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  • Title: [Intracerebral and subarachnoid hemorrhages after administration of recombinant tissue plasminogen activator in a patient with acute ischemicstroke due to anterior cerebral artery dissection: a case report].
    Author: Ueyama K, Koyama S, Nakamura R.
    Journal: Brain Nerve; 2011 Jun; 63(6):605-10. PubMed ID: 21613663.
    Abstract:
    A 45-year-old man was admitted to our hospital for treatment of right hemiparesis. At admission, he was alert and well oriented. His verbal comprehension seemed good, but his speech was not fluent. He could not stand or walk owing to the right hemiparesis, which was severe in the lower extremity. Computed tomographic (CT) scans on admission showed no abnormality. Diffusion weighted magnetic resonance imaging performed after the CT showed a high-intensity lesion in the left cingulate gyrus. Magnetic resonance angiography (MRA) revealed occlusion and irregularity of the left A2 portion of the anterior cerebral artery (ACA). At 1 h 50 min after the onset of the hemiparesis, recombinant tissue plasminogen activator (rt-PA; 0.6 mg/kg) was administered intravenously. At 1 h after the administration of rt-PA, he became drowsy and his right hemiparesis deteriorated. CT scans performed again showed a hematoma in the left frontal lobe and subarachnoid hemorrhage in the anterior interhemispheric fissure. He was treated conservatively. MRA performed on the 18th day after admission showed recanalization of the left ACA and abnormal dilatation of the left A2 segment. The abnormal dilatation was also depicted by 3D-CT angiography (3D-CTA) performed on the 26th day after admission and even on the 33rd and 77th days. As seen in our case, the definite diagnosis of dissection confined to the ACA frequently needs serial angiographies; therefore, its diagnosis immediately after the onset is often difficult. Thrombolytic therapy by intravenous administration of rt-PA for cerebral infarction caused by dissection of the ACA may recanalize the occluded site and facilitate the progression of the dissection, resulting in intracerebral and/or subarachnoid hemorrhages. In patients with cerebral infarction due to ACA dissection, strict control of blood pressure and careful observation are necessary after thrombolytic therapy by rt-PA.
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