Summary
Highlights
The mnemonic 'SALT LOSS' is used to recall signs and symptoms. 'S' for seizures and stupor. 'A' for abdominal cramping and attitude changes (confusion). 'L' for lethargy. 'T' for tendon reflexes diminished and trouble concentrating. 'L' for loss of urine and appetite. 'O' for orthostatic hypotension and overactive bowel sounds. 'S' for shallow respirations (a late sign). 'S' for spasms of the muscles.
The video introduces hyponatremia, defining it as low sodium in the blood. A normal sodium level is 135-145 mEq/L, and anything below 135 mEq/L is considered hyponatremia. Sodium's role in the body, particularly its interaction with water, is explained: water follows sodium. In hyponatremia, low extracellular sodium causes water to rush into cells, leading to swelling, which is particularly sensitive in brain cells, causing confusion.
The video details three types of hyponatremia: euvolemic, hypovolemic, and hypervolemic. Euvolemic hyponatremia involves increased body water while sodium stays the same, leading to diluted sodium (e.g., SIADH). Hypovolemic hyponatremia is characterized by a decrease in both sodium and water due to dehydration (e.g., vomiting, diarrhea, excessive sweating). Hypervolemic hyponatremia involves an increase in both water and sodium, but sodium becomes diluted due to fluid overload (e.g., CHF, kidney failure).
A mnemonic, 'NO SODIUM', is provided to remember the causes. 'N' stands for Na (sodium) excretion increasing due to renal problems, GI issues, diuretics, burns, or diabetes insipidus. 'O' represents overload of fluids (hypervolemic causes like CHF, hypotonic solutions, liver failure). 'S' signifies low sodium intake. 'A' refers to Antidiuretic Hormone over-secretion (SIADH) and adrenal insufficiency.
Key nursing interventions include monitoring cardiac, respiratory, neuro, renal, and GI status. For hypovolemic hyponatremia, IV sodium solutions like 3% saline (a hypertonic solution) are administered slowly to prevent fluid overload. For hypervolemic hyponatremia, fluid restriction and sometimes diuretics are used. For SIADH, fluid restriction and anti-diuretic hormone antagonists like Declomycin are given. Nurses should also check lithium levels, as low sodium can affect its excretion, and instruct patients to consume sodium-rich foods like canned goods, cheeses, and processed meats.