Emergency Medicine
Hyperkalemia Emergency Treatment
Treat hyperkalemia as an electrical emergency when potassium exceeds 6.0 mmol/L or ECG toxicity is present: monitor, stabilize myocardium with IV calcium, shift potassium intracellularly, remove total-body potassium, and reassess for rebound or dialysis need.
First Minutes
Identify patients requiring monitored emergency treatment
Use potassium concentration, electrical toxicity, and clinical context to determine urgency.
Place patients with potassium greater than 6.0 mmol/L on continuous cardiac monitoring and obtain a 12-lead ECG. Refer patients with potassium greater than 6.0 mmol/L or any hyperkalemia-associated ECG change to an emergency setting capable of immediate monitored treatment. Wolters Kluwer+2Wolters KluwerAcute hyperkalemia in the emergency department - OvidWolters KluwerRecent Advances in Nephrology: The Research Gaps... : Nigerian Journal of Clinical PracticeWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency Medicine
Do not use a normal ECG to exclude clinically consequential hyperkalemia. Reported manifestations include peaked T waves, PR prolongation, P-wave flattening, QRS widening, and ventricular fibrillation, but ECG changes need not progress sequentially and ventricular fibrillation can occur without preceding classic findings. Wolters KluwerWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency Medicine
Repeat potassium promptly when hemolysis, collection artifact, or pseudohyperkalemia is plausible, but do not allow confirmation to delay therapy in a patient with potassium greater than 6.0 mmol/L plus ECG toxicity or clinical instability. Obtain rapid biochemical confirmation and assess for acute kidney injury, chronic kidney disease, end-stage kidney disease, metabolic acidosis, diabetes, heart failure, and medication contributors. Wolters Kluwer+2Wolters KluwerRecent Advances in Nephrology: The Research Gaps... : Nigerian Journal of Clinical PracticeWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicineWolters KluwerEMCREG-International Multidisciplinary Consensus... : Cardiorenal Medicine
Treat the ECG, not a potassium value alone: new conduction delay, bradyarrhythmia, QRS widening, or ventricular dysrhythmia requires immediate membrane stabilization. Wolters Kluwer+1Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Review ACE inhibitor, ARB, potassium-sparing diuretic, and other potassium-raising exposures while assessing renal function and ongoing potassium burden. Wolters KluwerWolters KluwerEMCREG-International Multidisciplinary Consensus... : Cardiorenal Medicine
If emergent hyperkalemia prompts temporary interruption of a renin-angiotensin system inhibitor, plan reassessment and reinitiation after resolution when the original indication remains present. ScienceDirectScienceDirectKDIGO 2021 Clinical Practice Guideline for the Management of Blood Pressure in Chronic Kidney Disease
Electrical Toxicity
Use IV calcium for hyperkalemic ECG abnormalities
Calcium is the first medication when hyperkalemia is producing electrical instability.
Administer IV calcium immediately when hyperkalemia-associated ECG changes are present. The KDIGO emergency algorithm lists either calcium gluconate 1 g IV, repeatable up to three 1-g doses using 10 mL of 10% solution per dose, or calcium chloride 1 g IV using 10 mL of 10% solution. Wolters Kluwer+1Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Select calcium as myocardial protection while concurrently initiating therapies that shift and remove potassium. It is not a potassium-lowering therapy; failure to pair calcium with redistribution and elimination permits recurrent electrical toxicity as serum potassium remains elevated. Wolters Kluwer+1Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Use calcium gluconate 1 g IV as a listed emergency regimen; the referenced algorithm permits up to three sequential 1-g doses. PubMedPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Calcium chloride 1 g IV is an alternative listed in the same algorithm. PubMedPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Continue ECG monitoring after calcium because potassium-associated conduction abnormalities may recur until potassium is redistributed and definitively removed. Wolters Kluwer+1Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Temporizing Therapy
Shift potassium intracellularly while arranging elimination
Redistribution buys time; it does not reduce total-body potassium.
