Abstract

BACKGROUND: Intravenous thrombolysis (IVT) has now become a standard treatment in eligible patients with acute ischemic stroke (AIS) who present within 4.5 h of symptom onset. OBJECTIVE: To determine the usefulness of IVT and the subset of patients who will benefit from IVT in AIS within 4.5 h. MATERIALS AND METHODS: Patients with AIS within 4.5 h of symptom onset who underwent IVT were studied prospectively. The study period was from October 2011 to October 2015. RESULTS: A total of 97 patients were thrombolysed intravenously. The mean onset to needle time in all patients was 177.2 +/- 62 min (range: 60-360). At 3 months follow-up, favorable outcome was seen in 65 patients (67.1%) and poor outcome including death in the remaining 32 patients (32.9%). Factors predicting favorable outcome was age <65 years (P = 0.02), the National Institute of Health Stroke Scale (NIHSS) <15 (P < 0.001), small vessel occlusion (P = 0.006), cardioembolism (P = 0.006), and random blood sugar (RBS) <250 mg/dl (P < 0.001). Factors predicting poor outcome was diabetes mellitus (P = 0.01), dyslipidemia (P = 0.01), NIHSS at admission >15 (P = 0.03), RBS >250 mg/dl (P = 0.01), Dense cerebral artery sign, age, glucose level on admission, onset-to-treatment time, NIHSS on admission score >5 (P = 0.03), and occlusion of large artery (P = 0.02). CONCLUSION: Milder baseline stroke severity, blood glucose <250 mg/dL, younger patients (<65 years), cardioembolic stroke, and small vessel occlusion benefit from recombinant tissue plasminogen activator.