['The differences in implantable pressure sensor aneurysm sac readings were compared following endovascular aneurysm repair (EVAR) among three different stent grafts.', 'From January 2006 to March 2009, 51 aortic stent grafts were implanted along with the Endosure sensor. Grafts used were Zenith, Talent, and Excluder. In the present retrospective study, pulse ratios were measured intraoperatively before and after aneurysm sac exclusion and in follow-up (within 30\xa0days). Analysis of variance was used to determine significance.', 'The average aneurysm size that was repaired was 5.75\xa0cm (range: 4-8.5\xa0cm); 41 patients (80.4%) being male with an average age of 76.3\xa0years (range: 58-90\xa0years). Thirty-four grafts were Zenith, 9 were Talent, and 8 were Excluder. The average pre-aneurysm exclusion pulse ratios for the Zenith, Talent, and Excluder were 1.00, 1.08, and 0.95 (p\xa0=\xa00.18), respectively. The average post-aneurysm exclusion pulse ratios were 0.34, 0.67, and 0.35, respectively (p\xa0=\xa00.003). Pulse ratios at the time of follow-up (within 30\xa0days) were 0.17, 0.22, and 0.11, respectively (p\xa0=\xa00.44). Nine of 51 (17.6%) patients had a reduction of pulse ratio of less than 30% after endograft implantation. Five of those 9 patients (55.5%) had the Talent endograft, although there was no angiographic evidence of endoleak.'] Does significance of initial aortic aneurysm pressure sensor readings vary with aortic endograft design?