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Effect of Phenoxybenzamine on the Experimental Cerebral Vasospasm in Cats Jyoji HANDA 1 , Tsunemaro KOYAMA 1 , Shunichi YONEDA 1 , Masayuki MATSUDA 1 , Hajime HANDA 1 1Department of Neurosurgery, Kyoto University Medical School and Hospital Keyword: Cerebral aneurysm , Phonexybenzamine , Prostaglandins , Subarachnoid hemorrhage , Vasospasm pp.577-584
Published Date 1975/7/10
DOI https://doi.org/10.11477/mf.1436200329
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Effects of topical and intravenous administration of phenoxybenzamine (PBZ) on the experimental vasospasm were studied in cats. Cerebral vasospasm was produced by a topical application of blood, prostaglandin (PG) E2 or PGF2α to the exposed basilar artery.

Topical PBZ caused a significant dilatation of the basilar artery and the occurrence of vasospasm was completely prevented either with blood, PGE2 or PGF2α. Intravenous administration of PBZ in the dosage with which the pressor response to phenylephrine was completely blocked, or three times that dosage, failed to show any preventive effect on the vasospasm.


Copyright © 1975, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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