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  • Title: Durability of autogenous vein and polytetrafluoroethylene bypass grafts to the carotid arteries.
    Author: Huilgol RL, Young J, Lemech L, Stephen MS, May J, Harris JP, White GH.
    Journal: ANZ J Surg; 2006 Oct; 76(10):878-81. PubMed ID: 17007615.
    Abstract:
    BACKGROUND: Bypass for extra-cranial arterial disease is infrequently carried out. We reviewed our experience to determine the outcome of carotid artery grafting using either an autogenous vein or polytetrafluoroethylene (PTFE). METHODS: Details of patients were recorded prospectively as part of a vascular surgical registry. Patients identified from the registry as having carotid artery bypass procedures were classified according to the type of conduit used. Comparison was made between patients with autogenous vein and PTFE grafts. RESULTS: Between 1978 and 2002, 24 patients (13 men and 11 women) mean age 60.0 +/- 13.4 years (range, 20-81 years) underwent 28 bypass procedures (three were bilateral and one was a reoperation). Symptomatic carotid disease was the clinical indication in 20 of 28 procedures (71.4%). Pathological indications included advanced atherosclerosis of the carotid arteries (15), past radiotherapy (4), failed stenting (3), resection of carotid body tumour (2), trauma (1), reoperation on a failed graft (1), carotid aneurysm (1) and iatrogenic carotid occlusion (1). An autogenous vein was used in 16, PTFE in 11 and autogenous artery in 1 of the patients. Using the Kaplan-Meier method, the overall patient cumulative 5-year survival was 84% and cumulative 5-year stroke-free survival was 93%. The combined perioperative stroke and mortality rate was 7.1%. Two patients had transient ischaemic attacks (7.1%), one had cranial nerve palsies (3.6%) and one required reoperation for bleeding (3.6%). Five-year cumulative graft primary patency using the Kaplan-Meier method was 74% for PTFE grafts and 92% for autogenous vein grafts (P = 0.37). CONCLUSION: Carotid artery bypass is a safe and a useful treatment option for complex extra-cranial arterial disease. Either PTFE or autogenous veins may be used as conduits.
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