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  • Title: Revascularization of cerebral ischemia after previous bilateral extracranial-intracranial bypass procedures.
    Author: Sottiurai VS, Herbert L, Hatter D.
    Journal: J Vasc Surg; 1997 Jul; 26(1):160-3. PubMed ID: 9240338.
    Abstract:
    Extracranial-intracranial (EC-IC) bypass grafting procedures were specially designed for treatment of bilateral internal carotid artery occlusion. When performed in an expeditious manner, EC-IC bypass procedures have produced effective and durable results, despite the recent disfavor given to this procedure. This communication reports a 68-year-old white man who developed generalized cerebral ischemia manifested as confusion, incoherence, disorientation, ataxia, and numerous episodes of syncope daily. A cerebral angiogram revealed bilateral external carotid arteries and left solitary vertebral artery critical stenosis. Transcranial Doppler study demonstrated reduction of cerebral and vertebral-basilar perfusion. However, the patient's EC-IC bypass graft had remained patent since 1985. The patient's recurrent symptoms of global ischemia and syncope resolved after carotid endarterectomy, vein patch external carotid artery, and vertebral-to-common carotid artery transposition. This report reiterates the value of the EC-IC bypass procedure and presents the surgical management of symptomatic external carotid and vertebral artery stenosis in patients after EC-IC bypass procedures.
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