by mouth; E – Escalate and image. TIME – Treat urgently, Investigate brain, Monitor neurology, Evaluate prevention.

Revision questions

Differentiate ischaemic stroke, ICH, SAH and TIA.
Why is last-known-well time more useful than the time a patient was found?
List the ABCDE priorities for a patient with suspected stroke.
Why must swallowing be assessed before oral intake?
What clinical features suggest posterior circulation stroke or SAH?
When should a patient be considered for thrombolysis or thrombectomy?
What warning signs require urgent repeat imaging after acute stroke treatment?

Key takeaways

Stroke and TIA are emergencies; rapid recognition and pre-alert improve access to treatment.
Record last-known-well time, glucose, anticoagulants and baseline function.
Urgent brain imaging distinguishes haemorrhage from ischaemia and guides therapy.
Protect airway, prevent aspiration, maintain oxygenation and avoid harmful BP or glucose extremes.
Reperfusion and haemorrhage treatments require specialist protocols and close monitoring.
Secondary prevention and rehabilitation begin during the acute admission.

References for further study

Stroke and Transient Ischaemic Attack: Emergency Recognition, Assessment and Management Read More »

Dysrhythmias: Recognition, ECG Assessment and Emergency Management

Why this topic matters: A dysrhythmia is an abnormal rate, rhythm, impulse or conduction pattern. It may be harmless, a sign of another illness, or the cause of shock, stroke, pulmonary oedema and sudden cardiac arrest. Emergency care begins with the patient’s physiology—not the monitor label. EMTs must decide whether the patient is stable, identify reversible causes, obtain a diagnostic ECG, treat life-threatening rhythms promptly and escalate to advanced cardiac-life-support teams. Use current Uganda protocols, local drug formularies and senior supervision for medication, cardioversion and pacing.

Learning objectives

Describe normal conduction and the main categories of tachyarrhythmia, bradyarrhythmia and heart block.
Use a systematic ECG approach including rate, rhythm, P waves, PR interval, QRS width and ST-T changes.
Recognise instability, cardiac arrest rhythms and reversible causes.
Outline emergency pathways for narrow-complex tachycardia, atrial fibrillation/flutter, wide-complex tachycardia, bradycardia, torsades, VF and heart block.
Plan monitoring, medication safety, synchronized cardioversion, pacing, nursing care and discharge education.

Electrical pathway and terminology

The sinoatrial node normally initiates an impulse that travels through the atria, atrioventricular node, His bundle, bundle branches and Purkinje network. Dysrhythmias can arise from abnormal automaticity, re-entry, triggered activity or failure of conduction. A tachyarrhythmia is usually a rate above 100/min in an adult at rest, while clinically important bradyarrhythmia is commonly below 50/min with symptoms or poor perfusion. The number alone never replaces assessment of perfusion and the cause.

Sinus tachycardia: a physiological response to pain, fever, hypoxia, dehydration, anaemia, shock or drugs; treat the cause.
Supraventricular tachycardia: usually a regular narrow-complex re-entry rhythm with sudden onset and termination.
Atrial fibrillation: absent organised P waves and an irregularly irregular ventricular response; raises thromboembolic stroke risk.
Atrial flutter: organised atrial activity, often saw-tooth flutter waves, with variable AV block.
Ventricular tachycardia: a broad-complex ventricular rhythm that may be stable, unstable or pulseless.
Bradyarrhythmia/heart block: sinus-node disease, AV block, drug toxicity, ischaemia, electrolyte disturbance or increased vagal tone.

First contact and immediate safety

Check responsiveness, breathing and a central pulse. If pulseless or not breathing normally, start CPR, attach a defibrillator and follow the cardiac-arrest algorithm.
Call for help, bring the resuscitation trolley, apply ECG/SpO₂/BP monitoring and place defibrillator pads early when the rhythm is fast, broad or unstable.
Look at the patient before the screen: chest pain, dyspnoea, syncope, shock, confusion, seizure, pulmonary oedema and severe ongoing symptoms indicate instability.
Obtain IV access, a 12-lead ECG during the rhythm and a repeat ECG after treatment. Save and label rhythm strips.
Give oxygen only for hypoxaemia or respiratory distress; unnecessary hyperoxia is not a substitute for rhythm treatment.

