title: Broadening the applicability of endovascular aneurysm repair: the use of iliac conduits.
abstract: OBJECTIVE
  Suboptimal iliac anatomy has sometimes precluded endovascular repair of abdominal aortic aneurysm (AAA). In an effort to increase the applicability of endovascular repair, a limited retroperitoneal approach and iliac conduit was used in some patients with unsuitable iliac anatomy at high risk for open repair.
  
  
  METHODS
  Charts and imaging studies of 312 patients who underwent endovascular (AAA) repair at the Cleveland Clinic Foundation between June 1999 and November 2000 were reviewed. Among these, 22 patients with complex iliac anatomy had an iliac conduit placed. Seventeen of these procedures were planned, but five were unplanned and placed after an iliac artery injury. A group of 17 patients who underwent a standard endovascular repair without conduits was selected and matched to the 17 patients in the planned conduit group by baseline comorbidities. The conduits were 8-mm or 10-mm polyester grafts sewn proximally to the common iliac artery and provided unobstructed access to the aneurysm. After insertion of the endograft device through the conduit, the distal end of the conduit was anastomosed to the external iliac or common femoral vessels.
  
  
  RESULTS
  Operative time and estimated blood loss were higher among patients in whom conduits were performed, especially when performed urgently as an unplanned procedure. Although operative time and intensive care unit and hospital stays were longer for the group of patients with iliac conduits, the cardiac pulmonary and renal complication rates were similar for the conduit and the standard endovascular repair group.
  
  
  CONCLUSIONS
  The use of a limited retroperitoneal approach and iliac conduit for patients with difficult iliac anatomy increases the applicability of the endovascular repair of AAA. This technique should be considered when an open surgical approach is inadvisable on the basis of medical comorbidities.
authors.affiliation: Division of Vascular Surgery, Cleveland Clinic Foundation, Ohio 44195, USA.
authors.forename: Ahmad M
authors.initials: AM
authors.lastname: Abu-Ghaida
authors.forename: Dan G
authors.initials: DG
authors.lastname: Clair
authors.forename: Roy K
authors.initials: RK
authors.lastname: Greenberg
authors.forename: Sunita
authors.initials: S
authors.lastname: Srivastava
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: O'hara
authors.forename: Kenneth
authors.initials: K
authors.lastname: Ouriel
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000714:Anastomosis, Surgical; D017544:Aortic Aneurysm, Abdominal / Q000401:mortality / Q000601:surgery*; D005260:Female; D006801:Humans; D007083:Iliac Artery / Q000601:surgery; D007866:Leg / Q000098:blood supply; D008297:Male; D008875:Middle Aged; D009820:Ohio; D011183:Postoperative Complications / Q000209:etiology / Q000401:mortality; D012307:Risk Factors; D016019:Survival Analysis; D013997:Time Factors; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures