EVAR in small versus large aneurysms: does size influence outcome?
Related Experiment Video
Updated: Jun 27, 2026

Microsurgical Creation of Giant Bifurcation Aneurysms in Rabbits for the Evaluation of Endovascular Devices
Published on: September 8, 2023
Grace J Wang1, Jeffrey P Carpenter
1Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA. Grace.Wang@uphs.upenn.edu
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).
Conclusion:
Under controlled conditions of patient and device selection, there is no significant difference in outcome for EVAR of small versus large AAA.
Related Concept Videos
Aneurysm III: Interprofessional Care
Aneurysm I: Introduction
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Aneurysm IV: Nursing Management

