The influence of statins on the results of intravenous thrombolysis for ischemic stroke is controversial. We studied the risks and benefits of statin pretreatment (SP) in patients treated with intravenous alteplase (t-PA) at our institution, and included our data to a meta-analysis of previous related studies. We reviewed prospectively collected data from consecutive patients with acute ischemic stroke treated with IV rt-PA at our institution over the past 9 years. We compared symptomatic intracranial haemorrhage (SICH), favourable short-term outcome (decrease of ≥4 points on the NIHSS score after 24 h from baseline assessment), favourable long-term outcome (mRS score ≤2 at 3 months) and mortality rates between statin-pretreated (SPP) and nonstatin-pretreated patients (NSPP). We performed a systematic search through MEDLINE/PubMed and Embase datasets to identify similar English language studies. A total of 182 patients were included (mean age 68.3 ± 11.4 years, 54.3% men). There were no significant differences between SPP and NSPP regarding SICH (3.3 vs. 1.7%, p = 0.47), favourable short-term outcome (44.8 vs 56%, p = 0.31) and favourable long-term outcome rates (40 vs 44.1%, p = 0.84). In a meta-analysis of 1,055 patients, SP was neither related to long-term functional outcome nor mortality, but it was a risk factor for SICH (OR 1.99, 95% CI 1.03-3.84, p = 0.04). Statin pretreatment may increase the risk of SICH in patients receiving IV t-PA for ischemic stroke, though it does not influence the 3 months outcome. Prospective studies are needed to confirm this safety concern.
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