The Presence of Gas in Aneurysm Sac during Early Postoperative Period Is Associated to the Type of Endograft and Perfused Lumen's Size

Annals of Vascular Surgery
Vasileios SaleptsisTilo Kölbel

Abstract

The aim of the present study was to examine the frequency of gas within the aneurysm sac following endovascular aneurysm repair (EVAR) on early postoperative computed tomography (CT) scans, to measure its volume, record the location, and analyze anatomical and procedural risk factors of its presence. A retrospective analysis of prospectively collected data of patients undergoing standard, fenestrated, or branched EVAR between January 2013 and December 2015 was undertaken. The presence, position, and size of gas in the postoperative computed tomography angiography (CTA) (within 10 days) was examined, classified as (1) gas near aortic wall; (2) between aortic wall and endograft; and (3) near endograft and further analyzed in terms of anatomical and procedural risk factors associated with its presence. From a total of 241 (85% males, 204/241 and 15% females, 37/241) patients who were treated with EVAR, CTA within 10 days was available in 211 patients with mean age of 73 ± 8.3 years. Gas was present on postoperative CT scan in 83 of 211 (39%) patients; 59/83 (71%) standard, 19/83 (23%) fenestrated, and 5/83 (6%) branched EVAR. The location of the gas was more frequently near the aortic wall (a) (46/83; 55.4%), with the mean gas vol...Continue Reading

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