Journal
CEREBROVASCULAR DISEASES
Volume 19, Issue 4, Pages 225-228Publisher
KARGER
DOI: 10.1159/000083887
Keywords
intra-arterial urokinase thrombolysis; cardioembolic stroke; acute ischemic stroke; National Institute of Health Stroke Scale score; modified Rankin scale score
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Background: Intra- arterial urokinase ( IA- UK) thrombolysis is frequently given in Japan to selected patients with acute cerebral artery occlusion. However, it is not clear whether or not IA- UK thrombolysis has an efficacy for acute stroke patients. The purpose of this study was to assess the effects of IA- UK thrombolysis in acute cardio-embolic stroke patients, by performing a case- control analysis using data from Japan's Multicenter Stroke Investigator's Collaboration ( J- MUSIC). Methods: 16,922 acute ischemic stroke patients were enrolled into J- MUSIC. From these patients, we selected 91 patients ( UK group) who met the following criteria: treatment with IA-UK; 20 - 75 years of age; cardioembolic stroke; presenting with a carotid stroke; admission within 4.5 h of symptom onset, and a National Institutes of Health Stroke Scale ( NIHSS) score of 5 - 22 points on admission. A control group of 182 patients without IA- UK treatment and matched to the NIHSS score, gender, and age was chosen. We compared the modified Rankin scale ( mRS) score at discharge and the mortality between the 2 groups. Results: In both groups, the mean age was 65 8 8 years, and the median NIHSS score was 14. The mean interval between symptom onset and UK administration was 3.4 +/- 1.3 h, and the IA- UK dose was 392,000 +/- 200,000 units. The mRS score at discharge was lower in the UK group than in the control group ( mean, SD, median; 2.8, 2.9, 2 in UK group vs. 3.3, 1.8, 4, in the control, respectively p = 0.031). A favorable outcome ( mRS of 0 - 2) was more frequently observed in the UK group ( 50.5%) than in the control group ( 34.1%, p = 0.0124). No difference in the mortality rate was seen between the UK group ( 11.0%) and the control group ( 13.3%). As well, there was no difference in the length of hospital stay between the UK group ( 46 8 41 days, mean 8 SD) and the control group ( 42 8 42 days, mean 8 SD). Conclusions: IA- UK thrombolytic therapy may improve the outcome in hyperacute cardioembolic stroke patients.
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