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  • Title: Dacron or PTFE for above-knee femoropopliteal bypass. a multicenter randomised study.
    Author: Jensen LP, Lepäntalo M, Fossdal JE, Røder OC, Jensen BS, Madsen MS, Grenager O, Fasting H, Myhre HO, Baekgaard N, Nielsen OM, Helgstrand U, Schroeder TV.
    Journal: Eur J Vasc Endovasc Surg; 2007 Jul; 34(1):44-9. PubMed ID: 17400486.
    Abstract:
    OBJECTIVES: To compare polytetrafluorethylene (PTFE) and polyester grafts (Dacron) for above knee femoropopliteal bypass. DESIGN: Multicenter randomised clinical trial. MATERIAL AND METHODS: 427 patients were randomised between 6mm Dacron (Uni-Graft, B. Braun Melsungen AG, 34212 Melsungen, Germany) and PTFE (Goretex, W. L. Gore & Ass. Inc., Newark DE 19711, USA) above-knee femoropopliteal bypass grafts within 13 centres in Denmark (n=261), Norway (n=113) & Finland (n=53) between 1993 and 1998. Fourteen (3%) patients were excluded, leaving 413 patients with 208 Dacron and 205 PTFE grafts for analysis. Age, gender, indication (claudication: 65%), run-off (2 or 3 vessels: 76%), diabetes (17%) and hypertension (31%) as well as cerebrovascular (9%) and cardiac (33%) risks were evenly distributed. Patients were followed postoperatively at 1, 12 and 24 months. Patency assessment was based on ankle-brachial pressures or imaging in case of doubt. RESULTS: The two-year primary patency rates for Dacron and PTFE were 70% and 57% (p=0.02), whereas the secondary patency rates were 76% and 65% (p=0.04), respectively. Primary patency at two years was significantly influenced by the number of patent crural vessels (two or three 67%, one 50%, p=0.01). Amputations at two years, major in 4% and minor in 3%, 30-days mortality and complications (wound infections: 3% and other wound complications: 13%) occurred equally frequent in both groups. At two years, patients treated for critical limb ischemia had a major amputation more often than patients operated on for intermittent claudication, 10 and 3 respectively (p=0.003), and had higher mortality rates, 20% and 8% respectively (p=0.001). CONCLUSION: This trial confirms that Dacron is at least as durable as PTFE for above-knee bypass procedures, and might even be superior.
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