Fundamentals of Nursing NCLEX RN Questions Related

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The nurse reviews a client’s laboratory data before a scheduled surgery. Which laboratory data requires immediate follow-up?

  • A. Sodium level
  • B. Potassium level
  • C. Blood Urea Nitrogen (BUN)
  • D. Creatinine
Correct Answer: B

Rationale: Abnormal potassium levels can cause cardiac arrhythmias, a critical risk during surgery, requiring immediate follow-up. Sodium, BUN, and creatinine abnormalities are less immediately life-threatening but still important.