Middle Cerebral Artery Thrombolysis Through the Contralateral Internal Carotid Artery-Case Report-
A 63-year-old male presented with sudden onset of right hemiplegia and global aphasia. On admission he was stuporous. Computed tomography (CT) revealed no abnormalities except for right intraventricular meningioma found incidentally. Emergency angiography confirmed complete occlusion of the left internal carotid artery (ICA) and left M1 trunk whereas the left ICA bifurcation remained patent. The ipsilateral ICA was permanently occluded with two detachable balloons to prevent thrombus migration into the distal ICA and middle cerebral artery (MCA), followed by thrombolysis of the clot in the ipsilateral M1 through the contralateral ICA with urokinase (total dose 420,000 U) under systemic heparinization. Partial recanalization of the ipsilateral MCA was accomplished. The time interval from onset to recanalization was about 3 hours. Postoperative CT showed no hemorrhagic transformation. Slight right paresis and mild motor aphasia persisted 2 months later and he was transferred to a rehabilitation facility. Thrombolysis of the MCA embolism can be performed through the contralateral ICA in the presence of ipsilateral ICA occlusion.
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