Hyperkalaemia cases show room to standardise frontline care: this state-of-the-art review found wide variability in diagnosis and treatment despite the condition’s well-known link to malignant arrhythmias and sudden cardiac arrest. The review highlights that patients with chronic kidney disease, heart failure, diabetes mellitus, and RAAS-inhibiting drugs are especially high risk — making rapid recognition and action by NPs and PAs critical.

Why It Matters To Your Practice

• Hyperkalaemia is common across ED, inpatient, urgent care, and chronic disease settings — exactly where NPs and PAs often make the first high-stakes call.

• The biggest drivers are impaired renal potassium excretion and potassium shifts from acidosis, insulin deficiency, tissue breakdown, or hypertonic states.

• High-risk patients include those with chronic kidney disease, heart failure, diabetes mellitus, and anyone taking ACE inhibitors, ARBs, MRAs, or other drugs that reduce renal potassium excretion.

• Your early ECG, med review, repeat lab check, and escalation decision can be the difference between a reversible abnormality and a cardiac arrest.

Clinical Benefits

• Fast identification of severe hyperkalaemia allows timely membrane stabilisation, intracellular potassium shifting, and potassium removal.

• Using a consistent approach helps distinguish true hyperkalaemia from pseudohyperkalaemia and reduces delays in treatment.

• Frontline clinicians who know the triggers can catch reversible causes early, including missed insulin, worsening renal function, acidosis, and medication effects.

• Newer potassium binders may expand options in selected patients, especially when balancing potassium control with the benefits of guideline-directed cardiometabolic therapy.

Managing Risks

• Treat acute hyperkalaemia as a time-sensitive emergency when potassium is markedly elevated, ECG changes are present, or the patient has symptoms or major comorbidity.

• Confirm the value if the clinical picture does not fit, but do not wait to act when the potassium level and presentation suggest imminent danger.

• Review for common contributors: CKD progression, dehydration, RAAS inhibitors, potassium supplements, NSAIDs, metabolic acidosis, insulin deficiency, and tissue injury.

• Patients need monitoring for recurrence, because correcting the number once does not fix the underlying driver.

The Bottom Line

• Acute hyperkalaemia is one of those moments when NPs and PAs are not “supporting the team” — you are the team’s first line of defence.

• A sharp bedside assessment, rapid ECG and lab interpretation, and decisive escalation can prevent malignant arrhythmias and sudden cardiac arrest.

• In high-risk patients, do not normalize an elevated potassium: recognize it, risk-stratify it, and move fast.