Partial renal coverage in endovascular aneurysm repair causes unfavorable renal flow patterns in an infrarenal aneurysm model

The location of the proximal markers of endovascular aneurysm repair devices is not always at the most proximal site of the graft material, and as such, part of the coverage material may be placed over the orifice of the renal artery. A recent analysis showed an incidence of inadvertent partial coverage of 28%. The association of a slight renal artery coverage with adverse flow patterns in this study stresses the importance of avoiding any renal artery coverage during deployment of the main body. The results further act to emphasize the importance of optimal C-arm adjustment to obtain a perpendicular projection of the lowermost renal artery.