Abstract TP14: Predictors of Good Outcome after Endovascular Therapy for Acute Posterior Circulation Stroke

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Background and Purpose: Endovascular therapy (ET) is increasingly utilized in acute ischemic stroke treatment and is now considered the gold standard approach for select patient populations. Prior studies have demonstrated that eventual patient outcome depend on both patient specific factors as well as procedural considerations. However, these factors remain unclear for acute basilar artery occlusion stroke. We sought to determine prognostic factors of good outcome after ET for acute posterior circulation strokeMethods: We reviewed our prospectively collected endovascular databases at two tertiary care academic institutions for patients with acute posterior circulation strokes from September 2005 to September 2015. Baseline characteristics, procedural data and outcomes were evaluated. A good outcome was defined as a modified Rankin Scale score of 0 to 2 at 3 months. The association between clinical and procedural parameters and functional outcome was assessed.Results: A total of 214 qualified for the study. Smoking status, creatinine levels, baseline National Institutes of Health Stroke Scale score (NIHSS), anesthesia modality (conscious sedation vs general anesthesia), procedural length and reperfusion status were significantly associated with outcomes in the univariate analysis Multivariate logistic regression indicated that only smoking (odds ratio, 2.49; 95% confidence interval 1.16-5.36; P=0.019), low NIHSS (odds ratio, 0.92; 95% confidence interval 0.88-0.96; P<0.001), and successful reperfusion (mTICI 2b-3) (odds ratio, 13.65; 95% confidence interval 1.71-108.76; P=0.014), were independent predictors of good outcomes.Conclusion: Our study suggests that baseline NIHSS, smoking and reperfusion status are independent predictors of good outcomes after ET for acute posterior circulation stroke.

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