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  • Title: Partial replacement of an infected arterial graft by a new prosthetic polytetrafluoroethylene segment: a new therapeutic option.
    Author: Miller JH.
    Journal: J Vasc Surg; 1993 Mar; 17(3):546-58. PubMed ID: 8445751.
    Abstract:
    PURPOSE: As the title suggests, this is an account of treating infected arterial grafts other than by the accepted methods of complete graft removal and revascularization with autogenous material or extraanatomic bypass. METHODS: Since 1973, 42 patients with infected arterial grafts (n = 35) or autogenous reconstructions (n = 7) were seen with false aneurysm, hemorrhage, or perigraft or perianastomotic pus and were treated by removal of the infected graft and immediate adjacent or in situ revascularization by polytetrafluoroethylene (PTFE) in 39 cases and Dacron in three cases. Management plan included (1) removal of only the obviously infected part of the original graft, (2) obliteration of the infected anastomotic site, and (3) placement of the new PTFE graft in an adjacent clean or debrided route. So treated were 15 aortic Dacron grafts, 20 PTFE grafts (2 iliofemoral, 3 femorofemoral, and 15 femorodistal), and 7 autogenous reconstructions with bleeding. Partial graft salvage was attempted in 10 of 15 Dacron and 19 of 20 PTFE grafts. RESULTS: Four patients required further removal of the original infected graft (three Dacron, one PTFE), giving an ultimate success rate of 7 of 15 Dacron and 18 of 20 PTFE grafts; two patients required further obliteration of the original adjacent infected arterial segment because of rebleeding. An additional PTFE segment was joined successfully to incorporated PTFE in all six repeat operations. Initial failure did not prejudice the outcome; direct arterial flow to at least midthigh level was preserved in 37 of the 42 patients for a mean period of 40 months (range 9 to 130 months). Three of the new PTFE grafts occluded and became infected, which led to amputation and one death at a secondary operation. Visceral complications caused the only two other deaths in the aortic group. Five late amputations (four below the knee and one above the knee) were required because of femorodistal graft occlusion. CONCLUSIONS: Partial removal of infected grafts with adjacent or in situ replacement by PTFE is possible, simplifies management, and permits maintenance of distal circulation with low morbidity and mortality rates.
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