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Early superficial temporal artery to middle cerebral artery bypass in acute ischemic stroke.
Clinical Neurology and Neurosurgery 2013 August
OBJECTIVE: To evaluate the effects and safety of superficial temporal artery-middle cerebral artery (STA-MCA) anastomosis in the early stage after an acute ischemic event and the improvement of present symptoms in patients with intracranial atherosclerotic occlusive disease with stroke/stroke in progress.
METHODS: From 2006 to 2010, 20 patients (15 males and five females) with atherosclerotic cerebrovascular disease were treated with an STA-MCA bypass. All of the patients presented with an acute ischemic stroke or stroke in progress despite maximal medical treatment. The patients underwent an STA-MCA bypass within 7 days from symptom onset. The clinical outcome and hemodynamic study of the 20 patients were preoperatively and postoperatively investigated. A pooled analysis was performed, and the results were compared with those obtained from other delayed STA-MCA bypass studies.
RESULTS: Among the 20 patients who underwent an early STA-MCA bypass, fourteen (70%) patients achieved a good functional outcome (mRS 0, n=3; mRS 1, n=9; mRS 2, n=2). Prior to surgery, the mean basal regional cerebral blood flow (rCBF) and cerebrovascular reserve capacity (CVR) in the symptomatic hemisphere were 37.3±4.3 ml/100 g/min and -1.68±2.9%. The mean basal rCBF and CVR had significantly increased postoperatively, and no reperfusion-induced hemorrhage had occurred. In the pooled analysis, no significant differences were observed in the clinical outcome (P=0.328) or in the incidence of postoperative complications (P=0.516) between patients who underwent an early STA-MCA bypass and in patients who underwent a delayed STA-MCA bypass in previous studies.
CONCLUSIONS: In this study, which consisted of 20 carefully selected patients with acute ischemic stroke, an early STA-MCA bypass was safely and effectively performed, and in some cases, an early STA-MCA bypass resulted in rapid neurological improvement. An early STA-MCA bypass was beneficial in select patients who had acute ischemic stroke with imaging evidence of a small infarction.
METHODS: From 2006 to 2010, 20 patients (15 males and five females) with atherosclerotic cerebrovascular disease were treated with an STA-MCA bypass. All of the patients presented with an acute ischemic stroke or stroke in progress despite maximal medical treatment. The patients underwent an STA-MCA bypass within 7 days from symptom onset. The clinical outcome and hemodynamic study of the 20 patients were preoperatively and postoperatively investigated. A pooled analysis was performed, and the results were compared with those obtained from other delayed STA-MCA bypass studies.
RESULTS: Among the 20 patients who underwent an early STA-MCA bypass, fourteen (70%) patients achieved a good functional outcome (mRS 0, n=3; mRS 1, n=9; mRS 2, n=2). Prior to surgery, the mean basal regional cerebral blood flow (rCBF) and cerebrovascular reserve capacity (CVR) in the symptomatic hemisphere were 37.3±4.3 ml/100 g/min and -1.68±2.9%. The mean basal rCBF and CVR had significantly increased postoperatively, and no reperfusion-induced hemorrhage had occurred. In the pooled analysis, no significant differences were observed in the clinical outcome (P=0.328) or in the incidence of postoperative complications (P=0.516) between patients who underwent an early STA-MCA bypass and in patients who underwent a delayed STA-MCA bypass in previous studies.
CONCLUSIONS: In this study, which consisted of 20 carefully selected patients with acute ischemic stroke, an early STA-MCA bypass was safely and effectively performed, and in some cases, an early STA-MCA bypass resulted in rapid neurological improvement. An early STA-MCA bypass was beneficial in select patients who had acute ischemic stroke with imaging evidence of a small infarction.
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