title: Predictors of success following endovascular aneurysm repair: mid-term results.
abstract: Australian cases of endovascular aneurysm repair (EVAR) performed between 1999 and 2001 have been evaluated to determine the mid-term (6 months to 5 years) safety and efficacy of the procedure. This study looks at predictors of success, based on mid-term follow-up data.
  
  
  
  This study uses results obtained from a prospective semi-voluntary register (audit) of Australian data obtained from surgeons in the private and public sector.
  
  
  
  Peri-operative mortality for patients enrolled in the audit was 1.8%. Ninety-three percent of procedures were technically successful (890/961). Nearly 13% of patients have had re-interventions (mostly endoluminal) at follow-up. Analysis of audit data shows that the likelihood of experiencing post-operative complications or requiring additional procedures increases with ASA rating, increasing age, large pre-operative aneurysm size, aneurysm angle >45 degrees and number of co-morbid conditions diagnosed.
  
  
  
  This study confirms satisfactory mid-term results in a, national rather than unit specific, setting. Predictors of clinical failure or need for re-intervention include large aneurysm size, neck angulation >or=45 degrees and short infrarenal neck.
authors.affiliation: Australian Safety and Efficacy Register of New Interventional Procedures-Surgical, Royal Australasian College of Surgeons, Stepney, SA, Australia.
authors.forename: M
authors.initials: M
authors.lastname: Boult
authors.forename: W
authors.initials: W
authors.lastname: Babidge
authors.forename: G
authors.initials: G
authors.lastname: Maddern
authors.forename: M
authors.initials: M
authors.lastname: Barnes
authors.forename: R
authors.initials: R
authors.lastname: Fitridge
mesh_terms: D000368:Aged; D001014:Aortic Aneurysm / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019317:Evidence-Based Medicine; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D012086:Reoperation; D015607:Stents; D016896:Treatment Outcome