HESI RN CAT Exit Exam Related

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The nurse assesses a client who is receiving an infusion of 5% dextrose in water with 20 mEq of potassium chloride. The client has oliguria and a serum potassium level of 6.5 mEq/L. What action should the nurse implement first?

  • A. Notify the healthcare provider of the laboratory results
  • B. Decrease the rate of the IV infusion
  • C. Stop the infusion
  • D. Administer sodium polystyrene sulfonate (Kayexalate)
Correct Answer: C

Rationale: The correct action for the nurse to implement first is to stop the infusion (Choice C). Oliguria and a high serum potassium level indicate the client is at risk for hyperkalemia, which can be exacerbated by the potassium chloride infusion. Stopping the infusion is crucial to prevent further elevation of potassium levels and potential cardiac complications.

Choice A (Notify the healthcare provider) is not the first action as immediate intervention is needed to prevent harm. Choice B (Decrease the rate of the IV infusion) is not sufficient to address the immediate risk of hyperkalemia. Choice D (Administer sodium polystyrene sulfonate) is not appropriate as the first action and should only be considered after stabilizing the client's condition.