Significant sac retraction after endovascular aneurysm repair is a robust indicator of durable treatment success

Journal of Vascular Surgery
Rabih HoubballahJean-Pierre Becquemin

Abstract

The principal aim of this study was to demonstrate that significant sac retraction (SSR) was a predictive marker of durable success after endovascular aortic repair (EVAR). If verified, follow-up (FU) of patients with SSR may become unnecessary. In addition, the clinical features of the patients and aneurysms were analyzed to identify predictive factors of SSR. A group of 371 patients treated by EVAR had a complete clinical exam, computed tomography (CT) scan, and duplex scan follow-up. Data were collected prospectively and analyzed retrospectively. We assessed the difference between the largest diameter of the aneurysm (D) and the diameter of the stent-graft body (D1) on each postoperative CT scan. SSR was defined as a minimum of 75% reduction of this difference between the first and any of the following CT scans. Treatment success was defined as survival free of aneurysm-related death, type I or III endoleak, aneurysm expansion exceeding 5 mm, rupture, surgical conversion, migration, and graft occlusion. To assess the predictive factors of SSR, we performed a multivariable analysis and a logistic regression of the most significant variables. SSR was observed in 24.8% (92/371) of the patients after an average of 26 ± 21 months...Continue Reading

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