The emergency department nurse is caring for a client in an addisonian crisis. Which intervention should the nurse implement first? 1. Draw serum electrolyte levels. 2. Administer methylprednisolone...

The emergency department nurse is caring for a client in an addisonian crisis. Which intervention should the nurse implement first?

1. Draw serum electrolyte levels.

2. Administer methylprednisolone (Solu-Medrol) IV.

3. Start an 18-gauge catheter with normal saline.

4. Ask the client what medications he or she is taking.