Lower Extremity Microembolism in Open vs. Endovascular Abdominal Aortic Aneurysm Repair

Frontiers in Surgery
Shahab ToursavadkohiAlexander Shepard


Although previous studies have documented the occurrence of microembolization during abdominal aortic aneurysm (AAA) repair by both open and endovascular approaches, no study has compared the downstream effects of these two repair techniques on lower extremity hemodynamics. In this prospective cohort study, 20 patients were treated with endovascular aneurysm repair (EVAR) (11 Zenith, 8 Excluder, and 1 Medtronic) and 18 patients with open repair (OR) (16 bifurcated grafts, 2 tube grafts). Pre- and postoperative ankle-brachial indices (ABIs) and toe-brachial indices (TBIs) were measured preoperatively and on postoperative day (POD) 1 and 5. Demographics and preoperative ABIs/TBIs were identical in EVAR (0.97/0.63) and OR (0.96/0.63) patients (p = 0.21). There was a significant decrease in ABIs/TBIs following both EVAR (0.83/0.52, p = 0.01) and OR (0.73/0.39, p = 0.003) on POD #1, although this decrease was greater following OR than EVAR (p = 0.002). This difference largely resolved by POD #5 (p = 0.41). In the OR group, TBIs in the limb in which flow was restored first was significantly reduced compared to the contralateral limb (0.50 vs. 0.61, p = 0.03). In the EVAR group, there was also a difference in TBIs between the main bod...Continue Reading


Apr 1, 1995·Journal of Vascular Surgery·J C Parodi
Apr 1, 1996·The British Journal of Surgery·A NasimP R Bell
May 4, 1996·British Journal of Hospital Medicine·M G Robson, J E Scoble
Jan 1, 1997·Journal of Vascular Surgery·M M ThompsonP R Bell
Jan 1, 1997·The Australian and New Zealand Journal of Surgery·G Kuhan, S Raptis
Apr 23, 1999·American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation·X BelenfantC Jacquot
Dec 21, 2000·The British Journal of Dermatology·T M Finch, K S Ryatt
Jan 5, 2002·Annals of Vascular Surgery·B AljabriO K Steinmetz
Mar 13, 2003·Journal of Vascular and Interventional Radiology : JVIR·Jason R HarrisArthur C Waltman
Mar 31, 2004·Surgery Today·Naoki HayashidaKatsuhiko Tatsuno
Oct 9, 2004·Journal of Vascular Surgery·Thomas S MaldonadoThomas S Riles
Apr 13, 2010·The New England Journal of Medicine·Roger M GreenhalghMark J Sculpher
May 21, 2010·The New England Journal of Medicine·Jorg L De BruinUNKNOWN DREAM Study Group

❮ Previous
Next ❯


Apr 30, 2020·Cardiology in Review·George L Hines, Helen H Liu

❮ Previous
Next ❯

Related Concepts

Related Feeds


Aneurysms are outward distensions or bulges that occurs in a weakened wall of blood vessels. Discover the latest research on aneurysms here.

Aortic Aneurysm

An aortic aneurysm is the weakening and bulging of the blood vessel wall in the aorta. This causes dilatation of the aorta, which is usually asymptomatic but carries the risk of rupture and hemorrhage. Find the latest research on aortic aneurysms here.