Residual arteriovenous fistulae after "closed" in situ bypass grafting: an overrated problem.
ABSTRACT To prospectively evaluate the incidence and consequences of residual arteriovenous (AV)-fistulae after "closed" in situ bypass grafting.
In 34 patients, 35 "closed" in situ bypasses were performed. Postoperative assessment of residual AV-fistulae and bypass patency was performed with duplex scanning.
Postoperative mortality was 3%. During 35 "closed" in situ bypass procedures 216 side branches were coil embolised. Postoperatively 39 AV-fistulae were detected (15% of the total number of 216 + 39 = 255 side branches). Of these, 13 (5%) closed spontaneously. Fifteen (6%) remained unchanged and 11 (4%) were treated. In three patients four asymptomatic residual AV-fistulae were treated. In four patients seven symptomatic AV-fistulae were treated for: decreased distal bypass flow in one; persistent leg oedema in one; pain and redness of the skin in two. One-year primary patency was 80% (SE 8.4%). Residual AV-fistulae were detected in none of six bypass occlusions during follow-up.
Residual AV-fistulae detected following "closed" in situ bypass grafting only need treatment if they are symptomatic, which is uncommon.
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ABSTRACT: The in situ bypass procedure for lower extremity limb salvage requires a long continuous incision or multiple interrupted incisions over the greater saphenous vein to ligate the saphenous vein side branches. This can result in wound complications that frequently prolong hospital stay and threaten the graft. In an effort to reduce the incidence of wound complications, alternate methods of occluding the vein side branches have been used. One method is to deliver coils under angioscopic vision into the saphenous vein side branches. This report details a simplified technique that uses widely available catheter-based equipment to perform saphenous vein side branch occlusion under fluoroscopic guidance.Journal of Vascular Surgery 11/2003; 38(4):856-8. · 2.88 Impact Factor
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ABSTRACT: To find out whether intraoperative angioscopic assistance has any effect on graft outcome in patients with critical leg ischemia. Material And Methods: One hundred one patients requiring a below-knee bypass were assigned to undergo in situ saphenous vein bypass with or without intraoperative angioscopic assistance; otherwise treated similarly including preoperative duplex vein mapping, intraoperative graft flow measurements, and angiography. Data on operative details, morbidity, hospital stay, and graft patency were collected prospectively and compared. All patients were followed up for 12 months. The group that underwent angioscopy (A) and the control group (B) were similar in all respects, except for the number of patients enrolled in the groups (32 and 69, respectively). Angioscopy revealed incompletely destructed valves in 34 patients (range, 0 to 5; mean 1), undiagnosed vein branches in 111 patients (mean 4.3), and partly occluding thrombus in 5 patients. The number of postoperative arteriovenous fistulas with signs of failing graft and a need for angiographic or surgical reintervention were significantly higher in group B (P <.0001). The 1-year primary patency rate was significantly better in group A (P <.01), but the primary assisted and secondary patency rates did not differ between the groups. Angioscopic assistance has an impact on primary graft patency, minimizes the risk for graft failure and thus reduces the need for reintervention by allowing identification of persistent saphenous vein branches, incomplete valve destruction, and partly occluding graft thrombus without adding extra operative time.Journal of Vascular Surgery 04/2002; 35(4):759-65. · 2.88 Impact Factor
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ABSTRACT: To evaluate the safety and efficacy of endovascular treatment of symptomatic arteriovenous (AV) fistulas associated with femoropopliteal in situ venous bypass grafts. 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. 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). 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.Journal of Vascular and Interventional Radiology 04/2006; 17(3):481-6. · 2.00 Impact Factor