title: Aneurysm formation in modified human umbilical vein grafts.
abstract: OBJECTIVE
  Aneurysm formation in Human Umbilical Vein Grafts has been reported to be as high as 65% after 5 years. One of the causes might be the structure of the Biograft-wall and in 1985 a new method of processing the graft was begun. In Groningen this new improved Biograft has been used since late 1986.
  
  
  METHODS
  Duplex scanning was used to examine the frequency of aneurysm formation in the new improved Biograft.
  
  
  METHODS
  Sixty-nine patent Biografts have been examined in a period up to 6 years after implantation.
  
  
  RESULTS
  Aneurysms were found in only 17% of grafts although the frequency increased with time. Dilatation was common but may be due to a more elastic graft.
  
  
  CONCLUSIONS
  These findings justify the continued use of the new Biograft as a substitute for arterial femoropopliteal reconstructions.
authors.affiliation: Department of Surgery, University Hospital Groningen, The Netherlands.
authors.forename: R
authors.initials: R
authors.lastname: Strobel
authors.forename: A H
authors.initials: AH
authors.lastname: Boontje
authors.forename: J J
authors.initials: JJ
authors.lastname: Van Den Dungen
mesh_terms: D000368:Aged; D000783:Aneurysm / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000209:etiology*; D001807:Blood Vessel Prosthesis; D004108:Dilatation, Pathologic / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D013997:Time Factors; D018616:Ultrasonography, Doppler, Duplex; D014471:Umbilical Veins / Q000637:transplantation*