Use IV regular insulin with dextrose as a principal rapid intracellular-shift therapy. A KDIGO emergency regimen is regular insulin 5 units IV plus 25 g glucose IV; other guideline-referenced regimens use 5 to 10 units of IV insulin with 25 to 50 g dextrose. PubMed+1PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferencePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMC A commonly used alternative is 10 units of regular insulin IV with 25 g dextrose. PubMedPubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal disease
Add nebulized albuterol 10 mg when further rapid redistribution is needed and no patient-specific concern precludes beta-agonist use. Insulin and albuterol may have additive effects, although albuterol is ineffective in some patients; expected adverse effects include tremor, palpitations, headache, and mild hyperglycemia. PubMed+1PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Reserve IV sodium bicarbonate for patients with concomitant metabolic acidosis rather than routine use in normoacidic hyperkalemia. The KDIGO algorithm lists 50 mmol IV over 15 minutes; bicarbonate has little potassium-lowering effect without acidosis and is not indicated as routine acute therapy. PubMed+2PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceccjmDiagnosis and treatment of hyperkalemia
Check bedside glucose before IV insulin and serially afterward; kidney dysfunction increases concern for delayed hypoglycemia. PubMed+1PubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal diseasePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMC
In ESRD, provide dextrose support and monitor glucose for at least 3 hours after insulin-based treatment. PubMedPubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal disease
Do not regard insulin, albuterol, or bicarbonate as definitive therapy; each acts by transcellular redistribution and must be followed by a potassium-removal plan. ccjm+1ccjmDiagnosis and treatment of hyperkalemiaKidney InternationalTreatment of hyperkalemia: something old, something new
Prevent and detect insulin-associated hypoglycemia
Hypoglycemia is a major treatment complication after insulin-dextrose, particularly in reduced kidney function. Published incidence estimates vary from 6.1% to 75%, and one ESRD study reported blood glucose below 55 mg/dL at 1 hour in 9 of 12 patients receiving 10 units of IV regular insulin with 25 g dextrose. PubMed+1PubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal diseasePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMC
Use serial glucose measurements after insulin rather than a single post-treatment value. Wolters Kluwer+2Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal diseasePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMC
Maintain at least 3 hours of glucose monitoring in ESRD after insulin treatment. PubMedPubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal disease
Definitive Therapy
Remove potassium and escalate early to hemodialysis when needed
A successful emergency plan includes a route for total-body potassium elimination.
Hemodialysis is the preferred and most effective method of urgent potassium elimination. Arrange it early for severe hyperkalemia when kidney function is too poor for meaningful renal potassium excretion, when hyperkalemia persists despite medical management, or when recurrent elevation is expected while temporizing therapies wear off. asn-online+2asn-online[PDF] Kidney News - May 2010 - American Society of NephrologyPubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
If the patient has sufficient kidney function, loop diuretics can support urinary potassium removal; their utility depends on preserved renal function. asn-online+1asn-online[PDF] Kidney News - May 2010 - American Society of NephrologyccjmDiagnosis and treatment of hyperkalemia Correct the precipitating process that is limiting potassium excretion or creating ongoing release, including acute kidney injury, chronic kidney disease, metabolic acidosis, and potassium-raising medication combinations. Wolters Kluwer+1Wolters KluwerEMCREG-International Multidisciplinary Consensus... : Cardiorenal MedicineccjmDiagnosis and treatment of hyperkalemia
Gastrointestinal binders may contribute to potassium elimination but should not replace immediate calcium, insulin-dextrose, albuterol, or dialysis planning in ECG-toxic hyperkalemia. The KDIGO algorithm lists sodium polystyrene sulfonate 15 to 60 g orally or rectally without sorbitol and sodium zirconium cyclosilicate 10 g orally three times daily; it states that patiromer is not advisable for emergency use because onset is approximately 7 hours. PubMedPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Avoid sodium polystyrene sulfonate with sorbitol; the agent has been associated with rare gastrointestinal toxicity and long-term use is poorly tolerated. PubMed+1PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceccjmDiagnosis and treatment of hyperkalemia
Use binders as adjunctive elimination therapy only after determining whether dialysis is required. PubMed+1PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
When an ACE inhibitor or ARB was held for emergent hyperkalemia, reassess and restart after the adverse event resolves when clinically indicated rather than leaving the patient indefinitely without disease-modifying therapy. ScienceDirectScienceDirectKDIGO 2021 Clinical Practice Guideline for the Management of Blood Pressure in Chronic Kidney Disease
After Initial Treatment
Recheck potassium, glucose, ECG status, and definitive elimination
Monitoring must detect recurrent electrical toxicity, treatment complications, and rebound hyperkalemia.
Reevaluate serum potassium frequently after treatment to document response and identify recurrence after redistribution therapy. Continue cardiac monitoring until the acute electrical risk has resolved and a durable potassium-elimination strategy is in place. Wolters Kluwer+1Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
After IV insulin, use serial glucose testing because hypoglycemia can occur despite dextrose coadministration and may be delayed in ESRD or reduced kidney function. In ESRD, monitor for at least 3 hours after insulin treatment. PubMed+1PubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal diseasePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMC
Before disposition, establish why potassium rose and whether potassium can be eliminated without dialysis. Patients with persistent severe elevation, ECG abnormalities, inadequate renal clearance, or need for urgent dialysis require continued monitored care rather than discharge after a transient laboratory improvement. Wolters Kluwer+3Wolters KluwerRecent Advances in Nephrology: The Research Gaps... : Nigerian Journal of Clinical PracticeWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Repeat potassium after temporizing treatment and after definitive removal to detect rebound. Wolters Kluwer+2Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferencePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMC
Reassess acid-base status when bicarbonate was used; its acute role is linked to concomitant metabolic acidosis. PubMed+1PubMedHyperkalemia management in the emergency department - PMC - NIHccjmDiagnosis and treatment of hyperkalemia
Reconcile potassium-raising medications and plan follow-up for reintroduction of indicated renin-angiotensin system inhibition after the emergency resolves. ScienceDirect+1ScienceDirectKDIGO 2021 Clinical Practice Guideline for the Management of Blood Pressure in Chronic Kidney DiseaseWolters KluwerEMCREG-International Multidisciplinary Consensus... : Cardiorenal Medicine
Common questions
Should a normal ECG delay emergency treatment of severe hyperkalemia?
