a client who has been npo for 3 days is receiving an infusion of dextrose 5% in 0.45% sodium chloride (d51/2 ns) with potassium chloride (kcl) 20 meq at 83 ml/hour. the client's 8-hour urine output is 400 ml, blood urea nitrogen (bun) is 15 mg/dl (5.355 mmol/l), lungs are clear bilaterally, serum glucose is 110 mg/dl ( 6.1 mmol/l), and serum potassium is 3.7 meq/l (3.7 mmol/l). which action should the nurse implement?