TY - JOUR
TI - Factors Predisposing to Endograft Limb Occlusion after Endovascular
Aortic Repair
AU - Mantas, G. K.
AU - Antonopoulos, C. N.
AU - Sfyroeras, G. S. and
AU - Moulakakis, K. G.
AU - Kakisis, J. D.
AU - Mylonas, S. N.
AU - Liapis, C.
AU - D.
JO - European Journal of Vascular and Endovascular Surgery
PY - 2015
VL - 49
TODO - 1
SP - 39-44
PB - W B SAUNDERS CO LTD
SN - 1078-5884, 1532-2165
TODO - 10.1016/j.ejvs.2014.09.012
TODO - Limb occlusion; Endovascular abdominal aneurysm repair; Endovascular
aortic repair; Endograft; Thrombosis; Case-control study
TODO - Objectives: The aim of this study was to investigate risk factors for
endograft limb occlusion after endovascular abdominal aneurysm repair
(EVAR), using a case control design.
Methods: All patients presenting with endograft limb occlusion after
elective EVAR between January 2010 and June 2013, along with age, sex,
and type of endograft matched controls were included in the study. The
impact of atherosclerotic risk factors, anatomic characteristics of the
aneurysm, procedural details, and antiplatelet therapy was investigated.
Multivariate logistic regression analysis and conditional logistic
regression analysis for 1:3 matched pairs deriving adjusted odds ratios
(ORs) with 95% confidence intervals (Cis) in order to detect
significant risk factors for endograft limb occlusion among cases and
controls were modeled.
Results: Of the 439 patients treated by EVAR, 18 patients (4.1%)
presented with endograft limb occlusion. These patients were compared to
54 matched controls. Limb occlusion was associated with iliac artery
angulation >60 (OR = 5.76, 95% Cl = 1.24-26.74; p =.03) or perimeter
calcification >= 50% (OR = 5.87, 95% Cl = 1.10-31.32; p =.04). Limb
occlusion was also associated with >= 15% endograft oversizing in the
common iliac artery. (OR = 5.54, 95% Cl = 1.11-27.60; p =.04). No other
risk factors for limb occlusion were recognized.
Conclusions: The presence of significant angulation and calcification of
the iliac arteries as well as excessive limb oversizing appear to be
independent predictors of endograft limb occlusion after [VAR. (c)
2014 European Society for Vascular Surgery. Published by Elsevier Ltd.
All rights reserved.
ER -