How to prevent infection when performing central venous access device (CVAD) dressing changes? Connected Care Central Vascular Access Device (CVAD): Changing The Dressing Health Library NewYork Presbyterian Text Discharge Instructions: Changing the Dressing on Your Midline Catheter Central Line Dressing Change, , Central lines are at a high risk of serious infection. Proper central line care is a key to preventing these central line associated bloodstream infections called Peripherally Inserted Central Catheter (PICC Line)