ABCDE and instability assessment

Finding	Why it matters	Emergency implication
Hypotension/shock	Reduced ventricular filling or output.	Prepare immediate synchronized cardioversion for a tachyarrhythmia or pacing/chronotropic support for symptomatic bradycardia.
Altered mental status/syncope	Cerebral hypoperfusion or malignant rhythm.	Move to resuscitation, protect airway and treat the rhythm urgently.
Ischaemic chest pain	Demand ischaemia or acute coronary syndrome.	12-lead ECG, ACS pathway and urgent rhythm control as indicated.
Acute heart failure/pulmonary oedema	Rapid ventricular rate or loss of atrial contribution has caused decompensation.	Oxygen/ventilatory support if hypoxaemic and urgent cardioversion or specialist therapy.
Ongoing seizure or peri-arrest appearance	Critically low cardiac output or ventricular instability.	Prepare for immediate electrical therapy and cardiac arrest management.

Systematic ECG approach

Rate: calculate ventricular rate and note whether it is slow, normal or fast.
Rhythm: regular, regularly irregular or irregularly irregular; compare monitor and pulse for pulse deficit.
P waves: present and consistent, hidden, fluttering, fibrillatory or dissociated from QRS?
PR interval: constant, prolonged, progressively lengthening or unrelated to QRS?
QRS width: narrow suggests supraventricular origin; a wide complex may be ventricular, aberrant, pre-excited or due to hyperkalaemia. Treat an uncertain wide-complex tachycardia as VT until proven otherwise.
QT interval: prolonged QT increases torsades risk, especially with hypokalaemia, hypomagnesaemia and QT-prolonging medicines.
ST-T changes: look for ischaemia, infarction, hyperkalaemia or post-arrhythmia changes.
Compare: obtain previous ECGs and document onset, duration, symptoms and treatments.

Reversible causes

Category	Examples	Actions
Hypoxia/hypovolaemia	Respiratory disease, bleeding, dehydration, sepsis.	ABCDE, oxygen for hypoxaemia, source control and cautious fluids/blood when indicated.
Electrolytes/metabolic	Hyperkalaemia, hypokalaemia, hypomagnesaemia, hypocalcaemia, acidosis, hypoglycaemia.	Urgent electrolytes/glucose; correct according to local protocol and ECG risk.
Ischaemia/inflammation	ACS, myocarditis, pericarditis, heart failure.	ECG/troponin, echo and disease-specific emergency pathway.
Drugs/toxins	Beta-blockers, calcium-channel blockers, digoxin, QT-prolonging drugs, stimulants, alcohol.	Medication review, poison-centre/senior advice and antidote where appropriate.
Temperature/endocrine	Fever, hypothermia, thyroid storm, adrenal crisis.	Temperature control and treatment of endocrine trigger.
Structural/physiological	Cardiomyopathy, pulmonary embolism, tamponade, sepsis, pregnancy.	Targeted imaging, specialist review and treat the underlying obstruction or shock.

Stable versus unstable tachyarrhythmia

Stability is determined by perfusion and symptoms, not by a fixed heart-rate threshold. Unstable features include hypotension, shock, altered mental state, ischaemic chest pain and acute pulmonary oedema/heart failure.

Unstable with a pulse: call for senior help, provide oxygen if hypoxaemic, sedate if feasible without delaying treatment and perform synchronized cardioversion using the local energy algorithm. If synchronization fails and the patient is crashing, follow the unsynchronized shock/ALS pathway.
Stable narrow regular tachycardia: vagal manoeuvres may be attempted in a monitored patient; use adenosine only when the rhythm and contraindications have been checked and a trained prescriber is present.
Stable irregular narrow rhythm: assess atrial fibrillation/flutter, rate, duration, anticoagulation status, heart failure and precipitating illness; involve a senior clinician for rate/rhythm and stroke-prevention decisions.
Stable wide-complex tachycardia: treat as VT until proven otherwise, monitor continuously, obtain expert advice and use a local antiarrhythmic protocol.

