The vital signs for a client with heart failure (HF), who is admitted to the intensive care unit (ICU), are a temperature of 98.6° F (37°C), heart rate 125 beats/minute, respirations 22 breaths/minute, and blood pressure 140/50 mm Hg. The nurse determines the client's central venous pressure (CVP) and pulmonary artery wedge pressure (PAWP) are elevated. Which intervention should the nurse implement?