Propensity-Matched Comparison of Endovascular versus Open Reconstruction for TASC-II C/D AortoIliac Occlusive Disease. A Ten-Year Single-Center Experience with Self-Expanding Covered Stents

Abstract

To compare endovascular therapy (EVT) using kissing self-expanding covered stents, with open repair (OR) with aortobifemoral bypass (ABF), for reconstruction of the aortic bifurcation in Trans-Atlantic Inter-Society Consensus II (TASC-II) C/D aortoiliac occlusive disease (AIOD). A single-center retrospective analysis of patients treated by EVT or ABF for TASC-II C/D AIOD (2009-2018) was carried out. The perioperative risk was quantified by the Society for Vascular Surgery (SVS) and American Society of Anesthesiologists (ASA) scores. Outcomes of interest were early (30 days) mortality and complication rates, length of hospitalization, and midterm patency that were compared between EVT and OR after propensity score matching. Follow-up results were analyzed with Kaplan-Meier curves. Cox proportional hazards were used to identify predictors of patency. Sixty-three EVT and 55 OR patients were treated; the EVT group had higher perioperative risk (ASA score, P=0.012. SVS score, P=0.012) and less advanced disease (TASC D lesions, 52.3% vs. 72.7%; P=0.036. Iliac occlusion, 46.8% vs. 87.2%; P=0.024). After propensity score matching, 148 limbs were selected (74 EVT and 74 OR), resulting in well-balanced groups regarding risk (ASA score, P=0.514. SVS score, P=0.373) and anatomical complexity (TASC D lesions, 60.4% vs. 63.0%; P=0.516. Iliac occlusion, 47.3% vs. 59.5%; P=0.187). Mortality was 0%. The EVT group showed significantly shorter hospital (4.5±7.6days vs. 9.9±6.8days; P<0.001) and intensive care unit stay (0±0.1days vs. 1.7±1.5days; P=0.046) and less surgical complications (4% vs. 14.8%; P=0.046). Five-year primary patency was similar between EVT and OR (84.1% vs. 88.3%; P=0.454); multivariate analysis showed that Rutherford category was the only predictor of primary patency (HR 4.1, P=0.023). The endovascular kissing self-expanding covered stent technique for TASC-II C/D AIOD presented a primary patency equal to ABF at 5years, with the advantage of less surgical complications and shorter hospitalization. Therefore, it may be considered as a valid option for complex atherosclerotic lesions involving the aortic bifurcation.