Pediatric Fluid and Electrolyte Imbalances · NCLEX Exam

Why is potassium replacement critical even before insulin therapy in a child with diabetic ketoacidosis (DKA)?

  1. Cerebral edema and seizures
  2. Rapid dehydration and weight loss
  3. Sudden hypernatremia and thirst
  4. Acute renal failure as the only risk
Show answer and explanation

Correct answer: Cerebral edema and seizures

In DKA, even if serum K+ appears low, insulin therapy will drive potassium into cells, worsening hypokalemia unless replaced appropriately.

Difficulty: Medium Question 21 of 23

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