Abstract
To evaluate frequency and influence of perfused lumbar arteries (pLA) and inferior mesenteric arteries (pIMA) on develop-ment and incidence of type-2 endoleaks (EL-II) and volume changes of AAA after EVR. 114 patients underwent transfemoral insertion of endoluminal stent-grafts for treatment of AAA. Pre- and post-operative CT scans before discharge, at 1, 3, 6 months and biannually thereafter were performed ; pLA and pIMA were evaluated in each follow-up scan. Volumes of the aneurysmal sacs were measured. Median follow-up was 24 months. Six months after stent-graft implantation pIMA and/or at least 2 pLA were seen in 45 patients (50,5%) ; 11 patients (12,4% of the study cohort) had an EL-II. A tendency to minor mean volume loss in patients with pLA/ ptIMA and significant trend to volume increase in patients with EL-II in later follow-ups was seen. We found a high incidence of pLA/ptIMA in patients after EVR. Persistent lumbar and inferior mesenteric artery perfusion is associated with significantly higher EL-II rates after EVR of AAA. Significant différences in volume changes in later follow-ups were seen between patients with or without EL-II.
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