Placement of a Fenestrated Palmaz Stent Across the Renal Arteries. Feasibility and Outcome in an Animal Study

Desgranges, Pascal; Kobeiter, Hicham; Coumbaras, M.; Laer, O. Van; Méllière, D; Mathieu, Didier; Becquemin, Jean‐Pierre

doi:10.1053/ejvs.1999.0990

Cited by 4 publications

(1 citation statement)

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“…[64][65][66] Clinical studies showed that stenting of the fenestration/ renal ostium junction have helped to maintain renal patency. [64][65][66] Although animal studies suggested that a fenestrated stent-graft across the renal ostium might help avoid neo-intimal encroachment on the renal ostia, 67 instent stenosis needs to be considered as a potential complication. Technically, a fenestrated endograft is quite challenging, requiring accurate planning and device construction based on high-quality 3D CT and angiographic imaging.…”

Section: Future Developments and Strategies Fenestrated Stent-graftsmentioning

confidence: 99%

Transrenal Fixation of Aortic Stent-Grafts:Current Status and Future Directions

Sun

2004

Journal of Endovascular Therapy

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Aortic stent-graft repair has been widely used in clinical practice for more than a decade, achieving satisfactory results compared to open surgical techniques. Transrenal fixation of stent-grafts is designed to obtain secure fixation of the proximal end of the stent-graft to avoid graft migration and to prevent type I endoleak. Unlike infrarenal deployment of stent-grafts, transrenal fixation takes advantage of the relative stability of the suprarenal aorta as a landing zone for the uncovered struts of the proximal stent. These transostial wires have sparked concern about the patency of the renal arteries, interference with renal blood flow, and effects on renal function. Although short to midterm results with suprarenal stent-grafts have not shown significant changes in renal function, long-term effects of this technique are still not fully understood. This review will explore the current status of transrenal fixation of aortic stent-grafts, potential risks of stent struts relative to the renal ostium, alternative methods to preserve blood flow to the renal arteries, and future directions or developments in stent-graft design to prevent myointimal proliferation around the stent struts.

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