What is the most important action for the nurse to take when a patient is first started on an IV antibacterial drug? Group of answer choices Comparing the actual drip rate every hour with the prescribed rate to ensure that the infusion is on time Checking the IV site every 4 hours for redness around the site and the presence of cordlike veins Assessing the patient’s total white blood cell count daily to determine drug effectiveness Assessing the patient’s pulse, blood pressure, and respiratory effort every 15 minutes