Venous<unk>  made of cobalt chromium alloy mesh. In cardiac surgery and vascular surgery,<unk>  (or<unk>  stent) is a type of scaffold made of metal or plastic material that is inserted over the outside of the vein graft in order to decrease the intermediate and late vein graft failure after bypass surgery (e.g. CABG). An<unk> <unk>  stent) should be differentiated from a stent. An<unk>  is placed on the outside of the vessel whereas a stent is inserted into the lumen of a vessel. __TOC__
External support
Source control 
Social support
Mentorship
Respect for persons
Barrier nursing
Social narrative
Personal narrative