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Renal perfusion defects after endovascular repair of abdominal aortic aneurysms.
- Source :
- Journal of Vascular & Interventional Radiology; Mar2003, Vol. 14 Issue 3, p329-333, 5p
- Publication Year :
- 2003
-
Abstract
- <bold>Purpose: </bold>To determine the prevalence of new renal perfusion defects and the association of these events with aneurysm neck atheroma during endovascular stent-graft repair of abdominal aortic aneurysm (AAA).<bold>Materials and Methods: </bold>A retrospective review was performed of 50 patients who underwent AAA repair with bifurcated endovascular stent-grafts without suprarenal components between June 1998 and May 1999. Pre- and postprocedural computed tomographic (CT) angiograms were reviewed to determine the prevalence of new renal perfusion defects. The percent volume of atheroma of the aneurysm neck was determined by three-dimensional volumetric reformation and correlated with prevalence of new postprocedural renal perfusion defects. Follow-up CT angiography was performed between 6 months and 2 years after the procedure and used to evaluate the presence of residual defects and interval changes.<bold>Results: </bold>Of 50 subjects, 18% (n = 9) had new perfusion defects presumed to be embolic in origin. Follow-up was available for four patients: scarring and cortical thinning consistent with infarction developed in two, whereas the defects resolved in the other two. Analysis of aneurysm neck revealed an average percentage of atheroma of 32% and a range of 0%-73%. In subjects with >/=40% neck atheroma, the prevalence of new renal perfusion defects was 45.4% (five of 11), compared to 10.3% (four of 39) in subjects with <40% neck atheroma. This difference was significant (P =.0170).<bold>Conclusions: </bold>In this series, the frequency of renal embolic events associated with AAA endovascular repair was 18%. Prevalence of renal embolic perfusion defects was shown to correlate with volume of aneurysm neck atheroma. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10510443
- Volume :
- 14
- Issue :
- 3
- Database :
- Supplemental Index
- Journal :
- Journal of Vascular & Interventional Radiology
- Publication Type :
- Academic Journal
- Accession number :
- 32190571
- Full Text :
- https://doi.org/10.1097/01.RVI.0000058421.01661.c5