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Exam NCLEX-RN topic 7 question 110 discussion

Actual exam question from Test Prep's NCLEX-RN
Question #: 110
Topic #: 7
[All NCLEX-RN Questions]

Stat serum electrolytes ordered for a client in acute renal failure revealed a serum potassium level of 6.4. The physician is immediately notified and orders 50 mL of dextrose and 10 U of regular insulin IV push. The nurse administering these drugs knows the Rationale for this therapy is to:

  • A. Remove the potassium from the body by renin exchange
  • B. Protect the myocardium from the effects of hypokalemia
  • C. Promote rapid protein catabolism
  • D. Drive potassium from the serum back into the cells D
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Suggested Answer: Explanation 🗳️
(A) Sodium polystyrene sulfonate (Kayexalate), a cation exchange resin, exchanges sodium ions for potassium ions in the large intestine reducing the serum potassium. (B) Calcium is administered to protect the myocardium from the adverse effects of hyperkalemia. Serum levels reflect hyperkalemia. (C) Rapid catabolism releases potassium from the body tissue into the bloodstream. Infection and hyperthermia increase the process of catabolism. (D) The administration of dextrose and regular insulin IV forces potassium back into the cells decreasing the potassium in the serum.
by d7c293b at Oct. 2, 2024, 2:34 a.m.

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d7c293b
2 months, 3 weeks ago
Answer is D. Its a temporary solution but quick.
upvoted 1 times
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