title: EVAR in small versus large aneurysms: does size influence outcome?
abstract: OBJECTIVE
  To determine whether there is a difference in outcome between endovascular repair of abdominal aortic aneurysm (EVAR) of small versus large aneurysms.
  
  
  METHODS
  A total of 192 patients from the Power-link trial were subdivided into small abdominal aortic aneurysms (AAA; </=5 cm) and large AAA (>5 cm) groups. Demographics, perioperative morbidity, mortality, overall survival, and freedom from major adverse events, endoleak, aneurysm-related death, migration, and secondary procedures were assessed. Aneurysmal involvement of the iliacs as well as neck length and angulation was compared between groups.
  
  
  RESULTS
  Perioperative morbidity (P = 1.000), mortality (P = .4603), and extent of iliac involvement did not differ between groups (P = .2260). The necks in small AAA were longer (P = .0028) and less angulated (P < .0001). There was no difference in overall survival (P = .6066), freedom from major adverse events (P = .7842), endoleak, (P = .1832), migration (P = .5765), aneurysm-related death (P = .4728), or need for secondary procedures (P = .2323).
  
  
  CONCLUSIONS
  Under controlled conditions of patient and device selection, there is no significant difference in outcome for EVAR of small versus large AAA.
authors.affiliation: Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA. Grace.Wang@uphs.upenn.edu
authors.forename: Grace J
authors.initials: GJ
authors.lastname: Wang
authors.forename: Jeffrey P
authors.initials: JP
authors.lastname: Carpenter
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation / Q000401:mortality; D005260:Female; D005548:Foreign-Body Migration / Q000209:etiology; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D012189:Retrospective Studies; D018570:Risk Assessment; D013997:Time Factors; D016896:Treatment Outcome