Narrow-complex supraventricular tachycardia

Usually sudden-onset, regular rhythm with narrow QRS and rates commonly 150–250/min.
Assess for pre-excitation, asthma, heart failure, hypotension and irregularity before adenosine.
In a cooperative stable adult, a monitored vagal manoeuvre may terminate AVNRT/AVRT; carotid sinus massage is avoided in carotid disease, bruit, prior stroke/TIA or uncertain diagnosis.
Adenosine is a rapid IV medicine requiring ECG capture, resuscitation equipment and explanation of transient flushing or chest discomfort. Follow the local dose and contraindication protocol.
If unsuccessful or contraindicated, obtain expert advice for an alternative agent or synchronized cardioversion.
Investigate triggers such as infection, stimulant use, thyroid disease, anaemia and electrolyte abnormality after conversion.

Atrial fibrillation and atrial flutter

AF produces chaotic atrial activity and an irregular ventricular response; flutter commonly produces organised atrial activity with variable conduction. Emergency priorities are haemodynamic stability, ventricular rate, duration/onset, precipitating illness and embolic risk.

If unstable, perform synchronized cardioversion under senior guidance; manage airway, oxygenation and sedation safely.
If stable, treat fever, hypoxia, sepsis, electrolyte disturbance, ACS, heart failure and thyrotoxicosis.
Obtain duration of the rhythm, previous episodes, anticoagulant adherence, bleeding risk and stroke-risk factors before elective cardioversion.
Rate-control medicines require caution in hypotension, acute heart failure, pre-excitation and asthma; selection is a prescriber decision.
Anticoagulation and cardioversion timing follow current local/ESC guidance; never give or stop anticoagulants casually.
Document rhythm strips before and after treatment and arrange cardiology follow-up.

Wide-complex tachycardia and ventricular tachycardia

A broad-complex tachycardia may be VT, SVT with aberrancy, pre-excited AF or metabolic toxicity. Because misclassification can be fatal, an uncertain regular broad-complex rhythm is managed as VT.

Check pulse and perfusion. Pulseless VT is a shockable cardiac-arrest rhythm: CPR, defibrillation and ALS medicines according to protocol.
With a pulse but instability, perform synchronized cardioversion immediately.
With a stable monomorphic VT, continuous monitoring, IV access, 12-lead ECG, senior consultation and a local antiarrhythmic pathway are required.
Polymorphic VT or torsades requires urgent correction of QT-prolonging causes, magnesium according to protocol and immediate defibrillation if unstable or pulseless.
Look for ACS, cardiomyopathy, hypokalaemia, hypomagnesaemia, drug toxicity and inherited channelopathy.
Do not give AV-nodal blockers to an irregular wide-complex rhythm that could be pre-excited AF.

Bradycardia and heart block

Bradycardia may be physiological or a sign of infarction, hypoxia, hypothermia, drug toxicity, hyperkalaemia, raised intracranial pressure or conduction-system disease. Treat symptomatic bradycardia with poor perfusion rather than treating a number in isolation.

Assess airway, breathing, circulation, mental state, chest pain, syncope and shock; apply monitor, pads and obtain ECG.
Correct reversible causes, stop suspected causative medicines and check glucose/electrolytes.
For unstable symptomatic bradycardia, follow the local atropine and pacing algorithm. Prepare transcutaneous pacing early when high-grade AV block is suspected.
If atropine is ineffective or contraindicated, use chronotropic infusion and arrange transvenous pacing under senior critical-care/cardiology direction.
Mobitz II, complete heart block, alternating bundle-branch block, ventricular pauses and recurrent syncope require urgent specialist review and monitored admission.
Provide analgesia/sedation for pacing when safe, but never allow sedation to delay treatment of deteriorating perfusion.

Atrial and ventricular ectopics

Isolated premature beats are common and may be triggered by stress, caffeine, hypoxia, electrolyte abnormality or structural disease. Frequent, multifocal or repetitive ectopics, couplets, runs, syncope, chest pain or a family history of sudden death require ECG review, electrolytes and specialist assessment.

