Hyponatremia - Differential Diagnosis Algorithm

ADH Independent:

 • Tea and Toast Syndrome, Beer Potomania - Low solute diet. Responds briskly to IV fluids. Treat with a high solute/protein diet.

 • Psychogenic Polydipsia - Responds to fluid restriction.

 • Renal Failure - Restrict fluid and dialyze.

ADH Dependent:

 • Hypovolemic - GI losses, renal losses, or other losses. 

 • Euvolemic - Hypothyroidism, adrenal insufficiency, SIADH.

 • Hypervolemic - Heart failure, liver failure, nephrotic syndrome.



- The Curbsiders @thecurbsiders



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