Reversible ischemia determined by xenon-enhanced CT after 90 minutes of complete basilar artery occlusion |
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Authors: | EI Levy AM Scarrow E Kanal G Rubin H Yonas L Kirby |
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Affiliation: | Department of Neurological Surgery, Presbyterian University Hospital, The University of Pittsburgh Medical Center, PA 15213, USA. |
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Abstract: | Intraarterial thrombolytic therapy decreases mortality in the treatment of acute basilar artery occlusion. An acute decrease in cerebral blood flow (CBF) (<12 mL/100 g per minute) has been reported to invariably result in infarction. We report a case of acute basilar artery occlusion, recanalized within 90 minutes, with reversal of CBF of less than 6 mL/100 g per minute. After reperfusion, areas with persistent CBF of 6 mL/100 g per minute resulted in infarctions on subsequent CT studies. Parenchymal viability is possible after 90 minutes of posterior CBF of 6 mL/100 g per minute. |
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