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Japanese

CEREBRAL VASOSPASM FOLLOWING EXPERIMENTAL SUBARACHNOID HEMORRHAGE IN DOGS: AN ANGIOGRAPHIC STUDY Yoshiaki Suzuki 1 1Department of Neurosurgery, Nagoya University Medical School pp.169-179
Published Date 1973/2/1
DOI https://doi.org/10.11477/mf.1406203273
  • Abstract
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The posterior communicating artery was punc-tured with a fine sewing needle (0.33 mm in dia-meter) without arterial bleeding which was left in place, and the dura was tightly closed. Two or three days later when the influence of the opera-tion was supposed to disappear, the needle was removed to let blood come out into the subarachnoid space.

Repeated magnified dangiography revealed diffuse marked spasm of the cerebral basal arteries immedia-tely after the rupture of the posterior communica-ting artery. Within one to two hours, however, the caliber of the arteries returned almost to the original size. After the restoration, the arteries became spastic again.

Marked swelling of the brain was encountered in more than two thirds of the experimental group. The uptake ratio of RISA in the swelling brain was always higher than that in the case of blood infusion into the subarachnoid space through the cisterns magna or in the normal brain.

To rule out brain swelling and excess of blood in the subarachnoid space as a cause of spasm, the dura was reopened to allow the blood to escape. Vasoconstriction which was marked at 15 minutes became less severe after this procedure.


Copyright © 1973, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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