Research progress and application of the aortic taper angle

Abstract

Endovascular repair has gained worldwide popularity for the treatment of aortic dissection and aortic aneurysm. The non-tapered stents are selected usually. The aortic diameters vary in different level. High incidence of distal stent-induced complications is closely related to the aortic taper angle. According to several published studies, the aortic taper angle could be evaluated by establishing geometric model. Applications of tapered stents can significantly reducing the incidence of distal stent-induced complications. This review summaries the latest researches in the studies of the progress and the application of the aortic taper angle and the tapered stents, providing a reference for endovascular stent-graft selecting in the treatment of aortic dissection and aortic aneurysm. Key words: Aneurysm, dissecting; Stents; Angioplasty; Taper angle; Aortic diameter