Objective To assess the impact of diabetes on neurological outcome and recanalization in acute ischemic stroke (AIS) after intravenous thrombolysis (IVT).
Methods Clinical data of 419 consecutive patients with AIS who received IVT between June 2009 and April 2014. Based on the medical history and new diagnosis, the patients were divided into groups with and without diabetes. Neurological outcomes at 24 h, 7 days and 3 months after IVT were evaluated. Favorable outcome was defined as National Institutes of Health Stroke Scale (NIHSS) score decrease ≥4 points from baseline or 0 at 24 h, NIHSS decrease ≥8 points or 0 at day 7, or modified Rankin scale ≤1 at 3 months after IVT. Recanalization on non-invasive imaging was evaluated in patients with large vessel occlusion (LVO) according to thrombolysis in myocardial infarction grades.
Results Among 419 patients, 98 (23.4%) had diabetes. Multivariable analyses showed that comorbidity of diabetes was an independent predictor of unfavorable outcome at 24 h (OR=0.534, 95% CI 0.316 to 0.903, p=0.019), at day 7 (OR=0.382, 95% CI 0.220 to 0.665, p=0.001), and at 3 months (OR=0.464, 95% CI 0.266 to 0.808, p=0.007). In patients with LVO, diabetes was an independent predictor of incomplete recanalization 24 h after IVT (OR=0.268, 95% CI 0.075 to 0.955, p=0.042).
Conclusions Diabetic patients with AIS had unfavorable neurological outcome, potentially linked to incomplete recanalization after IVT.
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