Hi. I am currently orienting as a new grad on a medical unit. Could someone please clarify this as I have been told conflicting information: For a PICC that requires a heparin flush, i.e. would need to be hep locked if not infusing, if it happens to be used for intermittent infusions, e.g. antibiotics say like 2xs per shift a few hours apart, do I need to hep lock it? Isn't the heparin really only required if the PICC sat without infusing for an entire shift? Thanks, I need to get to the bottom of this without overstepping my preceptor.