A nurse is reviewing a client's admission laboratory findings that indicate the client has hyponatremia. Which of the following laboratory findings should the nurse also expect to be below the expected reference range?

Chloride

Calcium

Potassium

Magnesium

Answer and Explanation

The Correct Answer is A

Rationale:
A. Chloride levels often decrease along with sodium, as they are closely related electrolytes. Hyponatremia is commonly accompanied by hypochloremia.
B. Calcium levels are regulated independently of sodium and are not typically affected by hyponatremia.
C. Potassium may be normal, low, or even high depending on the underlying cause; it is not consistently low with hyponatremia.
D. Magnesium levels do not typically mirror sodium levels and are regulated separately.

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Correct Answer is D

Explanation

Rationale:
A. While sodium bicarbonate can help mitigate some cardiac effects of hyperkalemia, this is not its primary indication.
B. Sodium bicarbonate may be used as an adjunct in hyperkalemia but not as a direct treatment.
C. Sodium bicarbonate does not treat hyponatremia.
D. Sodium bicarbonate is primarily used to neutralize excess acid in the blood and manage metabolic acidosis by increasing blood pH.

A. respiratory alkalosis B. metabolic alkalosis C. respiratory acidosis. D. metabolic acidosis

Correct Answer is A

Explanation

Rationale:

A. pH: 7.49 is elevated (normal range: 7.35–7.45), indicating alkalosis. PaCO₂: 30 mmHg is low (normal range: 35–45 mmHg), reflecting respiratory alkalosis. HCO₃⁻: 23 mEq/L is normal (normal range: 22–26 mEq/L) → Not a metabolic cause. PaO₂: 96 mmHg and SaO₂: 98% indicates normal oxygenation. Since the pH is high (alkalotic), and the PaCO₂ is low (respiratory alkalosis cause), and HCO₃⁻ is normal, the imbalance is uncompensated respiratory alkalosis

B. Metabolic alkalosis would show high pH and high HCO₃⁻

C. Respiratory acidosis would show low pH and high PaCO₂

D. Metabolic acidosis would show low pH and low HCO₃⁻

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A nurse is reviewing a client's admission laboratory findings that indicate the client has hyponatremia. Which of the following laboratory findings should the nurse also expect to be below the expected reference range?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

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Correct Answer is A

Explanation

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