A client in the intensive care unit has been ordered a transfusion of 2 units of packed red blood cells (PRBCs) due to severe anemia following a hematologic disorder. During the administration, the nurse notes that the client's temperature has risen to 101.6°F, and the client reports feeling chills and discomfort. After stopping the transfusion, which medication should the nurse anticipate administering to the client upon collaboration with the healthcare provider?