title: Thromboembolic complications after Zenith® Low Profile Endovascular Graft for infrarenal abdominal aneurysms.
abstract: OBJECTIVE
  The purpose of this study was to objectify and evaluate risk factors for thromboembolic complications after treatment with a Zenith(®) Low Profile Endovascular Graft (Zenith LP). Results were compared with those in the recent literature on endovascular aortic repair (EVAR) and with the thromboembolic complications in the patient group treated with a Zenith Flex Endovascular Graft in our institute in the period before the use of the Zenith LP.
  
  
  METHODS
  All consecutive patients who were suitable for treatment with a Zenith LP endograft between October 2010 and December 2011 were included. The preprocedural computed tomography scan (CT), procedural angiographic images, and the postprocedural CT scans were evaluated for risk factors for and signs of thromboembolic complications. All patients treated between December 2007 and November 2012 with a Zenith Flex endograft were retrospectively evaluated for thromboembolic complications.
  
  
  RESULTS
  In the study period 17 patients were treated with a LP Zenith endograft. Limb occlusion occurred in 35 % of the patients. Limb occlusions occurred in 24 % of the limbs at risk (one limb occluded twice). In one patient two risk factors for limb occlusion were identified. Between December 2007 and November 2012, a total of 43 patients were treated with a Zenith Flex endograft. No limb occlusion or distal embolization occurred.
  
  
  CONCLUSIONS
  Despite that this was a small retrospective study, the Zenith LP endograft seems to be associated with more frequent thromboembolic complications compared with the known limb occlusion rates in the literature and those of the patients treated with a Zenith Flex endograft in our institute.
authors.affiliation: Department of Radiology, Medical Center Westeinde, Postbus 432, 2501 CK, The Hague, The Netherlands, t_urlings@hotmail.com.
authors.forename: T A J
authors.initials: TA
authors.lastname: Urlings
authors.forename: A C
authors.initials: AC
authors.lastname: de Vries
authors.forename: J C A
authors.initials: JC
authors.lastname: de Mol van Otterloo
authors.forename: D
authors.initials: D
authors.lastname: Eefting
authors.forename: E
authors.initials: E
authors.lastname: van der Linden
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000628:therapy*; D005260:Female; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011474:Prosthesis Design; D012189:Retrospective Studies; D012307:Risk Factors; D015607:Stents; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014654:Vascular Patency; D054556:Venous Thromboembolism / Q000000981:diagnostic imaging*