Hyperkalemia Management

Introduction to Hyperkalemia

The European Society of Cardiology recommends that hyperkalemia with EKG changes be treated as a life-threatening emergency, requiring immediate intervention with IV calcium gluconate and insulin-glucose therapy, as excess potassium can lead to cardiac arrest 1.

Decreased renal potassium excretion is the dominant cause of hyperkalemia, occurring in up to 73% of patients with advanced chronic kidney disease, and is often associated with medications such as RAAS inhibitors, potassium-sparing diuretics, and NSAIDs 1, 5.

Patients with advanced CKD, heart failure, diabetes mellitus, and advanced age have a dramatically elevated risk of hyperkalemia, with renal failure, drugs, and hyperglycemia contributing to most hyperkalemia episodes in hospitalized patients 5.

Pseudohyperkalemia, caused by hemolysis during blood draw, prolonged tourniquet application, fist clenching, or thrombocytosis/leukocytosis, can lead to falsely elevated potassium levels and should be ruled out by repeating the measurement with proper technique or obtaining an arterial sample 1, 5.

The American Heart Association recommends urgent treatment of hyperkalemia with EKG abnormalities using IV calcium gluconate to stabilize cardiac membranes, followed by insulin-glucose therapy and consideration of hemodialysis for severe cases (>6.5 mEq/L) 6.
The European Society of Cardiology suggests stopping or reducing potassium-wasting medications, evaluating renal function, and checking for metabolic acidosis, tissue breakdown, or insulin deficiency to address the underlying cause of hyperkalemia 1, 6.

If SIBO is present, the American Gastroenterological Association recommends confirming the diagnosis through hydrogen/methane breath testing or small bowel aspiration during endoscopy, and screening for fat-soluble vitamin deficiencies with serum retinol, 25-hydroxyvitamin D, alpha-tocopherol, vitamin K1, and PIVKA-II levels 4.
The National Institutes of Health suggests supplementing with water-miscible forms of vitamins A, D, E, K, and B12 to treat deficiencies associated with SIBO 4.