Abstract
Introduction The management of wide‐necked bifurcation aneurysms can be challenging due to multiple factors. Intrasaccular flow disruption with the Woven EndoBridge (WEB) has demonstrated a safe and effective profile. Current microemboli data after the WEB device placement is non‐existent. We evaluated the rate of embolic signals (MES) after WEB device implantation. Methods We performed a retrospective analysis of a prospectively maintained database including patients who underwent WEB device implantation for the treatment of unruptured intracranial aneurysms between 2021 and 2022. Variables studied included patient demographics, modified Rankin Scale (mRS) before and 3 months post‐treatment, comorbidities, aneurysm characteristics, platelet inhibition tests, and activated clotting time. All patients were on aspirin and a P2Y12 inhibitor and had therapeutic levels on platelet aggregation assays. Intraoperative heparin was given in all cases to keep a therapeutic ACT. P2Y12 drugs were stopped after the procedure. In all patients, MES monitoring was performed in the immediate postoperative period and >12 hours after the procedure. Results 34 patients with 34 aneurysms were analyzed. Mean age was 67.4 years and 85% were females. Mean aneurysm size was 13.1 ± 2.0 mm and mean neck size 4.4 ± 1.5 mm. Locations were middle cerebral artery bifurcation and M1‐M2 segment (n = 13), basilar artery tip (n = 10), anterior communicating artery (n = 8), internal carotid artery terminus (n = 2) and pericallosal artery (n = 1). A single WEB was implanted in 100% of the cases. MES were negative in all cases. 3‐month mRS remained stable or improved in all cases. No procedure‐related complications were seen. Conclusions Our findings reinforce the safety profile of intrasaccular flow disruption. These findings differ from a previous analysis of unruptured aneurysms in our institution where a 7.7% incidence of MES was reported after endovascular treatment of unruptured aneurysms with primary or assisted coiling.
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