The nurse is preparing to administer medications on a pulmonary unit. Which medication should the nurse administer first? 1. Prednisone, a glucocorticoid, for a client diagnosed with chronic...

The nurse is preparing to administer medications on a pulmonary unit. Which medication should the nurse administer first?

1. Prednisone, a glucocorticoid, for a client diagnosed with chronic bronchitis. 2. Oxygen via nasal cannula at 2 L/min for a client diagnosed with pneumonia. 3. Lactic acidophilus (Lactinex) to a client receiving IVPB antibiotics. 4. Cephalexin (Keflex), an antibiotic, to a client being discharged