title: The value of pre-operative ultrasound mapping of the greater saphenous vein prior to 'closed' in situ bypass operations.
abstract: OBJECTIVE
  The aim of this study was to test pre-operative ultrasound mapping for the detection of duplications and narrow vein segments of the greater saphenous vein (GSV) used as bypass for occlusive arterial disease surgery.
  
  
  METHODS
  In 44 patients pre-operative ultrasound findings of duplications and lumen assessment of GSV were compared to the per-operative findings.
  
  
  RESULTS
  In nine patients (20%) the pre-operative ultrasound examination showed a duplication. Pre-operative ultrasound had missed a duplication in two cases but had instead shown a narrow segment in both. The pre-operative ultrasound assessment of lumen diameter showed a narrow lumen segment in 10 of the 44 patients. In one patient a per-operatively narrow lumen had not been seen on pre-operative ultrasound.
  
  
  CONCLUSIONS
  Pre-operative ultrasound mapping of the GSV is a sensitive tool for detection of duplications and narrow vein segments. Since these anatomical variations provide important information for the vascular surgeon, before performing a 'closed' in situ bypass operation, pre-operative vein mapping should be considered when planning such a procedure.
authors.affiliation: Department of Radiology, University Hospital Rotterdam Dijkzigt, The Netherlands.
authors.forename: L C
authors.initials: LC
authors.lastname: van Dijk
authors.forename: C H
authors.initials: CH
authors.lastname: Wittens
authors.forename: H
authors.initials: H
authors.lastname: Pieterman
authors.forename: H
authors.initials: H
authors.lastname: van Urk
mesh_terms: D000368:Aged; D001157:Arterial Occlusive Diseases / Q000601:surgery*; D001166:Arteriovenous Shunt, Surgical; D005260:Female; D006801:Humans; D007866:Leg / Q000098:blood supply; D008297:Male; D011300:Preoperative Care; D012501:Saphenous Vein / Q000002:abnormalities / Q000000981:diagnostic imaging* / Q000601:surgery; D014463:Ultrasonography