P.056 Basilar artery stenting in hyperacute stroke: a systematic review of published cases

Background: Basilar artery stenting is a rescue therapy in the management of hyperacute stroke Published data on efficacy and safety are limited. Methods: A systematic review of published studies was performed in accordance with PRISMA guidelines. Inclusion criteria were adult patients with ischemic stroke with permanent basilar artery stent placement within 48 hours of onset. Data were extracted by two independent reviewers. Additional cases from our institution were identified via a local stroke registry. Results: Of 212 screened articles, patient-level data was reported in 35 studies (93 individuals) and six additional patients were included from our registry. Patients (n=99, 63% male; median age 64) most often presented with mid-basilar occlusion (52%) and 76% received treatment within 12 hours of onset. Favorable angiographic results occurred in 67%. The final modified Rankin Scale score (mRS) was 0-3 for 56% of patients; mortality was 29%. Those with complete flow post-procedure were more likely to have a final mRS of 0-3 (p=0.05). Conclusions: In 99 cases of basilar stenting in hyperacute stroke, favourable angiographic and functional outcomes were reported in 67% and 56% of patients, respectively. International multicenter registries are required to establish benefit and identify patient and technical factors that predict favorable outcomes.