title: Total Viabahn endoprosthesis collapse.
abstract: We present a case of Viabahn (W. L. Gore & Associates, Flagstaff, Ariz) collapse during popliteal artery aneurysm treatment. An elderly man with severe comorbidities presented with a 34-mm popliteal artery aneurysm. Proximal and distal landing sites of 11 and 9 mm, respectively, demonstrated by preoperative computed tomography angiography were confirmed by intraoperative angiography. After Viabahn deployment, angiography revealed a filling defect in the distal popliteal graft with poor flow. Balloon dilatation failed. A femoropopliteal bypass with aneurysm ligation was performed. Transection of the distal popliteal vessel demonstrated complete infolding. Our choice of grafts represented 15% to 18% proximal and distal oversizing. Focal areas of relative vessel narrowing may lead to incomplete graft unfolding and graft failure.
authors.affiliation: Division of Vascular Surgery at New York University School of Medicine, New York, NY, USA.
authors.forename: Mark E
authors.initials: ME
authors.lastname: Ranson
authors.forename: Mark A
authors.initials: MA
authors.lastname: Adelman
authors.forename: Neal S
authors.initials: NS
authors.lastname: Cayne
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Maldonado
authors.forename: Bart E
authors.initials: BE
authors.lastname: Muhs
mesh_terms: D000368:Aged; D000783:Aneurysm / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects* / Q000295:instrumentation; D002404:Catheterization; D006801:Humans; D008026:Ligation; D008297:Male; D018579:Patient Selection; D011138:Polytetrafluoroethylene; D011150:Popliteal Artery / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D015607:Stents; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014654:Vascular Patency
chemical_list: D011138:Polytetrafluoroethylene