Journal of vascular surgery
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Multiple (> 1) revisions of lower extremity vein grafts may be required to maintain patency. Characteristics of recurrent lower extremity vein graft lesions and the patency achieved after multiple revisions have not been emphasized in reports on infrainguinal vein graft stenosis. This study was performed to determine (1) the patency of multiply revised lower extremity vein grafts and (2) the timing, location, and angiographic and duplex features of the recurrent lesions. ⋯ In our experience, 21% of lower extremity vein grafts requiring initial revision ultimately require additional revisions. Multiply revised lower extremity vein grafts have excellent long-term patency. Lesions occur with equal frequency at the site of prior revision and new sites. Lesions prompting revision at new sites occur significantly later and are infrequently detected on prior imaging studies.
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The objective of this study was to evaluate the feasibility of using carbon dioxide (CO(2)) as a contrast agent in performing bedside inferior vena cavagrams before the insertion of vena cava filters. There was a consecutive series of patients undergoing bedside preinsertion cavagrams with inferior vena cava filter insertion. The setting was an 825-bed tertiary care hospital. The subjects were trauma patients undergoing inferior vena cava filter insertion. ⋯ Carbon dioxide-contrasted vena cavagrams can be safely performed at the bedside, and they give good opacification of the inferior vena cava.
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During thoracoabdominal aortic aneurysm repair, a prolonged interruption of the spinal cord blood supply can result in irreversible spinal cord damage. The aim of this study was to investigate whether selective segmental artery perfusion during aortic clamping could prevent paraplegia in pigs. ⋯ In pigs, selective segmental artery perfusion can provide sufficient spinal cord blood flow to prevent paraplegia resulting from 60 minutes of aortic clamping, as shown by clinical outcomes and histopathologic examination.