title: Association between the SVS/AAVS anatomical severity grading score and operative outcomes in fenestrated endovascular repair of juxtarenal aortic aneurysm.
abstract: OBJECTIVE
  To evaluate the association between the Society for Vascular Surgery/American Association for Vascular Surgery (SVS/AAVS) anatomical severity grading (ASG) score and operative outcomes in fenestrated endovascular repair (f-EVAR) for juxtarenal aortic aneurysm.
  
  
  METHODS
  A review was conducted of all patients treated at our clinic with commercially available, custom-made f-EVAR devices between June 2007 and December 2011. Preoperative computed tomography (CT) scans were analyzed in a dedicated vascular 3-dimensional workstation for calculation of the ASG score. Of the 100 patients treated with f-EVAR during the study period, 88 (69 men; mean age 70 years, range 50-82) had high quality CT scans available for generating semiautomatic centerline-of-flow reconstructions needed to calculate the ASG score. The mean score was used to divide the patients into high and low score groups for comparison of operative outcomes.
  
  
  RESULTS
  A total ASG score ≥24 was associated with longer procedure time (357±121 vs. 298±131 minutes, p=0.03) and more frequent intraoperative adjunctive maneuvers (48% vs. 29% of patients, p=0.05). An ASG neck score ≥7 was associated with longer procedure time (365±126 vs. 288±119 minutes, p<0.01), more operative adverse events (31% vs. 14% of patients, p=0.05), higher radiation exposure (53828±37341 vs. 38788±25846 μGym(2), p=0.04), and more frequent postoperative complications (46% vs. 18% of patients, p<0.01). An ASG aneurysm score ≥5 was associated with operative adverse events (44% vs. 19% of patients, p=0.04). No relationship was found between the ASG score and blood loss, contrast volume, fluoroscopy time, or hospital stays.
  
  
  CONCLUSIONS
  The ASG score is associated with operative adverse events, intraoperative adjunctive maneuvers, radiation exposure, and postoperative complications in patients treated with f-EVAR for juxtarenal aortic aneurysm.
authors.affiliation: Vascular Center, Skåne University Hospital, Malmö, Sweden. thorark@hotmail.com
authors.forename: Thorarinn
authors.initials: T
authors.lastname: Kristmundsson
authors.forename: Björn
authors.initials: B
authors.lastname: Sonesson
authors.forename: Nuno
authors.initials: N
authors.lastname: Dias
authors.forename: Martin
authors.initials: M
authors.lastname: Malina
authors.forename: Timothy
authors.initials: T
authors.lastname: Resch
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000175:diagnosis* / Q000601:surgery*; D057510:Endovascular Procedures / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D012955:Societies, Medical; D016896:Treatment Outcome