Abstract
INTRODUCTION: Previous studies have shown that extracranial-intracranial (EC-IC) bypass surgery has no preventive effect of subsequent ipsilateral ischemic stroke in patients with symptomatic atherosclerotic internal carotid occlusion and hemodynamic cerebral ischemia. However, few studies have assessed whether an urgent EC-IC bypass surgery is an effective treatment for main trunk stenosis or occlusion in acute stage. METHODS: The authors retrospectively reviewed 58 consecutive patients who underwent urgent EC-IC bypass for symptomatic stenosis or occlusion at internal carotid artery or middle cerebral artery between January 2003 and December 2011. Clinical characteristics and neuroimagings were evaluated and analyzed. RESULTS: Based on preoperative angiogram, the responsible lesions were internal carotid artery in 19 (32.8%) patients and middle cerebral artery in 39 (67.2%). No hemorrhagic complication occurred. Sixty-nine percent of patients showed an improvement of neurological function after surgery and 74.1% of patients had favorable outcome. Unfavorable outcome was associated with insufficient collateral flow and new infarction after bypass surgery. CONCLUSION: Although EC-IC anastomosis for acute ischemic stroke is still debatable, it may be a good option for medication-resistance stenoocclusive disease.
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