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NCLEX RN· RN Fluid and Electrolytes · Fluid and Electrolytes NCLEX RN Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

The nurse is caring for a client with chronic obstructive pulmonary disease (COPD) who is currently receiving mechanical ventilation. After reviewing the client's arterial blood gas (ABG), the nurse identifies this ABG as Laboratory: pH 7.24 [7.35-7.45], PaCO2 48 mm Hg [35-45 mm Hg], HCO3 23 mEq/L [22-28 mEq/L], PaO2 90 mm Hg [80-100 mm Hg]

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

Expert Explanatory Rationale

Correct Answer: respiratory acidosis

Question 2 of 5

The nurse is working in the emergency department caring for a client with diabetic ketoacidosis (DKA). Which of the following arterial blood gas (ABG) results would be expected?

A. pH = 7.50 [7.35-7.45]; PaO2 = 90 mm Hg [80-100 mm Hg]; PaCO2 = 37 mm Hg [35-45 mm Hg]; HCO3- = 31 mEq/L [22-28 mEq/L]
B. pH = 7.31 [7.35-7.45]; PaO2 = 90 mm Hg [80-100 mm Hg]; PaCO2 = 56 mm Hg [35-45 mm Hg]; HCO3- = 23 mEq/L [22-28 mEq/L]
C. pH = 7.51 [7.35-7.45]; PaO2 = 94 mm Hg [80-100 mm Hg]; PaCO2 = 31 mm Hg [35-45 mm Hg]; HCO3- = 24 mEq/L [22-28 mEq/L]
D. pH = 7.31 [7.35-7.45]; PaO2 = 90 mm Hg [80-100 mm Hg]; PaCO2 = 37 mm Hg [35-45 mm Hg]; HCO3- = 15 mEq/L [22-28 mEq/L]

Expert Explanatory Rationale

Correct Answer: pH = 7.31 [7.35-7.45]; PaO2 = 90 mm Hg [80-100 mm Hg]; PaCO2 = 37 mm Hg [35-45 mm Hg]; HCO3- = 15 mEq/L [22-28 mEq/L]

Question 3 of 5

The nurse interprets this ABG result as Laboratory: pH 7.62 [7.35-7.45], PaCO2 19 mmHg [35-45 mm Hg], HCO3- 24 mEq/L [22-28 mEq/L], PaO2 85 mmHg [80-100 mm Hg]

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

Expert Explanatory Rationale

Correct Answer: uncompensated respiratory alkalosis

Question 4 of 5

The nurse reviews a client's arterial blood gas results. Based on the results, the nurse plans to obtain a physician's order to Laboratory: pH 7.33 [7.35-7.45], PaCO2 39 mm Hg [35-45 mm Hg], HCO3 24 mEq/L [22-28 mEq/L], PaO2 72 mm Hg [80-100 mm Hg]

A. administer supplemental oxygen
B. administer a benzodiazepine
C. administer sodium bicarbonate intravenously
D. reassess the ABG in two hours

Expert Explanatory Rationale

Correct Answer: administer supplemental oxygen

Question 5 of 5

Which of the following abnormalities in the arterial blood gas (ABG) would be consistent with a client who has overdosed on clonazepam?

A. metabolic acidosis
B. metabolic alkalosis, fully compensated
C. respiratory alkalosis
D. respiratory acidosis

Expert Explanatory Rationale

Correct Answer: respiratory acidosis

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