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Arquivos de Neuro-Psiquiatria
Article . 1988 . Peer-reviewed
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Arquivos de Neuro-Psiquiatria
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Arquivos de Neuro-Psiquiatria
Article . 1988
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Tratamento do acidente vascular cerebral agudo

Authors: Mohr, J. P.; Oliveira, V.;

Tratamento do acidente vascular cerebral agudo

Abstract

Avanços tecnológicos recentes beneficiaram o diagnóstico do acidente vascular cerebral (AVC), reduziram os riscos e aumentaram a freqüência de estudos acerca dos mecanismos do AVC. Projetos baseados em bancos de dados computadorizados trouxeram novas luzes quanto à freqüência de subtipos de AVC e aos riscos de sua progressão e recorrência. Elevada freqüência de AVC devidos a infarto continua sem explicação, apesar de exaustiva investigação laboratorial. Esses infartos de causa não determinada apresentam índices de recorrência quase tão elevados como no embolismo cardiogênico, forçando rápida decisão terapêutica, mesmo na ausência de causa demonstrada para eles. AVC devido a aterosclerose é menos comum do que se acreditava, mas traz consigo maior risco de piora e de recorrência precoce, obrigando a adoção de tratamento precoce na tentativa de evitar sua progressão. Os métodos Doppler duplex e transcraniano de imagem de vasos e fluxo tornaram possível atualmente seguir de modo não invasivo a evolução de estenose ateromatosa, embolismo e recanalização, desenvolvimento de circulação colateral e, ainda, ocorrência de vasospasmo em aneurismas rotos e malformações arteriovenosas. Doença ateromatosa extracraniana pode progredir rapidamente, passando a estenose de discreta a severa, podendo, no entanto, estabilizar-se em qualquer ponto da evolução. O grau de estenose extracraniana não permite pressupor aquele de circulação colateral intracraniana. Recanalização ocorre precocemente no embolismo cerebral. Vasospasmo após hemorragia sub-aracnóidea é comum e, por vezes, severo. Sempre que possível deve ser dada preferência à ressonância magnética, em lugar da tomografia computadorizada, para o diagnóstico de qualquer tipo de AVC. inclusive hemorrágico.

Related Organizations
Keywords

Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Green
gold