The nurse is administering sodium polystyrene sulfonate to a client in acute kidney injury (AKI). Which laboratory finding indicates that the medication has been effective?Reference Range:• Glucose: 74 to 106 mg/dL (4.1 to 5.9 mmol/L)• Hemoglobin: 14 to 18 g/dL (140 to 180 g/L)• Potassium: 3.5 to 5 mEq/L (3.5 to 5 mmol/L)• Ammonia: 10 to 80 µg/dL (6 to 47 µmol/dL)

Choice A Reason:Sodium polystyrene sulfonate is used to treat hyperkalemia (high potassium levels) by exchanging sodium ions for potassium ions in the intestines, which are then excreted in the stool. A serum potassium level of 3.8 mEq/L is within the normal range (3.5 to 5 mEq/L), indicating that the medication has effectively reduced the potassium level to a safe range. Monitoring potassium levels is crucial in clients with AKI to prevent complications such as cardiac arrhythmias.Choice B Reason:A hemoglobin level of 13.3 g/dL is slightly below the normal range for adults (14 to 18 g/dL for males and 12 to 16 g/dL for females). While it is important to monitor hemoglobin levels, this value does not directly indicate the effectiveness of sodium polystyrene sulfonate, which is specifically used to manage potassium levels.Choice C Reason:A serum ammonia level of 30 µg/dL is within the normal range (10 to 80 µg/dL). However, this value does not reflect the effectiveness of sodium polystyrene sulfonate, as the medication is not used to manage ammonia levels. Ammonia levels are more relevant in conditions affecting liver function, such as hepatic encephalopathy.Choice D Reason:A serum glucose level of 100 mg/dL is within the normal range (74 to 106 mg/dL). While it is important to monitor glucose levels, this value does not indicate the effectiveness of sodium polystyrene sulfonate. The medication’s primary function is to reduce potassium levels, not to manage glucose levels.