Low Serum or Plasma Potassium
Treatment with drugs
Loop or thiazide diuretics
Mineralocorticoids such as aldosterone and corticosterone
Antibiotics such as carbenicillin and ticarcillin
GI losses of potassium from vomiting, diarrhea, malabsorption
Aldosteronism may be primary or secondary, as in renal artery stenosis.
Endogenous or exogenous increase in corticosteroids from Cushing syndrome or dietary or parenteral potassium deprivation (IV fluids w/out potassium supplementation)
Alkalosis from extracellular to intracellular shift of potassium
Excess licorice ingestion
Suggested Additional Lab Testing
Serum aldosterone to assess for primary and secondary hyperaldosteronism
24-hour urine free cortisol to assess for Cushing syndrome
Blood gases to evaluate possible alkalosis
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