Nokea
A school-age child with chronic renal failure is admitted to the hospital with a serum potassium level of 5.2 mEq/L. Which prescribed medication should the nurse plan to administer?
Correct Answer: B
Rationale: A serum potassium level of 5.2 mEq/L indicates hyperkalemia, which can be dangerous for a child with chronic renal failure. Sodium polystyrene sulfonate (Kayexalate) is a medication commonly used to treat hyperkalemia by exchanging sodium ions for potassium ions in the intestine, promoting the elimination of excess potassium through the gastrointestinal tract. This helps lower the serum potassium levels and prevent complications associated with hyperkalemia. Spironolactone (Aldactone) is a potassium-sparing diuretic and should be avoided in a child with hyperkalemia. Lactulose (Cephulac) is a laxative and does not directly address high potassium levels. Calcium carbonate (Calcitab) is a calcium supplement and is not indicated for managing hyperkalemia.