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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.

Clinical question: How should physicians stabilize, temporize, definitively remove potassium, and monitor adults with acute hyperkalemia?

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 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 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 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

Initial emergency actions are driven by potassium greater than 6.0 mmol/L, ECG findings, and ability to remove potassium. Wolters 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 MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
FindingImmediate actionWhat it changes
Potassium >6.0 mmol/LContinuous cardiac monitoring and 12-lead ECG. Wolters KluwerAcute hyperkalemia in the emergency department - OvidWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicineIdentifies electrical toxicity and need for immediate stabilization. Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency Medicine
ECG changes attributable to hyperkalemiaGive IV calcium immediately, then initiate potassium redistribution and removal. Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceCalcium addresses imminent cardiac conduction risk but does not eliminate potassium. Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency Medicine
Hemolyzed or discordant potassium result without instabilityRepeat biochemical potassium measurement while evaluating pseudohyperkalemia. Wolters KluwerRecent Advances in Nephrology: The Research Gaps... : Nigerian Journal of Clinical PracticeWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicineAvoids treating a spurious result; do not delay treatment when ECG toxicity is present. Wolters KluwerRecent Advances in Nephrology: The Research Gaps... : Nigerian Journal of Clinical PracticeWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency Medicine
Severely impaired kidney function or absent effective excretionArrange hemodialysis early while temporizing measures are administered. asn-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 conferenceDialysis provides definitive, most effective potassium elimination. PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference

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 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 KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference

IV calcium regimens for hyperkalemia-associated ECG toxicity. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
AgentListed IV doseClinical role
Calcium gluconate1 g IV; algorithm lists up to 3 doses of 1 g, each as 10 mL of 10% solution. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceImmediate myocardial membrane stabilization in ECG-toxic hyperkalemia. Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Calcium chloride1 g IV, 10 mL of 10% solution. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceAlternative calcium preparation for immediate myocardial membrane stabilization. PubMedAcute 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. PubMedAcute 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. PubMedHypoglycemia 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. PubMedHyperkalemia 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. PubMedHyperkalemia 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

Temporizing potassium-shift therapies and their key limitations. PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferencePubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal diseasePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMCccjmDiagnosis and treatment of hyperkalemia
TherapySupported regimenSelection and monitoring
Regular insulin plus glucoseRegular insulin 5 units IV plus glucose 25 g IV; guidelines cited elsewhere describe 5-10 units with 25-50 g dextrose. PubMedAcute 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 - PMCUse for rapid redistribution; measure glucose serially because hypoglycemia is common, particularly with reduced kidney function. PubMedHypoglycemia 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
Nebulized albuterol10 mg nebulized. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceCan be combined with insulin for additive effect; recognize occasional nonresponse and beta-agonist adverse effects. PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Sodium bicarbonate50 mmol IV over 15 minutes in the KDIGO algorithm. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceReserve for coexisting metabolic acidosis; it has limited effect without acidosis. PubMedHyperkalemia management in the emergency department - PMC - NIHccjmDiagnosis and treatment of hyperkalemia

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. PubMedHypoglycemia 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

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[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[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 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. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference

Potassium-elimination options after emergency stabilization. asn-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 conferenceccjmDiagnosis and treatment of hyperkalemia
MethodWhen to useKey limitation or instruction
HemodialysisSevere or persistent hyperkalemia with inadequate renal elimination or need for urgent definitive removal. asn-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 conferenceMost effective and preferred urgent elimination modality; arrange while medical temporizing therapy is underway. PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Loop diureticPatient has reasonable kidney function and capacity for urinary potassium excretion. asn-online[PDF] Kidney News - May 2010 - American Society of NephrologyccjmDiagnosis and treatment of hyperkalemiaNot a reliable sole strategy when renal function is severely impaired. asn-online[PDF] Kidney News - May 2010 - American Society of Nephrology
Sodium polystyrene sulfonateAdjunctive gastrointestinal potassium removal; KDIGO algorithm lists 15-60 g orally or rectally. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceDo not administer with sorbitol; gastrointestinal toxicity is a recognized concern. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceccjmDiagnosis and treatment of hyperkalemia
Sodium zirconium cyclosilicateAdjunctive gastrointestinal potassium removal; KDIGO algorithm lists 10 g orally three times daily. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferenceLimited emergency-onset data and no head-to-head binder data in the cited algorithm. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
PatiromerMore relevant to ongoing potassium management than immediate electrical emergencies. ccjmDiagnosis and treatment of hyperkalemiaNot advisable for emergency treatment in the KDIGO algorithm because onset is approximately 7 hours. PubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference

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 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. PubMedHypoglycemia 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 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

Post-treatment monitoring targets for emergency hyperkalemia. Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conferencePubMedHypoglycemia 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
ParameterMonitoring actionAction if abnormal
ECG and rhythmContinue cardiac monitoring after potassium greater than 6.0 mmol/L or ECG toxicity. Wolters KluwerAcute hyperkalemia in the emergency department - OvidWolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicineRecurrent conduction abnormality or dysrhythmia requires repeat immediate stabilization and escalation of potassium removal. Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Serum potassiumRecheck frequently after treatment. Wolters KluwerAcute hyperkalemia in adults : Turkish Journal of Emergency MedicinePersistent or recurrent elevation requires reassessment of ongoing source and definitive removal, including hemodialysis when indicated. PubMedHyperkalemia management in the emergency department - PMC - NIHPubMedAcute hyperkalemia in the emergency department: a summary from a Kidney Disease: Improving Global Outcomes conference
Blood glucoseObtain serial measurements after IV insulin; monitor at least 3 hours in ESRD. PubMedHypoglycemia in the treatment of hyperkalemia with insulin in patients with end-stage renal diseasePubMedHyperkalemia Management with Intravenous Insulin in Patients with Reduced Kidney Function - PMCTreat hypoglycemia promptly and continue surveillance because impaired kidney function increases risk. PubMedHypoglycemia 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

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 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. PubMedHyperkalemia 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

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  9. EMCREG-International Multidisciplinary Consensus... : Cardiorenal Medicinejournals.lww.com · journals.lww.com
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