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  • Title: Redo bypass surgery to the infrapopliteal arteries for critical leg ischaemia.
    Author: Biancari F, Railo M, Lundin J, Albäck A, Kantonen I, Lehtola A, Lepäntalo M.
    Journal: Eur J Vasc Endovasc Surg; 2001 Feb; 21(2):137-42. PubMed ID: 11237786.
    Abstract:
    OBJECTIVES: to evaluate the results of redo bypass surgery to the infrapopliteal artery and the value of adjuvant arteriovenous fistula (AVF) in this setting. DESIGN: retrospective study. MATERIALS: fifty-one redo reconstructions to the infrapopliteal arteries were done for critical leg ischaemia in 45 patients who have had primary infrainguinal reconstructions to the popliteal artery in 20 cases (39%), the crural arteries in 18 (35%), and the pedal arteries in 13 (25%). METHODS: a PTFE prosthesis was used in 21 cases (41%). A Miller cuff was used in 16 prosthetic grafts. Adjuvant AVF was added to three autogenous vein and 12 prosthetic grafts. RESULTS: at 2 years, the primary patency rate was 42%, the secondary patency was 43%, the limb salvage was 67%, the survival was 77%, and 53% of patients were alive with salvaged leg. The primary patency rate with a vein graft was 44% at 1 year, with prosthesis plus AVF 67%, but with prosthesis without AVF only 19%. Secondary patency rates were similar. Prosthetic graft with AVF and those without AVF achieved a 1-year leg salvage rate of 100% and 51%, respectively (p =0.01). Patients with adjuvant AVF had a worse 2-year survival rate that those without AVF (31% vs 89%) (p =0.007; RR: 8.87, CI 95%: 1.62-48.42). CONCLUSIONS: redo bypass surgery using autogenous vein graft may achieve satisfactory long-term results. The use of adjuvant AVF may improve patency of redo infrapopliteal prosthetic bypass grafts.
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