• Mayra Montalvo, Eva Mistry, Andrew Davey Chang, Aleksandra Yakhkind, Katarina Dakay, Idrees Azher, Ashutosh Kaushal, Akshitkumar Mistry, Rohan Chitale, Shawna Cutting, Tina Burton, Mac Grory Brian B Neurology, Brown University Warren Alpert Medical School, Providence, Rhode Island, USA., Michael Reznik, Ali Mahta, Bradford B Thompson, Koto Ishida, Jennifer Frontera, Howard A Riina, David Gordon, David Parella, Erica Scher, Jeffrey Farkas, Ryan McTaggart, Pooja Khatri, Karen L Furie, Mahesh Jayaraman, and Shadi Yaghi.
• Neurology, Brown University Warren Alpert Medical School, Providence, Rhode Island, USA.
• J. Neurol. Neurosurg. Psychiatr. 2019 Dec 1; 90 (12): 1370-1374.

BackgroundThere is limited data on predictors of symptomatic intracranial haemorrhage (sICH) in patients who underwent mechanical thrombectomy. In this study, we aim to determine those predictors with external validation.MethodsWe evaluated mechanical thrombectomy in a derivation cohort of patients at a comprehensive stroke centre over a 30-month period. Clinical and radiographic data on these patients were obtained from the prospective quality improvement database. sICH was defined using the European Cooperative Acute Stroke Study III. We compared clinical and radiographic characteristics between patients with and without sICH using χ2 and t tests to identify independent predictors of sICH with p<0.1. Significant variables were then combined in a multivariate logistic regression model to derive an sICH prediction score. This score was then validated using data from the Blood Pressure After Endovascular Treatment multicentre prospective registry.ResultsWe identified 578 patients with acute ischaemic stroke who received thrombectomy, 19 had sICH (3.3%). Predictive factors of sICH were: thrombolysis in cerebral ischaemia (TICI) score, Alberta stroke program early CT score (ASPECTS), and glucose level, and from these predictors, we derived the weighted TICI-ASPECTS-glucose (TAG) score, which was associated with sICH in the derivation (OR per unit increase 1.98, 95% CI 1.48 to 2.66, p<0.001, area under curve ((AUC)=0.79) and validation (OR per unit increase 1.48, 95% CI 1.22 to 1.79, p<0.001, AUC=0.69) cohorts.ConclusionHigh TAG scores are associated with sICH in patients receiving mechanical thrombectomy. Larger studies are needed to validate this scoring system and test strategies to reduce sICH risk and make thrombectomy safer in patients with elevated TAG scores.© Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.

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