Se describen cinco casos de asociación de vasoespasmo cerebral y malformación arteriovenosa intracraneal sangrante. En uno de los pacientes el vasoespasmo de las arterias nutricias de la malformación redujo transitoriamente el flujo a través de la lesión limitando el llenado del nidus y de las venas de drenaje que no eran visibles en el estudio angiográfico inicial. Se comentan la relativa rareza y los posibles mecanismos del vasoespasmo cerebral asociado a MAV sangrante.
Five cases of cerebral vasospasm associated with intraventricular or subarachnoid hemorrhage caused by a ruptured intracranial arteriovenous malformation are reported. In one patient cerebral vasospasm transiently reduced blood flow through the malformation, preventing angiographic visualization of the nidus and the draining veins. The rarity and possible mechanisms of cerebrovascular spasm following the rupture of AVMs are discussed.
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