The nurse is caring for clients on an oncology unit. Which medication should the nurse administer first?  1. The scheduled dose of leucovorin (folinic acid), a rescue factor. 2. The narcotic pain...

The nurse is caring for clients on an oncology unit. Which medication should the nurse administer first?

 1. The scheduled dose of leucovorin (folinic acid), a rescue factor. 2. The narcotic pain medication for a client with pain of 10 on the pain scale. 3. The antiemetic to a client complaining of nausea and an emesis of 200 mL. 4. The third dose of an aminoglycoside antibiotic to a client who has a fever