No. ECG abnormalities are an important marker of electrical toxicity, but hyperkalemia can progress to ventricular fibrillation without sequential classic ECG changes. In a patient with potassium greater than 6.0 mmol/L and concerning clinical context, use monitoring, repeat biochemical testing when appropriate, and do not delay treatment for confirmation if instability or ECG toxicity is present. Wolters Kluwer+1Wolters KluwerRecent Advances in Nephrology: The Research Gaps... : Nigerian Journal of Clinical PracticeWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency Medicine
Is sodium bicarbonate routine treatment for acute hyperkalemia?
No. Reserve IV bicarbonate for coexisting metabolic acidosis after immediate membrane stabilization and potassium-shift therapy; without acidosis, bicarbonate lowers potassium only slightly. The KDIGO algorithm lists 50 mmol IV over 15 minutes. PubMed+2PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceccjmDiagnosis and treatment of hyperkalemia
References
- Hyperkalemia in adults - Symptoms, diagnosis and treatment | BMJ Best Practice US — bestpractice.bmj.com · bestpractice.bmj.com
- Emergency management of severe hyperkalemia: Guideline for best practice and opportunities for the future — www.sciencedirect.com · www.sciencedirect.com
- An Evidence-Based Narrative Review of the Emergency Department Management of Acute Hyperkalemia - ScienceDirect — www.sciencedirect.com · www.sciencedirect.com
- Hyperkalemia management in the emergency department: An expert panel consensus — www.sciencedirect.com · www.sciencedirect.com
- KDIGO 2021 Clinical Practice Guideline for the Management of Blood Pressure in Chronic Kidney Disease — www.sciencedirect.com · www.sciencedirect.com
- Acute hyperkalemia in the emergency department - Ovid — journals.lww.com · journals.lww.com
- Recent Advances in Nephrology: The Research Gaps... : Nigerian Journal of Clinical Practice — journals.lww.com · journals.lww.com
- Acute hyperkalemia in adults : Turkish Journal of Emergency Medicine — journals.lww.com · journals.lww.com
- EMCREG-International Multidisciplinary Consensus... : Cardiorenal Medicine — journals.lww.com · journals.lww.com
- [PDF] Kidney News - May 2010 - American Society of Nephrology — www.asn-online.org · www.asn-online.org
- Hyperkalemia management in the emergency department - PMC - NIH — pmc.ncbi.nlm.nih.gov · pmc.ncbi.nlm.nih.gov
- Acute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference — pmc.ncbi.nlm.nih.gov · pmc.ncbi.nlm.nih.gov
- Hypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal disease — pmc.ncbi.nlm.nih.gov · pmc.ncbi.nlm.nih.gov
- Hyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMC — pmc.ncbi.nlm.nih.gov · pmc.ncbi.nlm.nih.gov
- Third in a series on hyperkalemia: current views on the treatment of hyperkalemia — www.escardio.org · www.escardio.org
- [PDF] Summary form National Institute for Health and Care Excellence ... — www.nice.org.uk · www.nice.org.uk
- Hyperkalaemia | Treatment summaries - BNF - NICE — bnf.nice.org.uk · bnf.nice.org.uk
- Diagnosis and treatment of hyperkalemia — www.ccjm.org · www.ccjm.org
- [PDF] ACE inhibitors and ARBs: Managing potassium and renal function — www.ccjm.org · www.ccjm.org
- Treatment of hyperkalemia: something old, something new — www.kidney-international.org · www.kidney-international.org
- A phase 2 study on the treatment of hyperkalemia in patients with ... — www.kidney-international.org · www.kidney-international.org
- Clinical Management of Hyperkalemia - ScienceDirect.com — www.sciencedirect.com · www.sciencedirect.com
- Review Treatment of hyperkalemia: something old, something new — www.sciencedirect.com · www.sciencedirect.com
- Sodium bicarbonate administration and subsequent potassium concentration in hyperkalemia treatment — www.sciencedirect.com · www.sciencedirect.com