Efficacy of protected renal artery primary stenting in the solitary functioning kidney

A, Preoperative DSA demonstrating a significant left renal artery ostial stenosis in a solitary functioning kidney. B, Angiogram after stent placement showing successful revascularization without residual stenosis. Note the contrast floating around the filter due to incomplete apposition to the vessel wall (arrow).

Kaplan-Meier analysis of primary patency after protected renal artery stenting in the solitary functioning kidney.

Drawing shows the use of an eccentric filter with a beveled ring in order to provide complete renal protection in cases of short main renal artery; the tip of the filter is anchored distally in one renal artery branch, while the proximal beveled part of the basket remains in the main renal artery protecting both renal artery divisions.