{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T00:42:00Z","timestamp":1777941720738,"version":"3.51.4"},"reference-count":7,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2021,4,5]],"date-time":"2021-04-05T00:00:00Z","timestamp":1617580800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Vasc Endovascular Surg"],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>The Society for Vascular Surgery stated there are a lack of studies describing long-term surveillance for aortobifemoral (AoBF) bypasses. Our goal was to investigate the value of DU studies as a surveillance tool for AoBF bypasses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>We retrospectively identified patients in our prospectively maintained database who underwent AoBF bypasses between 1995-2018. Surveillance was performed routinely with DU post-operatively, every 6 months for 1 year, and then annually. We considered \u201cabnormal\u201d DU findings to include peri-graft fluid, pseudoaneurysm or, peak systolic velocities (PSVs) &gt; 350 cm\/sec or PSV ratio &gt; 3.5 anywhere from the proximal aortic to distal femoral anastomosis. If abnormalities were identified patients underwent intervention or shorter surveillance intervals.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Of 153 AoBF bypasses, 60 patients with 120 graft limbs fulfilled our post-operative surveillance protocol with a mean follow-up of 4.0 years (0.5-24 years). \u201cNormal\u201d DU surveillance studies were documented throughout follow-up in 112 (93%) limbs. Of these, 2 (1.7%) developed acute limb occlusion. Eight (6.7%) limbs had \u201cabnormal\u201d DU findings: 5 failing grafts with focal elevated PSVs, 2 with peri-graft fluid leading to a diagnosis of an infected graft, and 1 with a pseudoaneurysm (PSA). Contrast arteriography or CT-angiography confirmed &gt; 75% diameter stenosis, fluid or PSA in all 8 limbs. Graft revision (5 endovascular, 2 surgical) was performed in 7 of the 8 limbs initially or after 2 successive \u201cabnormal\u201d DU studies within 6 weeks of each other; 1 patient refused intervention. Without surveillance, urgent or emergent treatment might have proved necessary in 7.5% (7 + 2 = 9\/120) of cases instead of only 1.7% (2\/120) of cases.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Vascular surgeons should adopt DU as a useful surveillance tool to identify AoBF bypasses that are failing or have other problems not identified clinically. Persistence of \u201cabnormal\u201d DU findings should prompt operative or endovascular intervention.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/15385744211000276","type":"journal-article","created":{"date-parts":[[2021,4,5]],"date-time":"2021-04-05T03:21:25Z","timestamp":1617592885000},"page":"541-543","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["The Utility of Duplex Ultrasonography Surveillance in Identifying Failing Aortobifemoral Grafts"],"prefix":"10.1177","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2122-9560","authenticated-orcid":false,"given":"Krystal","family":"Maloni","sequence":"first","affiliation":[{"name":"Section of Vascular Surgery, Pennsylvania Hospital, Philadelphia, PA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keith D.","family":"Calligaro","sequence":"additional","affiliation":[{"name":"Section of Vascular Surgery, Pennsylvania Hospital, Philadelphia, PA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0095-0746","authenticated-orcid":false,"given":"Nicholas","family":"Madden","sequence":"additional","affiliation":[{"name":"Section of Vascular Surgery, Pennsylvania Hospital, Philadelphia, PA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Douglas","family":"Troutman","sequence":"additional","affiliation":[{"name":"Section of Vascular Surgery, Pennsylvania Hospital, Philadelphia, PA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kunal","family":"Vani","sequence":"additional","affiliation":[{"name":"Section of Vascular Surgery, Pennsylvania Hospital, Philadelphia, PA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthew J.","family":"Dougherty","sequence":"additional","affiliation":[{"name":"Section of Vascular Surgery, Pennsylvania Hospital, Philadelphia, PA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,4,5]]},"reference":[{"key":"bibr1-15385744211000276","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2018.04.018"},{"key":"bibr2-15385744211000276","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2008.07.004"},{"issue":"6","key":"bibr3-15385744211000276","first-page":"905","volume":"41","author":"Onohara T","year":"2000","journal-title":"J Cardiovasc Surg (Torino)"},{"key":"bibr4-15385744211000276","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-6060(96)80063-8"},{"key":"bibr5-15385744211000276","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2014.08.071"},{"key":"bibr6-15385744211000276","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2015.02.025"},{"key":"bibr7-15385744211000276","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2014.02.002"}],"container-title":["Vascular and Endovascular Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/15385744211000276","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/15385744211000276","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/15385744211000276","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T06:31:31Z","timestamp":1777703491000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/15385744211000276"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,5]]},"references-count":7,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2021,8]]}},"alternative-id":["10.1177\/15385744211000276"],"URL":"https:\/\/doi.org\/10.1177\/15385744211000276","relation":{},"ISSN":["1538-5744","1938-9116"],"issn-type":[{"value":"1538-5744","type":"print"},{"value":"1938-9116","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,4,5]]}}}