Treatment outcome of flow-diversion with Surpass Evolve stent for unruptured intracranial aneurysms: Predictors of poor occlusion
10.7461/jcen.2025.E2025.08.004
- Author:
Jiyeong KIM
1
;
Jai Ho CHOI
;
Yong Sam SHIN
;
Woo Cheul CHO
Author Information
1. Department of Neurosurgery, Seoul St. Mary’s Hospital, The Catholic University of Korea
- Publication Type:Clinical Article
- From:Journal of Cerebrovascular and Endovascular Neurosurgery
2026;28(1):24-34
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objective:We aimed to investigate the predictors of aneurysm occlusion following flow diversion treatment for unruptured intracranial aneurysms (UIA) using the Surpass Evolve (SE) stent.
Methods:The radiological and clinical outcomes of UIAs treated using SE stent at a single tertiary hospital were reviewed retrospectively. We categorized radiological outcome into the poor (O’Kelly-Marotta [OKM] grade A-B) and favorable occlusion group (OKM grade C-D). Univariate and multivariate analyses were conducted to identify risk factors associated with poor occlusion.
Results:A total of 68 unruptured intracranial aneurysms in 52 patients were treated in our institution from December 2019 to July 2024. At last radiological follow-up (mean 17.5±10.1 months), the overall favorable occlusion rate was 79.4% (n=52). Multivariate analysis showed larger aneurysm (p=0.011, OR=0.89, 95% CI [0.81-0.98]) and presence of incorporated branch (p=0.007, OR=8.26, 95% CI [1.78-38.28]) were associated with independent factors for poor occlusion, respectively. Procedural mortality and morbidity were 0% (n=0) and 1.9% (n=1). One patient presented with delayed ischemic stroke (1.9%, n=1) without permanent neurological deficit.
Conclusions:Treatment for UIAs using the Surpass Evolve flow-diverting stent might be feasible for efficacy and safety. In this study, larger size of aneurysm and branch incorporated aneurysm were associated with poor occlusion after flow-diversion using SE stent.
