PTFE Bypass to Below-knee Arteries: Distal Vein Collar or Not? A Prospective Randomised Multicentre Study
2010 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 39, no 6, 747-754 p.Article in journal (Refereed) Published
Background: Patency and limb salvage after synthetic bypass to the arteries below-knee are inferior to that which can be achieved with autologous vein. Use of a vein collar at the distal anastomosis has been suggested to improve patency and limb salvage, a problem that is analysed in this randomised clinical study. Methods: Patients with critical limb ischaennia undergoing polytetrafluoroethylene (PTFE) bypass to below-knee arteries were randomly either assigned a vein collar or not in two groups bypass to the popliteal artery below-knee (femoro-popliteal below-knee (FemPopBK)) and more distal bypass (femoro-distal bypass (FemDist)). Follow-up was scheduled until amputation, death or at most 5 years, whichever event occurred first. Results: In the FemPopBK and in the FemDist groups, 115/202 and 72/150 were randomised to have a vein collar, respectively. Information was available for 345 of 352 randomised patients (98%). At 3 years, primary patency was 26% (95% confidence interval (CI) 18-38) with a vein collar and 43 (33-58) without a vein collar for femoro-popliteal bypass and 20 (11-38), and 17 (9-33) for femoro-distal bypass, respectively. The corresponding figures for limb salvage were 64 (54-75) and 61(50-74) for femoro-popliteal bypass, and 59 (46-76) and 44 (32-61) for femoro-distal bypass with and without a vein collar, respectively. Log-rank-test for the whole Kaplan-Meier life table curve showed no statistically significant differences with or without vein collar primary patency: p = 0.0853, p = 0.228; secondary patency: p = 0.317, p = 0.280; limb salvage: p = 0.757, p = 0.187 for FemPopBK and FemDist, respectively. The use of a vein collar did not influence patency or limb salvage. Conclusion: This study failed to show any benefit for vein collar with PTFE bypass to a below-knee artery.
Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam , 2010. Vol. 39, no 6, 747-754 p.
PTFE bypass; Femoro-popliteal; Femoro-crural; Popliteal arteries; Tibial arteries; Vein collar; Critical limb ischaemia
National CategoryMedical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-58235DOI: 10.1016/j.ejvs.2010.01.016ISI: 000279522700017OAI: oai:DiVA.org:liu-58235DiVA: diva2:338037