HESI RN CAT Exam Quizlet Related

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A client in acute renal failure has a serum potassium of 7.5 mEq/L. Based on this finding, the nurse should anticipate implementing which action?

  • A. Administer an IV of normal saline rapidly and NPH insulin subcutaneously.
  • B. Administer a retention enema of Kayexalate.
  • C. Add 40 mEq of KCL (potassium chloride) to the present IV solution.
  • D. Administer a lidocaine bolus IV push.
Correct Answer: B

Rationale: In acute renal failure with a high serum potassium level, the priority intervention is to lower potassium levels to prevent complications like cardiac arrhythmias. Administering a retention enema of Kayexalate is the correct action as it helps lower high potassium levels by exchanging sodium for potassium in the intestines. Options A, C, and D are incorrect. Administering normal saline rapidly and NPH insulin or adding more potassium to the IV solution can further increase potassium levels, worsening the condition. Lidocaine is not indicated for treating hyperkalemia.