A charge nurse is teaching a newly licensed nurse about fluid shifts. The newly licensed nurse asks why sodium levels are high during dehydration. Which of the following responses should the charge nurse provide?

Water moves from areas where the concentration of sodium is higher to areas where the concentration is lower.

Water moves from areas where the concentration of sodium is lower to areas where the concentration is higher.

Sodium moves from areas where the concentration of solute is lower to areas where the concentration is higher.

Water and sodium particles move together to areas where sodium particles are higher.

Answer and Explanation

The Correct Answer is B

Choice A reason: This statement is incorrect because, during dehydration, water does not move towards areas of lower sodium concentration.

Choice B reason: This is correct because, during dehydration, the body retains sodium, and water follows by osmosis to areas where sodium concentration is higher, which can result in elevated sodium levels.

Choice C reason: Sodium does not typically move across membranes in response to solute concentration gradients; water does.

Choice D reason: Water moves independently of sodium particles, not necessarily together, and it moves towards areas of higher solute concentration.

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Correct Answer is C

Explanation

Choice A reason: pH 7.30 with elevated HCO3- and PaCO2 suggests compensated respiratory acidosis, not typical for chronic kidney disease.

Choice B reason: pH 7.55 with elevated HCO3- and low PaCO2 suggests metabolic alkalosis, which is not typical for chronic kidney disease.

Choice C reason: pH 7.25 with decreased HCO3- and PaCO2 suggests metabolic acidosis, which is expected in chronic kidney disease due to the accumulation of acids.

Choice D reason: pH 7.50 with low HCO3- and PaCO2 suggests compensated metabolic alkalosis, which is not typical for chronic kidney disease.

A. Elevated BUN B. Hypercalcemia C. Metabolic alkalosis D. Hypokalemia

Correct Answer is A

Explanation

Choice A reason: In acute kidney injury (AKI), the blood urea nitrogen (BUN) level is expected to be elevated due to the kidneys' impaired ability to excrete urea, which is a waste product of protein metabolism. Normal BUN levels range from approximately 7 to 20 mg/dL.

Choice B reason: Hypercalcemia is not commonly associated with AKI. Instead, patients with AKI may experience hypocalcemia due to the kidneys' reduced ability to convert vitamin D to its active form, which is necessary for calcium absorption.

Choice C reason: Metabolic alkalosis is not a typical finding in AKI. More commonly, patients with AKI experience metabolic acidosis because the kidneys are unable to excrete acid effectively, leading to an accumulation of acid in the body.

Choice D reason: Hypokalemia is generally not expected in AKI. The condition is more often associated with hyperkalemia, as the impaired kidney function leads to a reduced excretion of potassium, which can accumulate to dangerous levels.

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A charge nurse is teaching a newly licensed nurse about fluid shifts. The newly licensed nurse asks why sodium levels are high during dehydration. Which of the following responses should the charge nurse provide?

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Naxlex Comprehensive Predictor Exams

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