title: Long-term function of vascular access for hemodialysis.
abstract: OBJECTIVE
  To compare the outcome of autogenous arteriovenous fistulas (AVF) with interposition graft fistulas for hemodialysis access.
  
  
  METHODS
  Retrospective clinical study.
  
  
  METHODS
  Department of Surgery, Zurich University Hospital.
  
  
  METHODS
  Primary and secondary patency rates were calculated by life tables. Factors potentially affecting patency were studied by comparison of life tables using the log rank test.
  
  
  RESULTS
  From 1980 to 1992, 414 patients were operated on for long-term vascular access. 720 fistulas were created including 429 AVF and 291 interposition grafts (150 bovine xenografts, 69 PTFE grafts, 59 sheep collagen grafts, 10 autologous and 1 homologous vein grafts). Secondary patency rates after 1 and 3 yr were 74/64% in AVF, 56/24% in bovine xenografts, 58/40% in PTFE grafts and 71/45% in sheep collagen grafts. The latter performed not significantly worse than AVF. Primary and secondary patency rates were significantly lower in women.
authors.affiliation: Department of Surgery, Zurich University Hospital, Switzerland.
authors.forename: M A
authors.initials: MA
authors.lastname: Enzler
authors.forename: T
authors.initials: T
authors.lastname: Rajmon
authors.forename: M
authors.initials: M
authors.lastname: Lachat
authors.forename: F
authors.initials: F
authors.lastname: Largiadèr
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D001166:Arteriovenous Shunt, Surgical; D001672:Biocompatible Materials; D001807:Blood Vessel Prosthesis; D002408:Catheters, Indwelling; D002417:Cattle; D002648:Child; D003094:Collagen; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015993:Life Tables; D008297:Male; D008875:Middle Aged; D011138:Polytetrafluoroethylene; D011474:Prosthesis Design; D006435:Renal Dialysis; D012189:Retrospective Studies; D012737:Sex Factors; D012756:Sheep; D014182:Transplantation, Autologous; D014183:Transplantation, Heterologous; D016896:Treatment Outcome; D014654:Vascular Patency; D014680:Veins / Q000637:transplantation
chemical_list: D001672:Biocompatible Materials; D011138:Polytetrafluoroethylene; D003094:Collagen