The nurse is caring for a client who has been diagnosed with deep vein thrombosis. When assessing the client's vital signs, the nurse notes an apical pulse of 150 bpm, a respiratory rate of 46...

The nurse is caring for a client who has been diagnosed with deep vein thrombosis. When assessing the client's vital signs, the nurse notes an apical pulse of 150 bpm, a respiratory rate of 46 breaths/min, and blood pressure of 100/60 mm Hg. The client appears anxious and restless. What should be the nurse's first course of action?

1. Notify the physician.

2. Administer a sedative.

3. Try to elicit a positive Homans' sign.

4. Increase the flow rate of intravenous fluids.