A client who was admitted 3 days ago for a bowel obstruction has a liter of lactated Ringer's with potassium chloride (KCI) 20 mEq infusing. The client has been receiving selegiline for depression. When the client reports experiencing a severe headache, the nurse obtains a blood pressure of 200/110 mm Hg. Which action(s) should the nurse take? Select all that apply.