Risk Factors for Early Intracerebral Hemorrhage after Intravenous Thrombolysis with Alteplase.

Aim: Intracerebral hemorrhage (ICH) is one of the most severe complications of thrombolysis. Symptomatic ICHs are associated with adverse outcomes. It has been reported that symptomatic ICHs most commonly occur within the first few hours after the initiation of intravenous thrombolysis. Our aim here was to determine the risk factors for early ICH (within 12 h) after thrombolysis.

Methods: We analyzed patients with acute ischemic stroke who received intravenous alteplase at two hospitals affiliated to Wenzhou Medical University between March 2008 and November 2017. The ICH diagnosis time was defined as the time from the intravenous administration of alteplase to the first detection of hemorrhage on computed tomography. Demographic data, medical history, clinical features, and laboratory examination results were collected. Univariate analysis followed by multivariable logistic regression analysis was performed to determine the predictors of early ICH (within 12 h) after thrombolysis.

Results: Among 197 patients, early ICH (within 12 h) after thrombolysis occurred in 13 patients (6.6%). In the univariate analysis, patients with early ICHs were significantly correlated with prior stroke (P=0.04). After adjusting for potential confounders in the multivariate analysis, prior stroke (odds ratio [OR]: 5.752, 95% confidence interval [CI]: 1.487-22.248; P=0.011) and atrial fibrillation (OR: 5.428, 95% CI: 1.427-20.640; P=0.013) were associated with early ICH.

Conclusions: Prior stroke and atrial fibrillation are independent risk factors for early ICHs (within 12 h) after intravenous thrombolysis with alteplase.