title: Early quantitative coronary angiography of saphenous vein grafts for coronary artery bypass grafting harvested by means of open versus endoscopic saphenectomy: a prospective randomized trial.
abstract: OBJECTIVE
  Endoscopic saphenectomy is associated with a decreased incidence of wound complications without an increase in histologic trauma or endothelial dysfunction in published reports. Concern remains about the patency of saphenous vein grafts harvested endoscopically and the development of early intimal hyperplasia. The purpose of this study was to compare early quantitative coronary analysis of saphenous vein grafts used for coronary artery bypass grafting harvested with the open versus endoscopic techniques.
  
  
  METHODS
  Forty patients undergoing primary coronary artery bypass grafting surgery with at least 1 saphenous vein graft were randomized preoperatively to open versus endoscopic saphenectomy with bipolar cauterization of side branches. Quantitative coronary angiography was performed a mean of 3 months (range, 1-9 months) after the operation.
  
  
  RESULTS
  There was no statistically significant difference in the patency rates of internal thoracic artery grafts between the open and endoscopic groups and no statistically significant difference in the patency rates of saphenous vein grafts between both groups (85.2% vs 84.4%, P =.991). Quantitative coronary angiography showed no difference in graft stenosis (>or=50% of the internal diameter of the graft) in the body of the saphenous vein grafts in the open versus endoscopic saphenectomy groups (3.7% vs 0%, P =.280).
  
  
  CONCLUSIONS
  Angiographic appearance and patency rates of saphenous vein grafts harvested with the endoscopic technique are similar to those of saphenous vein grafts harvested with the open technique. These results support the use of endoscopic saphenectomy because of the known lower incidence of wound and infectious complications and superior functional results.
authors.affiliation: Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada. lpperrau@icm.umontreal.ca
authors.forename: L P
authors.initials: LP
authors.lastname: Perrault
authors.forename: H
authors.initials: H
authors.lastname: Jeanmart
authors.forename: L
authors.initials: L
authors.lastname: Bilodeau
authors.forename: J
authors.initials: J
authors.lastname: Lespérance
authors.forename: J-F
authors.initials: JF
authors.lastname: Tanguay
authors.forename: D
authors.initials: D
authors.lastname: Bouchard
authors.forename: P
authors.initials: P
authors.lastname: Pagé
authors.forename: M
authors.initials: M
authors.lastname: Carrier
mesh_terms: D017023:Coronary Angiography; D001026:Coronary Artery Bypass; D004724:Endoscopy; D005260:Female; D006083:Graft Occlusion, Vascular / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011446:Prospective Studies; D012501:Saphenous Vein / Q000000981:diagnostic imaging / Q000637:transplantation*; D020858:Tissue and Organ Harvesting / Q000379:methods*; D014654:Vascular Patency