A nurse is administering a unit of packed red blood cells to a client. Twenty minutes after the start of the transfusion the client develops a temperature of 38.9 C, chills, hypotension, and flank pain. Which actions should the nurse take immediately? Select all that apply.

Acute hemolytic transfusion reaction is a medical emergency. Stopping the transfusion is the first action. Disconnect the blood-product tubing entirely so no additional incompatible blood enters the client; new tubing primed with normal saline maintains IV access for fluid resuscitation. Notify the provider and blood bank, and return the unit and tubing for laboratory analysis. Continuing or slowing the transfusion or treating only the fever delays critical care and worsens hemolysis.