The nurse suspects that the client has a pulmonary embolism. Which is the most important nursing action?  1. Monitor the vital signs 2. Elevate the head of the bed. 3. Increase the intravenous flow...

The nurse suspects that the client has a pulmonary embolism. Which is the most important nursing action?

 1. Monitor the vital signs

2. Elevate the head of the bed.

3. Increase the intravenous flow rate.

4. Administer oxygen by face mask, as prescribed.