Hi there everyone! Sorry if I'm asking a retarded question - haven't had any experience dealing with central lines before... My pt has a left central line triple lumen... Our hospital policy is Flush with 5cc NS and follow with 3cc heparin lock flush.. I've just been reading up and text says to aspirate before flushing... Is that common practice? And how often do you change dressings? Our hospital is 48-72 hours prn.. Do you use transparent or gauze? Thank you!