When giving a med through a port on a central cath, be sure you take everything with you when you're done. My nurse preceptor handed me all the syringes I needed to give my pt the med, therefore, she put together the "needles" on the syringes. It turns out, she didn't screw on the needles tight enough, and after I gave the meds and came back to check on my pt, I found the needle was still in one of the ports and the pt was bleeding!!! I was horrified. Now, when I attach the needles (which are actually needleless) to the syringes, I make sure they're on TIGHT and I don't leave anything behind when I'm leaving!