Management of Severe Hypokalemia

Target Serum Potassium Levels

The American College of Cardiology recommends a target serum potassium level of 4.0-4.5 mEq/L 1

For patients with autoimmune diseases, such as the one described, who are on medications that cause potassium wasting (e.g., corticosteroids), the European Society of Cardiology suggests considering adding potassium-sparing diuretics if hypokalemia persists despite supplementation 2
The American College of Cardiology recommends that for persistent hypokalemia, potassium-sparing agents such as spironolactone, triamterene, or amiloride may be considered 1

The American College of Cardiology advises caution when administering potassium supplements with concomitant ACE inhibitors or potassium-sparing diuretics as dangerous hyperkalemia may occur 1
The American College of Cardiology recommends avoiding nonsteroidal anti-inflammatory drugs in patients with hypokalemia as they can worsen electrolyte imbalances 1