Sodium (Na+) Lab Values
Sep 25, 2023•4 min
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Episode description
Normal 135-145 mEq/L
Indications
- Monitor:
- Extracellular osmolality
- Electrolyte imbalance
Description 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. Sodium plays a role in blood pressure regulation and stimulation of neuromuscular reactions. Sodium and water have a direct relationship; water follows salt.
What would cause increased levels?
- 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?
- Congestive Heart Failure (CHF)
- Syndrome of Inappropriate
- Antidiuretic Hormone (SIADH)
- Cystic Fibrosis
- Diuretic use
- Metabolic acidosis
- Addison's Disease
- Nephrotic Syndrome
- Vomiting
- Diarrhea
- Ascites
- Excessive Antidiuretic
- Hormone(ADH)
- Liver failure
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