A nurse on the general medical-surgical unit is caring for a client in shock and assesses the following: Respiratory rate: 10 breaths/min Pulse: 136 beats/min Blood pressure: 92/78 mm Hg Level of consciousness: responds to voice Temperature: 101.5° F (38.5° C) Urine output for the last 2 hours: 40 mL/hr. What action by the nurse is best?