Investigations and disposition

12-lead ECG during symptoms and repeat after conversion; save rhythm strips.
FBC, glucose, electrolytes including potassium/magnesium/calcium, renal function, troponin and pregnancy test where relevant.
Chest imaging, blood gas, echocardiography or toxicology tests when guided by presentation.
Admit unstable patients, those needing cardioversion/pacing, wide-complex rhythms, high-grade block, prolonged QT, ACS, heart failure or serious underlying disease.
Discharge only after a senior review confirms a safe rhythm, corrected triggers, reliable follow-up and explicit return precautions.

Medication and procedure safety

Medication safety: Antiarrhythmics, adenosine, beta-blockers, calcium-channel blockers, digoxin, magnesium, atropine and sedatives can worsen hypotension, bronchospasm, conduction block or QT prolongation. Check rhythm, blood pressure, contraindications, interactions, renal function and the local formulary before administration. Record exact dose, route, time and response.

Attach ECG and defibrillator monitoring before IV antiarrhythmics or adenosine.
Use synchronized mode for cardioversion when a pulse is present; confirm synchronization markers before delivering a shock.
Ensure analgesia/sedation is titrated and airway equipment is available for electrical therapy.
After a shock or medicine, reassess rhythm, perfusion, ECG intervals, electrolytes and neurological status.

Nursing interventions and monitoring

Record symptoms, onset, rhythm, vital signs, consciousness, chest pain score, oxygen requirement and urine output.
Maintain continuous ECG for unstable or treated patients; print and label rhythm strips before/after interventions.
Check IV patency and flush adenosine rapidly through a proximal line as prescribed; document transient effects and conversion.
Monitor for hypotension, bradycardia, bronchospasm, worsening heart failure, QT prolongation, sedation and recurrent dysrhythmia.
For pacing, confirm electrical and mechanical capture, skin condition, comfort and battery/pad placement.
Use SBAR handover with rhythm diagnosis, stability, treatment, response, pending tests and escalation plan.

Patient education and prevention

Explain the rhythm in plain language and provide written medicine and follow-up instructions.
Review stimulant use, alcohol, smoking, sleep, thyroid disease, medication adherence and electrolyte-loss illness.
Teach return precautions: syncope, chest pain, breathlessness, new weakness, sustained palpitations, seizure or severe dizziness.
Patients prescribed anticoagulants need adherence, bleeding precautions and review of interacting medicines.
Patients with implanted devices need device-card information, wound care and urgent review for shocks, syncope or fever.

Clinical scenarios

Scenario 1 – Unstable narrow tachycardia: A patient with a regular narrow-complex rhythm is hypotensive and confused. Call for help, apply pads, provide oxygen if hypoxaemic, prepare synchronized cardioversion and do not delay for repeated drug trials.

Scenario 2 – Stable SVT: A young adult has sudden regular palpitations, normal BP and no chest pain. Obtain a 12-lead ECG, try a safe monitored vagal manoeuvre, then follow the local adenosine pathway with resuscitation equipment ready.

Scenario 3 – Complete heart block: An older patient with syncope has P waves unrelated to wide QRS complexes and a rate of 28/min. Place pads, correct reversible causes, seek urgent pacing/cardiology support and monitor continuously.

Scenario 4 – Pulseless VT: A patient collapses and the monitor shows a shockable broad-complex rhythm. Start CPR, defibrillate according to ALS protocol, give indicated medicines and search for reversible causes.

Common errors to avoid

Treating the monitor number without assessing perfusion or the underlying cause.
Calling every fast rhythm SVT or every broad rhythm SVT with aberrancy.
Giving AV-nodal blockers to possible pre-excited AF or unstable wide-complex tachycardia.
Delaying cardioversion in shock, ischaemia, pulmonary oedema or altered consciousness.
Ignoring electrolyte abnormalities, QT-prolonging medicines, ACS, sepsis or hypoxia.
Failing to print an ECG, document onset or reassess after conversion.
Discharging a patient with high-grade block, recurrent syncope or unexplained ventricular arrhythmia.

RHYTHM check: R – Recognise perfusion and red flags; H – Hypoxia, haemorrhage and reversible causes; Y – Your 12-lead ECG; T – Tachy or brady pathway; H – Help, pads and handover; M – Medicines and monitoring.

