Predictors for Symptomatic Intracranial Hemorrhage After Endovascular Treatment of Acute Ischemic Stroke

BACKGROUND AND PURPOSE: Symptomatic intracranial hemorrhage (SICH) pose a major safety concern for endovascular treatment of acute ischemic stroke. This study aimed to evaluate the risk and related factors of SICH after endovascular treatment in a real-world practice. METHODS: Patients with stroke treated with stent-like retrievers for recanalizing a blocked artery in anterior circulation were enrolled from 21 stroke centers in China. Intracranial hemorrhage was classified as symptomatic and asymptomatic ones according to Heidelberg Bleeding Classification. Logistic regression was used to identify predictors for SICH. RESULTS: <0.001). On multivariate analysis, baseline neutrophil ratio >0.83 (odds ratio [OR], 2.07; 95% confidence interval [CI], 1.24-3.46), pretreatment Alberta Stroke Program Early Computed Tomography Score of <6 (OR, 2.27; 95% CI, 1.24-4.14), stroke of cardioembolism type (OR, 1.91; 95% CI, 1.13-3.25), poor collateral circulation (OR, 1.97; 95% CI, 1.16-3.36), delay from symptoms onset to groin puncture >270 minutes (OR, 1.70; 95% CI, 1.03-2.80), >3 passes with retriever (OR, 2.55; 95% CI, 1.40-4.65) were associated with SICH after endovascular treatment. CONCLUSIONS: Incidence of SICH after thrombectomy is higher in Asian patients with acute ischemic stroke. Cardioembolic stroke, poor collateral circulation, delayed endovascular treatment, multiple passes with stent retriever device, lower pretreatment Alberta Stroke Program Early Computed Tomography Score, higher baseline neutrophil ratio may increase the risk of SICH.