What action should a nurse take when preparing a toddler for an IV catheter insertion?

Explaining the procedure using a toy is an effective way to prepare a toddler for an IV catheter insertion because it helps the child understand what will happen in a familiar and non-threatening way. Using play to demonstrate the steps can alleviate anxiety and fear, making the experience less intimidating. This method helps to engage the child's imagination and allows them to express any concerns they may have in a comfortable setting.

Additionally, toddlers often have limited understanding of medical procedures, so using a toy provides a visual and tangible representation of the process, which can make it more relatable and less scary. This approach also fosters trust between the nurse and the child, which is vital for positive interactions in healthcare settings.

In contrast, asking the parents to leave may increase the child's anxiety, as they often find comfort in their caregivers' presence. Performing the procedure in a waiting room lacks the necessary privacy and could cause additional stress not only for the child but also for other patients and families present. Allowing the child to choose the insertion site may not be practical, as the appropriate site for IV placement is determined by the nurse based on medical guidelines and the child's anatomy. Therefore, engaging the toddler with a toy is the most appropriate action to facilitate a smoother preparation for the procedure.