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Mahesh Kate,Robert Wannamaker,Harsha Kamble,Parnian Riaz,Laura C. Gioia,Brian Buck,Thomas Jeerakathil,Penelope Smyth,Ashfaq Shuaib,Kenneth Butcher,Derek Emery 대한뇌졸중학회 2018 Journal of stroke Vol.20 No.1
Background and Purpose Thrombolysis >4.5 hours after ischemic stroke onset is unproven. We assessed the feasibility of tenecteplase (TNK) treatment in patients with evidence of an ischemic penumbra 4.5 to 24 hours after onset. Methods Acute ischemic stroke patients underwent perfusion computed tomography (CT)/ magnetic resonance imaging. Patients with cerebral blood volume (CBV) or diffusion weighted imaging Alberta Stroke Program Early CT Scores (ASPECTS) >6 and mismatch score >2 (defined as >2 ASPECTS regions with delay on mean transit time maps and normal CBV) were eligible for treatment with TNK (0.25 mg/kg). Patients with mismatch patterns enrolled in non-endovascular/ non-thrombolysis trials and those without mismatch patterns served as comparators. Results The median (interquartile range) baseline National Institutes of Health Stroke Scale (NIHSS) in TNK treated patients (n=16) was 12 (range, 8 to 15). In the untreated mismatch (n=18) and nonmismatch (n=23) groups, the baseline NIHSS was 12 (range, 7 to 12) and 16 (range, 8 to 20; P=0.09) respectively. There was one symptomatic hemorrhage each in the TNK group (parenchymal hematoma [PH] 2) and non-mismatch group (PH 2). Penumbral salvage volumes were higher in TNK treated patients (48.3 mL [range, 24.9 to 80.4]) than the non-mismatch (–90.8 mL [range, –197 to –20]; P<0.0001) patients. Conclusions This prospective, non-randomized study supports the feasibility of TNK therapy in patients with evidence of ischemic penumbra 4 to 24 hours after onset.