Final answer:
Healthcare personnel should avoid starting an IV in areas with rashes, infections, or above previous IV sites, but they may use healthy veins in the forearm or back of the hand while adhering to safety protocols.
Step-by-step explanation:
The health care personnel starting an IV line should avoid starting an IV in the area above the site of a previous IV infusion, veins on the back of an arm with a rash, and areas of infection or compromised skin integrity. Suitable veins for IV insertion include long veins in the forearm or the veins on the back of the hand, given that the area is clear, veins are accessible, and there is no contraindication like infection or inflammation. It is crucial to follow best practices and protocols, such as using a checklist, to prevent complications such as catheter-related bloodstream infections.