This study states that The Ovation Abdominal Stent Graft Platform (Endologix, Irvine, Calif) contains a polymer-filled proximal sealing ring that conforms to the patient’s neck anatomy and is designed to improve proximal seal. We compared midterm outcomes for patients with and without hostile neck anatomy undergoing infrarenal endovascular aneurysm repair (EVAR) with the Ovation device. We used the Effectiveness of Custom Seal with Ovation: Review of the Evidence (ENCORE) registry, identifying elective infrarenal EVAR patients from six clinical trials and the European Post-Market Registry (2009-2017). Hostile neck anatomy was defined by presence of at least one of the following features: neck length <10 mm, reverse neck taper >10%, angulation >45 degrees, and large diameter >34 mm. We compared hostile vs nonhostile neck anatomy as well as individual hostile characteristics vs nonhostile anatomy. Primary outcome was 5-year rate of type IA endoleak; secondary outcomes were type I or type III endoleak, abdominal aortic aneurysm-related reinterventions, and overall survival. The 5-year rates were calculated using Kaplan-Meier estimates, and log-rank tests and Cox proportional hazards models were used to test univariate and risk-adjusted differences.
Reference link- https://www.jvascsurg.org/article/S0741-5214(20)31438-5/fulltext
