title: Initial experience with a new method of external polyester scaffolding for infrainguinal vein grafts.
abstract: OBJECTIVE
  This study aims to evaluate the feasibility of external polyester scaffolding in infrainguinal bypass grafting when available vein material is suboptimal due to varicosity or dilatation. Primary objectives were short-term primary patency, assisted primary patency and secondary patency. Secondary objectives were to assess the rate of graft stenoses, infections and other adverse effects related to the use of external scaffolding.
  
  
  METHODS
  A total of 50 consecutive patients were included in this prospective, multicentre, feasibility study from six centres. The indication for infrainguinal bypass was critical limb ischaemia (64%), severe claudication (34%) or popliteal aneurysm (2%). Indications for the use of the external scaffolding were varicosity of the vein graft, ectatic vein graft or the use of spliced vein grafts with segments of widely differing diameters. Duplex scanning of the graft was done perioperatively and at follow-up visits at 1, 3, 6 and 12 months after operation.
  
  
  RESULTS
  Primary patency, assisted primary patency and secondary patency at 6 months were 82.3% (+/-SE 6.2%), 88.6% (+/-SE 4.8%) and 92.1% (+/-SE 4.4%), respectively. Six graft stenoses were detected in duplex surveillance. There were no infections related to polyester mesh.
  
  
  CONCLUSIONS
  External scaffolding of infrainguinal vein grafts may be a promising innovation. Early results from this multicentre study show that polyester mesh is safe and feasible adjunct to peripheral revascularization enabling the use of otherwise non-optimal vein grafts with acceptable short-term patency.
authors: Department of Vascular Surgery, Helsinki University Central Hospital, Helsinki, Finland. eva.arvela@hus.fi
authors: E
authors: E
authors: Arvela
authors: P
authors: P
authors: Kauhanen
authors: A
authors: A
authors: Albäck
authors: M
authors: M
authors: Lepäntalo
authors: A
authors: A
authors: Neufang
authors: F
authors: F
authors: Adili
authors: T
authors: T
authors: Schmitz-Rixen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000783:Aneurysm / Q000601:surgery; D004867:Equipment Design; D005240:Feasibility Studies; D005260:Female; D006083:Graft Occlusion, Vascular / Q000209:etiology / Q000601:surgery; D006801:Humans; D007383:Intermittent Claudication / Q000209:etiology / Q000601:surgery; D007511:Ischemia / Q000209:etiology / Q000601:surgery; D053208:Kaplan-Meier Estimate; D035002:Lower Extremity / Q000098:blood supply*; D008297:Male; D008875:Middle Aged; D016491:Peripheral Vascular Diseases / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D010690:Phlebography; D010865:Pilot Projects; D011091:Polyesters; D011150:Popliteal Artery / Q000601:surgery; D011446:Prospective Studies; D012086:Reoperation; D013526:Surgical Mesh; D013530:Surgical Wound Infection / Q000209:etiology / Q000601:surgery; D013997:Time Factors; D016896:Treatment Outcome; D018616:Ultrasonography, Doppler, Duplex; D014654:Vascular Patency; D014656:Vascular Surgical Procedures / Q000009:adverse effects / Q000295:instrumentation*; D014680:Veins / Q000473:pathology / Q000637:transplantation*
chemical_list: D011091:Polyesters