title: Endovascular repair of abdominal aortic aneurysms with concomitant common iliac artery aneurysm: outcome analysis of the EUROSTAR Experience.
abstract: BACKGROUND
  To compare outcomes following endovascular repair in abdominal aortic aneurysm (AAA) patients with and without concomitant iliac artery aneurysm disease.
  
  
  METHODS
  Data on patient characteristics and risk factors, aneurysm morphology, interventional details, complications, and mortality were retrieved from the EUROSTAR registry database for the period from October 1996 to November 2006. AAA patients without concomitant iliac aneurysm disease (group I, n = 6286) were compared to 1268 patients with aneurysmal iliac vessels (group II) regarding mortality, device-related complications, and need for secondary interventions. Logistic regression and Cox proportional hazards model were performed to assess independent associations with outcome parameters in the study groups.
  
  
  RESULTS
  Group II had more patients classified as ASA III or IV (55.1% versus 50.3% in group I; p = 0.002); they were more frequently unfit for open aortic repair (30.3% versus 23.4%; p<0.0001) and had larger-diameter aneurysms (62.3 versus 60.7 mm; p<0.0001) and infrarenal necks (24.5 versus 24.1 mm; p<0.001). In addition, group II patients had a higher rate of internal iliac artery occlusion (11.4% versus 5.2%; p<0.0001) and more significant angulation of the aortic neck (30.8% versus 24.3%; p<0.0001) and iliac artery (48.3% versus 41.9%; p<0.0001). Group II patients had higher 5-year cumulative incidences of distal type I endoleaks (9.1% versus 4.3%; p<0.0001), iliac limb occlusion (5.9% versus 4.4%; p = 0.040), secondary transfemoral intervention (17.6% versus 8.9%; p = 0.019), and aneurysm rupture (4.5% versus 1.7%; p = 0.042).
  
  
  CONCLUSIONS
  Although aneurysm-related mortality and mortality from other causes were similar in both study groups, concomitant iliac artery aneurysms in AAA patients were associated with an increased incidence of distal type I endoleak, iliac limb occlusion, and aneurysm rupture. Therefore, caution is warranted, and efforts should be made to avoid procedural mishaps.
authors.affiliation: EUROSTAR Data Registry Centre, Catharina Hospital, Eindhoven, The Netherlands.
authors.forename: Roel
authors.initials: R
authors.lastname: Hobo
authors.forename: Johannes E M
authors.initials: JE
authors.lastname: Sybrandy
authors.forename: Peter L
authors.initials: PL
authors.lastname: Harris
authors.forename: Jacob
authors.initials: J
authors.lastname: Buth
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017542:Aneurysm, Ruptured / Q000453:epidemiology; D017544:Aortic Aneurysm, Abdominal / Q000150:complications / Q000401:mortality / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation; D005060:Europe; D005260:Female; D006801:Humans; D017543:Iliac Aneurysm / Q000150:complications / Q000401:mortality / Q000601:surgery*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D017063:Outcome Assessment, Health Care; D011183:Postoperative Complications / Q000453:epidemiology; D016016:Proportional Hazards Models; D012042:Registries; D012086:Reoperation; D012307:Risk Factors; D015607:Stents; D015996:Survival Rate