I agree with you poppy. I work at a larger hosp. in Memphis, TN and our policy doesn't state that piggybacks have to be ran with fluids. I always thought that a piggyback could be ran with fluids if fluids were already hanging, but that it wasn't necessary esp. because so many patients have fluid issues. Plus any decent nurse would have a concept of time and wouldn't allow the pump just to beep after an IVPB was finished. That's why you flush lines before and after to prevent clotting off. I wonder if it's your hosp. policy or just your preceptor's opinion. I would check into it.