Upon noticing an IV infiltration, which is the most appropriate first action for the nurse?

The appropriate first action upon noticing an IV infiltration is to remove the IV line. This step is crucial because leaving the IV in place can cause further damage to the surrounding tissue, increase discomfort, and potentially lead to more serious complications such as infection or tissue necrosis. By removing the line, the nurse prevents any additional fluid from entering the tissue that is already compromised.

After the line is removed, it is important to take other actions, such as notifying the healthcare provider and assessing the site for further intervention. Elevating the affected limb and applying a warm compress may also be beneficial after the line is taken out, as these actions can help alleviate swelling and discomfort. However, the immediate priority is to address the source of infiltration by safely removing the IV line.