Non-randomized studies have shown that de-airing of the delivery system with an increased volume of saline may be associated to a decrease in periprocedural stroke during thoracic endovascular aortic repair. This study is designed to provide evidence that 4xIFU-dose volume of saline flush vs. standard IFU-dose saline flush is associated to a decrease in the amount of intra-sac air detected on the first follow-up imaging after EVAR.

Inclusion Criteria:

• endovascular aortic repair of an abdominal aortic aneurysm using either of these devices: Terumo/Bolton Treo, Terumo Anaconda, Cook Zenith Alpha Abdominal

Exclusion Criteria:

• concomitant use of an iliac bifurcation device due to insufficient common iliac landing zone on either side