Revision questions

What features make a tachyarrhythmia unstable?
How do you systematically analyse a 12-lead ECG?
Why should an uncertain broad-complex tachycardia be treated as VT?
Describe the immediate care of pulseless VT/VF.
When is synchronized cardioversion indicated?
What reversible causes should be sought in bradycardia and tachycardia?
List the nursing observations required after adenosine, cardioversion or pacing.

Key takeaways

Stability and perfusion determine urgency more than the heart rate alone.
Obtain and interpret a 12-lead ECG while treating ABCDE threats.
Unstable tachyarrhythmia needs synchronized cardioversion; pulseless VT/VF needs defibrillation and CPR.
Symptomatic bradycardia may require atropine, pacing or chronotropic support.
Correct hypoxia, ischaemia, sepsis, electrolyte disturbance and drug toxicity.
Document rhythm strips, treatment response and a safe follow-up plan.

References for further study

Dysrhythmias: Recognition, ECG Assessment and Emergency Management Read More »

Cardiac Tamponade: Recognition, Assessment and Emergency Management

Why this topic matters: Cardiac tamponade is obstructive shock caused by pressure from pericardial fluid, blood or pus that prevents normal cardiac filling. It can follow trauma, myocardial rupture, aortic dissection, infection, malignancy, renal failure, autoimmune disease or an invasive procedure. The patient may deteriorate suddenly, and classic signs can be absent. Emergency providers must recognise the pattern, support preload without delaying definitive drainage, use bedside ultrasound when trained and escalate immediately.

Learning objectives

Explain how pericardial pressure reduces venous return, stroke volume and cardiac output.
Recognise compensated and decompensated tamponade, including trauma and peri-arrest presentations.
Perform a focused history, examination, ABCDE assessment and differential diagnosis.
Describe investigations, temporary support, urgent drainage pathways and nursing care.
Identify complications, common errors and safe referral or post-procedure monitoring.

Definition and physiology

The pericardial sac normally contains a small amount of lubricating fluid. When fluid accumulates faster than the pericardium can stretch, intrapericardial pressure rises. The thin-walled right atrium and right ventricle are compressed first, reducing diastolic filling. Reduced preload lowers stroke volume; tachycardia and vasoconstriction initially compensate. As compensation fails, hypotension, obstructive shock, pulseless electrical activity and cardiac arrest may follow.

The speed of accumulation matters more than volume. A rapidly bleeding traumatic effusion can cause tamponade with a relatively small volume, while a slowly developing inflammatory or malignant effusion may be large before collapse. Positive-pressure ventilation and induction drugs can abruptly reduce venous return and precipitate arrest in a preload-dependent patient.

Safety point: Beck’s triad—hypotension, muffled heart sounds and raised jugular venous pressure—is neither sensitive nor required. Do not wait for all three signs. Unexplained obstructive shock, narrow pulse pressure, pulsus paradoxus, distended neck veins or a pericardial effusion on ultrasound requires urgent senior review.

Causes and risk settings

Cause or setting	Examples	Clues that change the pathway
Trauma	Penetrating chest injury, blunt rupture, iatrogenic line or procedure injury.	Suspect haemopericardium; activate trauma and surgical pathways. Do not delay transfer for nonessential tests.
Acute aortic syndrome	Ascending aortic dissection with haemopericardium.	Sudden tearing pain, pulse/BP difference, neurological deficit; controlled drainage may be a bridge to surgery.
Inflammatory/infectious	Pericarditis, tuberculosis, bacterial or viral infection.	Fever, weight loss, inflammatory symptoms; send fluid studies and treat the cause after drainage.
Malignancy	Lung, breast, haematological or metastatic cancer.	Recurrent effusion; cytology, oncology and longer-term drainage planning.
Renal/autoimmune	Uraemia, lupus, rheumatoid disease and vasculitis.	Renal or rheumatology input; assess for coagulopathy and medication effects.
Post-infarction or post-surgery	Free-wall rupture, post-pericardiotomy syndrome or surgical bleeding.	Recent procedure/MI; urgent cardiothoracic consultation.

