title: Human umbilical vein versus heparin-bonded polyester for femoro-popliteal bypass: 5-year results of a prospective randomized multicentre trial.
abstract: OBJECTIVE
  To compare long-term patency of Heparin-Bonded Dacron (HBD) and Human Umbilical Vein (HUV) vascular prostheses in above-knee femoro-popliteal bypass surgery.
  
  
  METHODS
  A prospective randomized multi-centre clinical trial.
  
  
  METHODS
  Femoro-popliteal bypasses were performed in 129 patients between 1996 and 2001. After randomization 70 patients received an HUV and 59 an HBD prosthesis. Patients were followed up every three months during the first postoperative year and yearly thereafter. The median follow-up was 60 months (range 3-96 months). Graft occlusions were detected by duplex scanning, angiography or surgical exploration.
  
  
  RESULTS
  The cumulative primary patency rates were 79%, 66% and 58% at 1, 3 and 5 years postoperatively. Primary patency rates for HUV were 74%, 64% and 58% at 1, 3 and 5 years and 84%, 68% and 58% for HBD, respectively (log-rank test, p=0.745). Overall secondary patency rates were 82%, 72% and 61% at 1, 3 and 5 years postoperatively. The overall cumulative limb salvage at 5 years follow-up was 89% (CI 80%-91%) and was not dependent on graft type. Smoking (p=0.019), number of patent crural arteries (p=0.030) and previous cerebro-vascular events (p=0.030) were significant predictors of graft occlusion.
  
  
  CONCLUSIONS
  There was no difference in long-term graft performance between HUV and HBD for above knee infrainguinal bypass.
authors.affiliation: Department of Vascular Surgery, Radboud University Medical Center Nijmegen, Nijmegen, The Netherlands.
authors.forename: D M
authors.initials: DM
authors.lastname: Scharn
authors.forename: M
authors.initials: M
authors.lastname: Dirven
authors.forename: W B
authors.initials: WB
authors.lastname: Barendregt
authors.forename: A P M
authors.initials: AP
authors.lastname: Boll
authors.forename: D
authors.initials: D
authors.lastname: Roelofs
authors.forename: J A
authors.initials: JA
authors.lastname: van der Vliet
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation*; D005260:Female; D005263:Femoral Artery / Q000503:physiopathology / Q000601:surgery*; D006083:Graft Occlusion, Vascular / Q000209:etiology / Q000503:physiopathology; D006493:Heparin; D006801:Humans; D053208:Kaplan-Meier Estimate; D023821:Limb Salvage; D008297:Male; D008875:Middle Aged; D009426:Netherlands; D016491:Peripheral Vascular Diseases / Q000401:mortality / Q000503:physiopathology / Q000601:surgery*; D011093:Polyethylene Terephthalates; D011150:Popliteal Artery / Q000503:physiopathology / Q000601:surgery*; D016016:Proportional Hazards Models; D011446:Prospective Studies; D011474:Prosthesis Design; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome; D014471:Umbilical Veins / Q000637:transplantation*; D014654:Vascular Patency
chemical_list: D011093:Polyethylene Terephthalates; D006493:Heparin