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  • Title: Endovascular embolization of symptomatic arteriovenous fistulas secondary to lower-limb in situ venous bypass grafts.
    Author: Vidal V, Therasse E, Jacquier A, Giroux MF, Bommart S, Bartoli JM, Oliva VL, Cohen F, Blair JF, Moulin G, Philie M, Soulez G.
    Journal: J Vasc Interv Radiol; 2006 Mar; 17(3):481-6. PubMed ID: 16567672.
    Abstract:
    PURPOSE: To evaluate the safety and efficacy of endovascular treatment of symptomatic arteriovenous (AV) fistulas associated with femoropopliteal in situ venous bypass grafts. MATERIALS AND METHODS: Twenty-one patients underwent embolization of symptomatic AV fistulas associated with lower-limb bypass with use of the saphenous vein (n = 16) or femoral vein (n = 5). The procedures were performed with microcatheters and metallic coils. Indications for embolization were venous congestion (n = 15) and arterial insufficiency (n = 6). Eight patients had persistent lower-limb edema, seven had painful inflammatory skin thickening, three had intermittent claudication, and three had nonhealing ulcers. RESULTS: Forty-four AV fistulas were embolized. Symptoms of venous congestion regressed completely in 12 of 15 patients (80%). Partial symptom improvement was achieved in three other patients (20%), two of whom had persistent lower-limb edema and bypass with use of the femoral vein. Five of six patients with ischemic symptoms (83%) had complete symptom relief. One patient (17%) whose ischemic ulcer did not recover despite successful embolization of AV fistulas required an amputation 4 months later. Overall, 17 of 21 patients (81%) showed complete recovery of clinical symptoms. There was no bypass occlusion during follow-up (mean, 17.5 months; range, 1-45 months). CONCLUSIONS: Embolization of symptomatic AV fistulas secondary to lower-limb in situ venous bypass is a safe and efficient alternative to surgical ligature. Complete regression of clinical symptoms is less likely when the bypass is performed with use of the femoral vein.
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