Recognition: symptoms and signs

Progressive dyspnoea, orthopnoea, chest pressure, fatigue, dizziness or syncope.
Tachycardia, hypotension, narrow pulse pressure, cool peripheries, delayed capillary refill and oliguria.
Raised jugular venous pressure, pulsus paradoxus, muffled heart sounds or unexplained tachypnoea.
Restlessness, confusion or reduced consciousness from low cerebral perfusion.
Electrical alternans or low-voltage QRS on ECG may occur but a normal ECG does not exclude tamponade.
Shock after a chest injury, central-line insertion, pacemaker procedure, cardiac surgery or anticoagulation.
In children: poor feeding, tachypnoea, irritability, hepatomegaly, weak pulses or sudden deterioration may be more prominent than classic signs.

Triage and initial contact

Move an unstable patient to a resuscitation area and call the senior emergency clinician, cardiology and cardiothoracic/surgical team.
Apply continuous ECG, pulse oximetry and frequent non-invasive BP; obtain two large-bore IV lines if feasible.
Ask about onset, trauma, recent procedures, malignancy, infection, renal disease, anticoagulants and prior pericardial disease.
Record last-known-well time, prehospital events, fluids, analgesia, bleeding and response to treatment.
Use a focused ultrasound pathway if trained and equipment is available; never delay definitive transfer for an inexperienced scan.

ABCDE assessment

Step	Assessment	Actions
A – Airway	Speech, secretions, vomiting, consciousness and airway patency.	Position and suction; call anaesthesia early. Avoid unnecessary sedation or intubation before restoring preload/definitive drainage.
B – Breathing	Rate, effort, SpO₂, chest symmetry, breath sounds and signs of tension pneumothorax.	Give oxygen for hypoxaemia/distress; treat immediately reversible chest causes; prepare assisted ventilation cautiously.
C – Circulation	Pulse, BP, pulse pressure, JVP, capillary refill, skin, urine output and bleeding.	Small cautious fluid challenge may bridge hypotension; activate blood products for haemorrhage and prepare drainage/surgery.
D – Disability	GCS/AVPU, pupils, glucose, agitation, syncope and neurological deficits.	Check glucose, correct hypoxia, document perfusion changes and reassess after every intervention.
E – Exposure	Chest wounds, procedure sites, fever, rash, surgical scars and peripheral oedema.	Control external bleeding, prevent hypothermia, preserve dignity and look for infection or malignancy clues.

Focused ultrasound and investigations

Test	What it can show	Limitations and action
POCUS/eFAST	Pericardial fluid, right-sided chamber collapse, plethoric IVC and associated trauma findings.	Interpret with the clinical picture; an effusion alone is not synonymous with tamponade. Repeat if the patient changes.
Formal echocardiography	Effusion size/location, right atrial/ventricular diastolic collapse, respiratory variation and ventricular function.	Urgent echo supports drainage planning but must not delay life-saving decompression in profound instability.
ECG	Sinus tachycardia, low voltage or electrical alternans.	Findings may be absent; a normal ECG does not rule out tamponade.
Chest radiograph	Enlarged cardiac silhouette, pleural effusion or alternative lung disease.	May be normal in acute haemopericardium; never use it to delay drainage.
Blood tests	FBC, group/cross-match, electrolytes, renal/liver function, coagulation, troponin and inflammatory markers.	Take samples while resuscitating; correct major coagulopathy with specialist advice but do not delay emergency care.
CT/angiography	Dissection, malignancy, trauma and alternative diagnoses in a stable patient.	Do not transport an unstable patient away from resuscitation for CT.

Differential diagnosis of obstructive shock

Tension pneumothorax: unilateral absent breath sounds, tracheal deviation, severe respiratory distress and obstructive shock.
Massive pulmonary embolism: sudden dyspnoea, hypoxia, right-heart strain and risk factors for thrombosis.
Massive haemorrhage: external bleeding, abdominal/pelvic blood loss, trauma or falling haemoglobin.
Right-ventricular infarction: inferior ECG changes, clear lungs, raised JVP and preload dependence.
Septic or cardiogenic shock: vasodilation, fever, myocardial dysfunction or pulmonary oedema may coexist with an effusion.
Acute aortic dissection: abrupt pain, pulse deficit, neurological signs or a new aortic regurgitation murmur.

