Just wondering . . . recently I took a venipuncture course where the RN advised that a gauze "square" was the better choice than applying a cotton "ball" to the site following venipuncture. Her rationale - the loose cotton ball fibers could "inbed" the puncture site causing problems. It made sense to me! In my practice location the nurses are using the cotton balls and when I mentioned it to them they didn't agree. What is the "norm" in other places?