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The incidence of spontaneous reperfusion was 77%in patients with cortical infarcts.The frequency of reperfusion increased rapidly from zero at the time of onset to 60%on day 7 after stroke,reaching a maximum on day 14,at which time 77%showed reperfusion.Marked clinical improvement was observed in patients with spontaneous reperfusion(P=.001),while no improvement occurred in patients without reperfusion.Reperfusion was not observed in subcortical infarcts.The rate of spontaneous reperfusion increases gradually with time and occurs within the first 2 weeks after stroke onset in approximately four of five patients with cortical infarcts.Spontaneous reperfusion seemed to improve clinical outcome. |
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