Abstract
Introduction: The speed and completeness of endovascular reperfusion strongly correlate with functional outcomes. First-Pass Reperfusion (FPR) has been recently established as a critical procedural performance metric for mechanical thrombectomy (MT). We aimed to study the predictors of FPR and its effect on the outcome Methods: Review of a prospectively collected database of MT patients with large vessel occlusion strokes (LVOS) from 05/2012-11/2018. Patients were included in the analysis if they had an anterior circulation LVOS that was successfully reperfused (mTICI 2b-3). FPR was defined as the achievement of mTICI 2c-3 after a single pass with any thrombectomy device. Uni- and multivariate analyses were performed to identify the independent predictors of FPR. Results: A total of 563 patients qualified for the analysis (mean age, 64.4±12.3 years, baseline NIHSS 16.2). FPR was achieved in 202 (35.9%) patients. On univariate analysis, FPR was significantly associated with higher ASPECTS (8.1 vs. 7.8, p=0.008), higher usage of balloon guide catheters (BGC) (88.1% vs. 75.3%, p<0.001), lower use of general anesthesia (9.5% vs. 18.2%, p= 0.006), and shorter procedure duration (mean, 45.5 vs. 79.9 min, p <0.001 and 90.5%). Both BGC (OR, 2.26; 95%CI [1.32-3.87], p=0.003) and ASPECTS (OR, 1.15; 95% CI [1.03-1.28], p= 0.01) were independent predictors of FPE on multivariate regression analysis. Conclusion: Higher baseline ASPECTS score and the use of BGC are strong predictors of First-Pass Reperfusion in mechanical thrombectomy.
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