Wondering if anyone has any evidence bbased information on when to change a central line dressing outside the normal time frames (7 days for Tegaderm, etc.). When there is drainage (dried or bloody) - and the dressing is intact-how much drainage is acceptable? Are we opening patients up for greater risk of infection and skin problems with repeated dressing changes even for a nickel sized area at insertion site of dried blood. Plus - who is to say that we won't get the site oozing again when doing the site cleansing. We are trying to come up with some guidelines for the nurses. Thanks in advance!