Aclient is at postoperative day 1 after abdominal surgery. the client is receiving 0.9% normal saline at 75 ml/h, has a nasogastric tube to low wall suction with 200 ml every 8 hours of light yellow fluid, and a wound drain with 50 ml of dark red drainage every 8 hours. the 24-hour urine output total is 2430 ml. what action by the nurse is most appropriate?