A patient has developed acute renal failure (ARF) with a 24-hour urine output of 350 ml. The nurse should assess the patient for:


• Serum potassium rises as urine output decreases. This puts the patient at risk for cardiac arrhythmias

• Pruritus can occur from hyperphosphatemia, but this is less severe than cardiac arrhythmias

• Tetany occurs due to hypocalcemia or hyperphosphatemia

• Polyphagia does not occur with ARF

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