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  • Title: Hemodialysis graft salvage with endoluminal stents.
    Author: Hood DB, Yellin AE, Richman MF, Weaver FA, Katz MD.
    Journal: Am Surg; 1994 Oct; 60(10):733-7. PubMed ID: 7944033.
    Abstract:
    The most common cause of failure of hemodialysis access sites is stenosis within the site. The stenoses have traditionally been corrected surgically, but endovascular techniques may be an alternative method to treat these flow-limiting lesions and maintain graft patency. Over a recent 17-month period, endoluminal stents to relieve stenoses resistant to balloon dilatation alone were placed in 14 access sites. All sites were located on the upper extremity (13 PTFE bridge grafts and 1 A-V fistula). A total of 20 stents were placed: seven at the venous anastomosis, 12 in the venous outflow tract (including 3 in the subclavian vein), and one within the graft. Nine patients had placement of a single stent, four patients had two stents placed, and one patient had three. An additional eight stenotic lesions within these 14 sites were successfully dilated without need of a stent. After stent placement, these 14 sites have remained functional for a mean of 6.2 months. Four were functioning without further intervention at a mean of 8.5 months. Nine sites occluded at a mean of 4.7 months. The remaining site remained functional until death of the patient 10 months after stent placement. Of the nine failed sites, four developed restenosis at the site of stent placement, four developed stenoses at other sites, and the other site was abandoned. Three stents were placed in subclavian vein stenoses, and none of these has failed. Further study is necessary to determine whether endovascular stenting of dialysis access site stenoses will prove to be a durable, cost-effective alternative to surgical revision.
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