Impact of cone beam computed tomography in advanced endovascular aortic aneurysm repair using last generation 3D C-arm.

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to report the early outcomes of cone beam computed tomography (CBCT) using last generation 3D C-arm in patients undergone advanced endovascular aortic aneurysm repair (AdEVAR) and to identify risk factors that may predict any un-planned procedures.patients undergone AdEVAR between December 2017 and December 2018 were enrolled. Final CBCT was performed in all patients after digital subtraction angiography. Primary end points were the incidence of any positive findings and the following unplanned procedures intended as any endovascular manoeuvre performed to fix such technical defect. The secondary endpoints were comparison of outcomes between patients with positive findings undergone unplanned procedure (Group A) vs patients without findings (Group B).132 patients underwent endovascular treatment for aortic aneurysm. Of these, 22 (33%) fenestrated-branched endovascular aneurysm repairs (F-BEVAR), 21 (29%) EVAR with iliac branch devices, 19 (26%) abdominal and 10 (14%) thoracic EVAR were included in the study. Unplanned procedures after CBCT were necessary in 22 patients (31%). Patients in both groups were similar excepted for BMI > 25 kg/m2 (55% vs 26%), hostile iliac anatomy (64% vs 32%) and previous aortic treatment (73% vs 32%) (p<0.05). The odds ratios for unplanned procedure in case of previous aortic treatment was 6.76 (95% CI, 1.97-23.16; p = .002).The use of CBCT, especially in challenging scenarios, can reveal technical defects and may potentially limit the need for late reintervention. Patients undergone previous aortic surgery should be carefully evaluated and routine CBCT should be performed.

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Authors: Luca Mezzetto, Davide Mastrorilli, Giacomo Abatucci, Lorenzo Scorsone, Marco Macrì, Paolo Criscenti, Francesco Onorati, Stefano Gennai, Edoardo Veraldi, Gian Franco Veraldi