Immediate stabilisation while help arrives

Keep the patient calm, supine or in the position that maintains breathing and perfusion; avoid sudden upright positioning in severe shock.
Give oxygen for hypoxaemia or respiratory distress, attach a defibrillator and prepare for peri-arrest deterioration.
Obtain IV access and blood samples. If hypotensive and no pulmonary oedema is present, a small, carefully reassessed isotonic fluid bolus may temporarily improve preload.
Use vasopressor/inotrope support only under senior critical-care direction; these are bridges, not definitive treatment.
Avoid routine diuretics, venodilators and excessive positive-pressure ventilation because they can reduce venous return.
Do not allow temporary measures to delay urgent echo-guided drainage or surgical decompression.

Definitive management

Definitive treatment is removal of the compressing pericardial fluid and treatment of its cause. In a haemodynamically significant effusion, urgent image-guided pericardiocentesis or surgical drainage is performed by a trained team. A surgical pericardial window or thoracotomy may be preferred for traumatic bleeding, purulent effusion, recurrent malignant disease, clot that cannot be aspirated or a suspected structural rupture.

Call cardiology, cardiothoracic surgery and anaesthesia early; prepare blood products for traumatic or operative bleeding.
Use echocardiographic guidance whenever possible and maintain sterile technique, monitoring and resuscitation readiness.
Send aspirated fluid for cell count, chemistry, Gram stain/culture, tuberculosis studies and cytology when relevant.
In suspected aortic dissection, uncontrolled drainage can worsen bleeding; specialist-directed controlled decompression is a bridge to urgent surgery.
After drainage, reassess BP, pulse pressure, JVP, urine output, lactate, mental status, echo findings and recurrence.
Identify and treat the cause: infection, uraemia, malignancy, inflammatory disease, anticoagulation or trauma.

Peri-procedural nursing care

Explain the emergency procedure as far as the patient’s condition allows, verify identity, allergies, consent process and recent anticoagulants.
Prepare sterile equipment, ultrasound, local anaesthetic, oxygen, suction, airway equipment, defibrillator and emergency drugs.
Record continuous ECG, SpO₂ and frequent BP; observe for sudden pain, arrhythmia, hypotension, vasovagal response or respiratory deterioration.
Assist with positioning and reassure the patient; maintain asepsis and label all fluid samples accurately.
After drainage, inspect the site, check drain patency and output, monitor recurrence and document the response.
Escalate fever, persistent shock, increasing drainage, fresh blood, new chest pain, pulsus paradoxus, falling urine output or altered consciousness.

Cardiac arrest and peri-arrest tamponade

Start high-quality CPR and follow the ALS algorithm, while actively searching for reversible causes. Tamponade often produces PEA. A trained clinician may use ultrasound during brief rhythm checks to support the diagnosis without prolonged pauses. In traumatic arrest or post-cardiac-surgery arrest, emergency thoracotomy/resternotomy or surgical decompression may be required according to local capability. Needle drainage during arrest is not a substitute for definitive surgical treatment when blood or clot is present.

Critical caution: Positive-pressure ventilation can markedly reduce venous return. If airway control is unavoidable, use the least haemodynamically harmful approach, maintain oxygenation and ensure the drainage/surgical team is ready.

Complications and post-drainage observation

Complication	Early clues	Response
Recurrent tamponade	Falling BP, rising JVP, tachycardia, oliguria or recurrent dyspnoea.	Repeat bedside assessment/echo and call the drainage team urgently.
Myocardial or coronary injury	Chest pain, ST changes, arrhythmia, bleeding or sudden collapse.	Stop and reassess procedure, resuscitate and obtain urgent cardiology/surgical help.
Pneumothorax/pleural injury	New unilateral absent breath sounds, hypoxia or respiratory distress.	Immediate ABCDE and chest decompression pathway if tension is suspected.
Vasovagal hypotension	Bradycardia, pallor, nausea and transient hypotension.	Supine positioning, monitoring and senior review; exclude recurrent tamponade.
Pericardial decompression syndrome	Pulmonary oedema, hypotension or ventricular dysfunction after rapid drainage.	Critical-care management, cautious fluid/vasoactive support and echo-guided review.
Infection/bleeding	Fever, erythema, purulent output, falling haemoglobin or haemodynamic change.	Culture, antibiotics, blood products and procedural/surgical review.

