Covered vs. Bare Metal Stents in the Reconstruction of the Aortic Bifurcation: Early and Midterm Outcomes from the COBRA European Multicentre Registry

To report outcomes following endovascular revascularisation for severe aorto-iliac occlusive disease (AIOD) using covered (CS) or bare metal (BMS) stent(s). This was a retrospective cohort study including patients who underwent treatment with CS BMS AIOD between November 2012 and March 2020 in 12 European centres. Outcome measures included death, freedom from target lesion (TLR), major amputation, adverse cardiac cerebrovascular events (MACCE). Overall, 252 (53% males; mean age 65 ± 10 years) were (102 150 aortic stent); 122 (48%) presented chronic limb threatening ischaemia (CLTI). Severe arterial calcification noted > 65% of patients, 70% Trans-Atlantic Societies Consensus (TASC) D lesions, 32% 46% had iliac total occlusion (CTO), respectively. Median follow up 17 months (range 6 – 40; none lost to up). inpatient stay two days four). During the first 30 days, died (both stents, because cardiovascular events), required TLR, (1%) amputation (all CLTI), three MACCE. At months, mortality (BMS 14% vs. 7%, hazard ratio [HR] 0.97, 95% confidence interval [CI] 0.42 2.26, p = .94, log rank test) TLR (11% 10%, HR 1.98, CI 0.89 4.43, .095) did not differ statistically significantly groups; only during late stent). In multivariable model, use an influence TLR. conditional Cox regression, however, concomitant CSs associated improved Endovascular reconstruction BMSs showed comparable midterm performance. The both seems be reduced