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Introduction: Recent randomized controlled trials demonstrated superiority of mechanical thrombectomy compared to medical therapy in acute basilar artery occlusions, however, little data is available to guide clinicians in functional prognosis and risk stratification., Patients and Methods: Data from the retrospectively established PC-SEARCH Thrombectomy registry, which included patients with basilar artery occlusion from eight sites from January 2015 to December 2021, was interrogated. Outcomes were dichotomized into 90-day favorable (mRS ⩽ 3) and unfavorable (mRS > 3). Multivariate logistic regression analysis was performed with respect to the outcome groups and were adjusted for potential confounding baseline characteristics., Results: Four-hundred-forty-four patients were included in this analysis. Mean age was 66 [SD 15], with 56% male, and comprised of 76% Caucasian. Patients presented with an initial median NIHSS of 18 and 199 patients (44.8%) achieved favorable 90-day functional outcomes. Independent predictors of favorable outcomes included younger age, pc-ASPECTS > 8 (OR 2.30 p  < 0.001), and TICI ⩾ 2b (OR 7.56 p  < 0.001). Unfavorable outcomes were associated with increasing number of passes (OR 1.29 p  = 0.004) and sICH (OR 4.19 p  = 0.015). IA-tPA was an independent risk factor for sICH (OR 7.15 p  = 0.002) without improving favorable functional outcomes., Conclusion and Discussion: PC-ASPECTS > 8, successful recanalization (TICI ⩾ 2b), first-pass recanalization, and younger age are independent predictors of favorable 90-day functional outcome in thrombectomy treated patients with acute basilar artery occlusion. Conversely, sICH were independent predictors of unfavorable outcomes. IA-tPA and unsuccessful recanalization are independently associated with sICH., Competing Interests: Declaration of conflicting interestThe author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: The authors listed do not have any conflicts of interest to disclose. The following payments are reported by the listed authors but do not conflict with this analysis. Dr. Mouhammad Jumaa has received general payments (<$1000) and academic funding from Chiesi USA, Genentech, Medtronic, and Stryker. Dr. Sami Al Kasab has received general payments (<$1000) from AstraZeneca Pharmaceuticals, MicroVention, and Stryker. Dr. Santiago Ortega Gutierrez has received general payments and academic funding from Medtronic, and Siemens Medical Solutions USA, Stryker. Dr. Ashutosh P Jadhav has received general payments (<$1000) and academic funding from Medtronic, Viz AI, and Medical Device Business Services, Inc. Dr. Toth Gabor has received general payments (<$1000) and academic funding from BioSense Webster, Medtronic, and Stryker. Dr. Thanh Nguyen has received academic funding from AtriCure.

Importance: Stroke-to-recanalization time is a strong predictor of outcomes in anterior circulation large-vessel occlusion (LVO). The authors aimed to evaluate functional outcomes in early (<6 h) vs. late (6-24 h) time windows for thrombectomy-treated basilar artery occlusions. Methods: Patients were derived from the Posterior Circulation Ischemic Stroke Evaluation: Analyzing Radiographic and Intra-procedural Predictors of Mechanical Thrombectomy (PC-SEARCH) Registry and retrospectively analyzed early and late basilar artery thrombectomy time windows cohorts. Patients were dichotomized based on the last known well and correlated to 90-day functional outcomes (mRS 0-3). A multiple logistic regression analysis was performed. Results: A total of 405 patients were included in this study: 216 and 189 patients in the early and late time windows, respectively. Baseline demographic, stroke, radiographic, and intraprocedural characteristics were similar between the groups. A total of 99 (46%) and 79 (42%) patients in the early and late time windows, respectively, achieved favorable functional outcomes at 90 days (p = 0.41), and multiple logistic regression analysis did not reveal differences between cohorts (OR: 0.74; 95% CI: 0.46-1.19; p = 0.22). Symptomatic hemorrhage (7% vs. 5%; p = 0.69) and neurological complications (8% vs. 9%; p = 0.83) were similar between the groups; however, hospital complications were more common in the early time window cohort (22% vs. 13%; p = 0.01). Conclusion: The early and late thrombectomy time windows can achieve similar rates of 90-day favorable functional outcomes. However, timely thrombectomy influences the likelihood of achieving excellent functional outcomes (mRS = 2) within the early time window. [ABSTRACT FROM AUTHOR]

Age is often used as a predictor in determining outcomes in large vessel occlusions treated with mechanical thrombectomy. However, limited data exist for octo/nonagenarian outcomes compared to younger individuals in acute basilar artery occlusions treated with thrombectomy.Patient data were obtained from the PC-SEARCH Thrombectomy Registry which consists of 444 acute basilar artery occlusions treated with mechanical thrombectomy. Individuals were dichotomized based on age (>80 and ≤80 years old). Primary outcome was defined as modified Rankin Scale of 0–3 at 90 days. Logistic and multivariate regression, as well as control-matched analysis, were performed.There were 373 and 71 patients in the younger and older cohorts, respectively. Gender, ethnicity, smoking status, atrial fibrillation, and coronary artery disease were noted to be significantly different between cohorts. At 90 days, 178 (47.7%) and 23 (32.4%) patients achieved primary outcome at 90 days (p = 0.02), however, after controlling for potentially confounding factors this association lost significance (OR 0.50 95% CI 0.24–1.05; p = 0.07). There were 84 patients included in the control matched analysis and demonstrated no significant differences on multivariate analysis between cohorts (OR 0.68 95% CI 0.25–1.84; p = 0.45).Octa/nonagenarians presenting with an acute basilar artery occlusion treated with mechanical thrombectomy can achieve acceptable rates of favorable functional outcomes compared to younger individuals with similar baseline demographic and stroke characteristics. [ABSTRACT FROM AUTHOR]