Back to Basics: Approach to Hyponatremia

Approach to Hyponatremia:

Be aware that clinical signs and symptoms may not develop until Na <130

  • Initial sympoms: headache, nausea and vomiting, disorientation, confusion, agitation, ataxia, arreflexia

Severe symptoms can develop with Na < 120

  • Severe symptoms: intractable vomitng, seizures, coma and ultimately brainstem herniation can occur

Stay tuned for next week's post when we review treatment of hyponatremia including the dreaded Osmotic Demyelination Syndrome!



Petrino, Roberta, and Roberta Marino.. "Fluids and Electrolytes." Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8eEds. Judith E. Tintinalli, et al. New York, NY: McGraw-Hill, 2016, pg 95-97.

Mount, David B.. "Fluid and Electrolyte Disturbances." Harrison's Principles of Internal Medicine, 19eEds. Dennis Kasper, et al. New York, NY: McGraw-Hill, 2014,