title: Initial single-site experience with the Ovation abdominal stent-graft system in patients with challenging aortoiliac anatomy.
abstract: BACKGROUND
  Aim of the study was to evaluate the initial results of endovascular aneurysm repair with the Ovation abdominal stent-graft system in patients with challenging aortoiliac anatomy.
  
  
  METHODS
  The Ovation stent-graft is an ultra-low profile, modular endovascular graft characterized by a 14F OD delivery system, active suprarenal fixation, and polymer-filled proximal rings that allow sealing in short (≥7 mm) proximal necks. Between November 2010 and January 2012, 14 patients with abdominal aortic aneurysms (AAA) (male: 100%, mean age: 76 years, mean AAA diameter: 54 mm) and challenging aortoiliac anatomy were treated with the Ovation endograft at a single centre. Mean patient follow-up was 5 months.
  
  
  RESULTS
  All cases were performed under local or epidural anesthesia. No operative deaths or major complications were noted. A type I endoleak was detected on final angiogram in one case, which was successfully treated with additional ballooning and Palmaz stenting of the hooking landing zone. One patient died at 2 months due to myocardial infarction unrelated to the device or procedure. AAA-related mortality was 0%. No AAA rupture, AAA enlargement, type I or III endoleak, stent migration, access site complication, or conversion to open surgery was reported during follow-up. A type II endoleak was successfully treated with a right lumbar artery embolization at 4 months. Occlusion of an iliac axis was successfully managed with local fibrinolysis and implantation of a covered stent in the external iliac artery.
  
  
  CONCLUSIONS
  Initial outcomes of this single-center experience suggest that the Ovation abdominal stent-graft system is a promising treatment in AAA patients with challenging aortoiliac anatomy.
authors.affiliation: Department of Vascular Surgery, Policlinico Umberto I, "Sapienza" University, Rome, Italy - luciano.bresadola@uniroma1.it.
authors.forename: Luigi
authors.initials: L
authors.lastname: Irace
authors.forename: Stefano
authors.initials: S
authors.lastname: Venosi
authors.forename: Roberto
authors.initials: R
authors.lastname: Gattuso
authors.forename: Antonella
authors.initials: A
authors.lastname: Laurito
authors.forename: Valentina
authors.initials: V
authors.lastname: Pompa
authors.forename: Giacomo
authors.initials: G
authors.lastname: Pasinati
authors.forename: Luciano
authors.initials: L
authors.lastname: Bresadola
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000601:surgery*; D001027:Aortography / Q000379:methods; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation*; D000072226:Computed Tomography Angiography; D057510:Endovascular Procedures / Q000009:adverse effects / Q000295:instrumentation*; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging; D008297:Male; D011183:Postoperative Complications / Q000209:etiology; D011474:Prosthesis Design; D012307:Risk Factors; D012384:Rome; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome