A nurse is providing care to a patient experiencing a multisystem disease process. Because it is the main extracurricular cation, and is the primary electrolyte involved in determining body fluid volumes, the nurse monitors the laboratory values of which of the following electrolytes?
Calcium
Sodium
Potassium
Bicarbonate
The Correct Answer is B
A. Calcium: Important for neuromuscular function but not fluid balance.
B. Sodium: Sodium is the main extracellular cation and is vital in controlling extracellular fluid volume.
C. Potassium: Potassium is the main intracellular cation.
D. Bicarbonate: It's an important buffer but not the main determinant of fluid volume.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. outside the cells: This describes extracellular fluid.
B. in interstitial spaces: Interstitial fluid is extracellular, found between cells.
C. inside the cells: Intracellular fluid is located within the cells and makes up the largest portion of total body water.
D. surrounding the cells: This also describes extracellular fluid.
Correct Answer is B
Explanation
A. Calcium: Important for neuromuscular function but not fluid balance.
B. Sodium: Sodium is the main extracellular cation and is vital in controlling extracellular fluid volume.
C. Potassium: Potassium is the main intracellular cation.
D. Bicarbonate: It's an important buffer but not the main determinant of fluid volume.
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