05), which yielded a fair discriminatory utility (concordance, 0.67). 05) and decreasing seal zone inner curve length (hazard ratio, 1.03 95% confidence interval, 1.01-1.06 P <. Independent predictors of post-EVAR complications included increasing proximal neck diameter (hazard ratio, 1.14 95% confidence interval, 1.03-1.27 P <. Demographic and medical comorbidities did not predict risk of complications, nor did proximal neck length or neck angle. Of 205 patients enrolled in the trial, 67 stent-related complications occurred in 36 patients (17.6%) at 5 years after EVAR. The cohort was also stratified by neck diameter for further comparison of complication rates. Predictive anatomic parameters were assessed by Cox regression models, and a final multivariate model was created to predict complications. Follow-up up to 5 years postoperatively was available, for which stent-related complications (defined as sac expansion, stent migration, and type Ia endoleak) were assessed. Anatomic parameters included measurements of the proximal aneurysm neck as well as seal zones modeled in preoperative computed tomography scans. The study included 205 patients originally enrolled in the Prospective Aneurysm Trial: High Angle Aorfix Bifurcated Stent Graft (PYTHAGORAS) trial, the largest study to date to enroll patients with aortic aneurysm neck angles >60 degrees. This study aimed to quantify the influence of proximal neck anatomy on contemporary outcomes in a cohort of abdominal aortic aneurysm patients with highly angulated aneurysm necks. With continual improvement in endograft technology, patients with challenging anatomy are increasingly able to undergo successful treatment with EVAR.

Many studies have found that preoperative aneurysm anatomy can determine the postoperative complication rates for endovascular aneurysm repair (EVAR).

Osirix user manual pdf free download