Sodium (Na+) Lab Values

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What is the Lab Name for Sodium (Na+) Lab Values?


What is the Lab Abbreviation for Sodium?


What is Sodium in terms of Nursing Labs?

Sodium (Na+) is the most abundant cation in extracellular fluid. Sodium aids in osmotic pressure, renal retention and excretion of water, acid-base balance, regulation of other cations and anions in the body, plays a role in blood pressure regulation, and stimulation of neuromuscular reactions. Sodium and water have a direct relationship; Water follows salt.

What is the Normal Range for Sodium?

135-145 mEq/L

What are the Indications for Sodium?

  • Monitor:
    • Extracellular osmolality
    • Electrolyte balance

What would cause Increased Levels of Sodium?

  • Cushing Syndrome
  • Hyperaldosteronism
  • Dehydration
  • Burn injury
  • Azotemia (elevated nitrogen)
  • Lactic acidosis (LA)
  • Fever/excessive sweating
  • Excessive IV fluids containing sodium
  • Diabetes Insipidus
  • Osmotic diuresis

What would cause Decreased Levels of Sodium?

  • Congestive Heart Failure (CHF)
  • Syndrome of Inappropriate Antidiuretic Hormone (SIADH)
  • Cystic Fibrosis
  • Diuretic use
  • Metabolic acidosis
  • Addison Disease
  • Nephrotic Syndrome
  • Vomiting
  • Diarrhea
  • Ascites
  • Excessive Antidiuretic Hormone(ADH)
  • Liver failure

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