Abstract

YUGUEROS CASTELLNOU, Xavier. Experimental in vitro study of parallel stent technique in endovascular repair of complex abdominal aortic aneurysms. Angiología [online]. 2021, vol.73, n.5, pp.228-238.  Epub Oct 18, 2021. ISSN 1695-2987.  https://dx.doi.org/10.20960/angiologia.00269.

The aim of this study was evaluate using in vitro models, two different configurations of parallel stenting: 2 and 3 visceral chimneys (chEVAR) and in a sandwich configuration to preserve the hypogastric artery, analysing which is the best combination of materials, the optimal oversizing and the best measurement method.

Regarding 2-3 chimney configuration, our results showed a better adaptation of the devices with increasing oversizing with a lower compression rate in high radial force combinations, although with a significantly worse sealing.

Regarding sandwich configuration, our results also showed gutter area reduction when increasing oversizing although higher compression rate and inflodin, without significant differences between the devices used.

Regarding oversizing measuring methods, a practically perfect correlation was obtained between area oversizing (classically described) and perimeter and diameter oversizing.

In conclusion, the results of this in vitro study may be useful in planning real EVAR procedures with parallel stenting in the absence of current evidence to support specific recommendations.

Keywords : Parallel stenting; Chimney; chEVAR; Sandwich; Oversizing.

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