What is the first step in changing an IV bag?

The first step in changing an IV bag is to clamp the IV tubing before disconnecting the old bag. This action is crucial as it prevents backflow of blood into the IV line, reducing the risk of contamination and air embolism. Clamping the line ensures that the existing fluid does not mix with air or allow blood to enter the tubing, which can lead to complications for the patient.

By securely clamping the line, the healthcare provider can then safely disconnect the old bag without any adverse effects. This is a standard procedure that upholds patient safety and maintains the integrity of the vascular access system. Other steps, such as removing the old bag or connecting the new one, come after ensuring the IV line is properly clamped. Notifying the nurse manager is not a standard step in changing an IV bag and does not contribute to the immediate process of changing the IV fluid.