What is the normal value (NV) for sodium in the blood.
3.5-5 mEq/L.
9-10.5 mg/dL.
135-145 mEq/L.
96-106 mEq/L.
The Correct Answer is C
According to Healthline1 and Mayo Clinic, the normal blood sodium level is between 135 and 145 milliequivalents per liter (mEq/L).
Choice A is wrong because it is the normal range for potassium, not sodium.
Choice B is wrong because it is the normal range for calcium, not sodium.
Choice D is wrong because it is the normal range for chloride, not sodium
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Hyponatremia is a condition where the serum sodium level is below 135 mEq/L, which can affect the normal functioning of cells, muscles, and organs.
Administering intravenous fluids with a high sodium content can help restore the sodium balance and prevent complications such as confusion, seizures, and coma.
Choice A is wrong because encouraging the patient to consume a low-sodium diet would worsen the hyponatremia and increase the risk of electrolyte imbalance.
Choice C is wrong because administering a diuretic medication to increase urine output would cause further fluid and sodium loss and exacerbate the hyponatremia.
Choice D is wrong because encouraging the patient to increase fluid intake would dilute the sodium concentration and lower the serum sodium level.
Correct Answer is A
Explanation
Sodium is the major extracellular electrolyte in the body.
It is responsible for maintaining the extracellular fluid volume, and also for regulation of the membrane potential of cells.
Sodium is exchanged along with potassium across cell membranes as part of active transport.
Choice B is wrong because potassium is mainly an intracellular ion.
It is important for nerve and muscle function, but it is not the predominant electrolyte in the extracellular fluid.
Choice C is wrong because calcium is not the major electrolyte in the extracellular fluid.
Calcium is mostly found in bones and teeth, where it forms a mineral reserve with phosphate.
Calcium also plays a role in muscle contraction, blood clotting, and enzyme activity.
Choice D is wrong because magnesium is not the major electrolyte in the extracellular fluid.
Magnesium is mostly found in bones, where it helps to stabilize the structure of ATP2.
Magnesium also participates in enzyme reactions, nerve and muscle function, and protein synthesis.
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