Abstract
Background and Purpose: Low-profile flow diverter stents (FDS) quite recently amended peripheral segments as targets for hemodynamic aneurysm treatment; however, reports on outcomes, especially later than 3 months, are scarce. This study therefore reports our experience with the novel silk vista baby (SVB) FDS and respective outcomes after 8 and 11 months with special respect to specific adverse events.Materials and Methods: Forty-four patients (mean age, 53 years) harboring 47 aneurysms treated with the SVB between June 2018 and December 2019 were included in our study. Clinical, procedural, and angiographic data were collected. Follow-ups were performed on average after 3, 8, and 11 months, respectively. Treatment effect was assessed using the O'Kelly Marotta (OKM) grading system.Results: Overall, angiographic follow-ups were available for 41 patients/45 aneurysms. Occlusion or significant reduction in aneurysmal perfusion (OKM: D1, B1–B3 and A2–A3) was observed in 98% of all aneurysms after 8 months. Only 2% of the treated aneurysms remained morphologically unaltered and without an apparent change in perfusion (OKM A1). Adverse events in the early post-interventional course occurred in seven patients; out of them, mRS-relevant morbidity at 90 days related to FDS treatment was observable in two patients. One death occurred in the context of severe SAH related to an acutely ruptured dissecting aneurysm of the vertebral artery.Conclusion: The SVB achieves sufficient occlusion rates of intracranial aneurysms originating from peripheral segments, which are comparable to prior established conventional FDS with acceptably low complication rates. However, alteration of a hemodynamic equilibrium in distal localizations requires special attention to prevent ischemic events.
Highlights
Endovascular treatment of intracranial aneurysms has experienced significant improvements in recent years [1]
Intermediate follow-up results from patients treated with the low-profile silk vista baby (SVB) flow diverter were available in 44 individuals (31 female and 13 male patients with a mean age of 52.6 years ranging from 18 years to 83 years) in our analysis
This study is the first report on intermediate follow-up results after aneurysm treatment with the Silk Vista Baby flow diverter
Summary
Endovascular treatment of intracranial aneurysms has experienced significant improvements in recent years [1]. Flow diverter stents (FDS) were indicated for aneurysms arising from the petrous to the clinoid segment of the internal carotid artery [4]. After this technique has been securely established and convincing outcomes in otherwise untreatable cases [5], flow diverters were used for smaller branches of the anterior intracranial and even the posterior circulation [6, 7]. Low-profile flow diverter stents (FDS) quite recently amended peripheral segments as targets for hemodynamic aneurysm treatment; reports on outcomes, especially later than 3 months, are scarce. This study reports our experience with the novel silk vista baby (SVB) FDS and respective outcomes after 8 and 11 months with special respect to specific adverse events
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