Hyperkalemia

Abnormally elevated serum potassium concentration (>5.0-5.5 mmol/L), which can disrupt normal neuromuscular and cardiac conduction, predisposing to arrhythmias and potentially life-threatening cardiovascular instability. Possible causes are kidney failure, medications (ACE inhibitor, ARBs, diuretics, NSAIDs), cellular breakdown (rhabdomyolysis, tumor lysis syndrome, burns), diabetes, hypoaldosteronism, acidosis, dietary supplements, high-potassium foods (avocado, banana, potato), or pseudohyperkalemia.