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Revisiting normal perfusion pressure breakthrough in light of hemorrhage-induced vasospasm 被引量:4
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作者 Matthew D Alexander e sander connolly Philip M Meyers 《World Journal of Radiology》 CAS 2010年第6期230-232,共3页
Cerebral arteriovenous malformations(AVMs) have abnormally enlarged arteries and veins prone to spontaneous hemorrhage.Immediately following surgical excision of a cerebral AVM,even normal brain tissue surrounding the... Cerebral arteriovenous malformations(AVMs) have abnormally enlarged arteries and veins prone to spontaneous hemorrhage.Immediately following surgical excision of a cerebral AVM,even normal brain tissue surrounding the lesion is subject to hemorrhage,a phenomenon termed normal perfusion pressure breakthrough(NPPB) syndrome.According to this theory,arteries supplying cerebral AVMs become dilated and lose their capacity to dilate or constrict to autoregulate pressure.Acutely after removal of a cerebral AVM,excessive blood pressure in these arterial feeders can cause normal brain tissue to bleed.However,this theory remains controversial.We present a patient with a cerebral AVM that demonstrated cerebrovascular reactivity and argues against an assumption underlying the theory of NPPB syndrome. 展开更多
关键词 ARTERIOVENOUS MALFORMATION AUTOREGULATION Normal perfusion pressure breakthrough SUBARACHNOID HEMORRHAGE VASOSPASM
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