Monitoring and handover

Trend HR, BP, pulse pressure, respiratory rate, SpO₂, temperature, mental state, capillary refill and urine output.
Document oxygen device, fluids, vasopressors, analgesia, procedure time, volume and appearance of fluid, samples sent and patient response.
Use SBAR to communicate cause, current stability, ultrasound findings, anticoagulants, blood availability and the definitive plan.
Repeat ECG, blood tests and echo according to acuity; watch for recurrence and post-drainage ventricular dysfunction.
Transfer to a monitored high-dependency or cardiac unit when shock, drain, recurrent effusion or significant underlying disease is present.

Prevention and patient education

Use ultrasound and trained operators for central lines and invasive procedures where available.
Review anticoagulation and bleeding risk before elective procedures; never stop essential therapy without a senior decision.
Explain the cause of the effusion, drain care, fever/bleeding warning signs and follow-up echo or cardiology appointments.
Teach patients with recurrent pericarditis or malignancy to seek care early for new dyspnoea, syncope or chest pressure.
Ensure tuberculosis, renal, autoimmune, malignancy or infectious work-up is completed and linked to follow-up services.

Clinical scenarios

Scenario 1 – Subacute effusion: A patient with weight loss and progressive dyspnoea has tachycardia, raised JVP and narrow pulse pressure. Begin ABCDE, monitor continuously, obtain urgent echo and call cardiology. Do not discharge because the patient is still talking comfortably.

Scenario 2 – Penetrating injury: A patient with a chest wound is hypotensive with a pericardial collection on eFAST. Control external bleeding, activate the trauma/surgical pathway, prepare blood and transfer directly for definitive decompression; do not send the unstable patient for CT.

Scenario 3 – Collapse after induction: A patient with known effusion becomes profoundly hypotensive after positive-pressure ventilation. Suspect loss of preload and tamponade worsening, call for immediate drainage, reassess for tension pneumothorax and support circulation under senior guidance.

Common errors to avoid

Waiting for Beck’s triad or a chest radiograph before acting.
Confusing pericardial effusion with tamponade without assessing haemodynamics and chamber collapse.
Giving large fluid volumes, diuretics or vasodilators without reassessment.
Inducing anaesthesia or applying high airway pressures before the preload problem is addressed.
Performing blind pericardiocentesis when trained echo-guided drainage or surgery is available, except in a true peri-arrest situation directed by senior clinicians.
Ignoring trauma, aortic dissection, anticoagulation or post-procedure bleeding as causes.
Failing to monitor for recurrence or post-drainage complications.

TAMPONADE check: T – Think obstructive shock; A – ABCDE and access; M – Monitor continuously; P – POCUS/echo; O – Oxygen only when indicated; N – No delay to drainage; A – Avoid preload-reducing ventilation; D – Drain and diagnose the cause; E – Escalate and evaluate recurrence.

Revision questions

How does rapid pericardial fluid accumulation reduce cardiac output?
Why can a large chronic effusion be less immediately dangerous than a smaller traumatic haemopericardium?
List six clinical or ultrasound features that should raise suspicion for tamponade.
What temporary measures can support a hypotensive patient while drainage is arranged?
Why can positive-pressure ventilation precipitate arrest?
When may surgical drainage be preferred to needle pericardiocentesis?
List the post-procedure observations and complications requiring urgent escalation.

Key takeaways

Cardiac tamponade is obstructive shock and can be rapidly fatal.
Clinical signs may be incomplete; use focused ultrasound when trained and available.
Support preload carefully, avoid harmful delays and arrange urgent drainage.
Treat trauma, dissection, infection, malignancy or uraemia as the underlying cause.
Monitor closely after decompression because recurrence and post-drainage complications can occur.

References for further study

Cardiac Tamponade: Recognition, Assessment and Emergency Management Read More »