It is now hospital admission day 4, and J.M. is receiving hi…

It is nоw hоspitаl аdmissiоn dаy 4, and J.M. is receiving his scheduled vancomycin IV infusion, which began at 0815. The nurse notices that the IV site is red, swollen, and leaking, and the patient reports mild pain at the site. The pump is still running as programmed. Question: Which nursing action should be taken first?