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NORMAL PRESSURE HYDROCEPHALUS (NPH) FOLLOWING SUBARACHNOID HEMORRHAGE (SAH) : CLINICAL CONSIDERATION OF CT AND DEVELOPMENT OF HYDROCEPHALUS AFTER SAH Katsuzo Fujita 1 , Tadaki Kusunoki 1 , Masaya Noda 1 , Akihiko Hirayama 1 , Norihiko Tamaki 1 , Satoshi Matsumoto 1 1Department of Neurosurgery, Kobe University, School of Medicine pp.845-851
Published Date 1981/8/1
DOI https://doi.org/10.11477/mf.1406204811
  • Abstract
  • Look Inside

CT scans were used to evaluate the development of the hydrocephalus, periventricular hypodensity (PVH) and the degree of the brain damage on 33 patients with the normal pressure hydrocephalus (NPH), following the subarachnoid hemorrhage (SAH), and the following conclusions can be drawn from our study.

1) NPH occurs in 33 cases out of 156 cases of subarachnoid hemorrhage (21%), and there was a relatively high incidence of normal pressure hydro-cephalus following rupture of the anterior com-municating artery aneurysm.

2) Factors causing NPH may be the arterial vasospasms and subarachnoid blood clot of the basal cistern verified by CT.

3) According to the repeated CT and lumbar tap after SAH, PVH, and, hydrocephalus usually be-come apparent around 7-10 days and most promi-nent around 3-4 weeks after SAH except for acute hydrocephalus appeared immediately after severe SAH.

4) The results were compared with CT findings and clinical response to shunting. The clinical improvements were achieved in cases (85%), inwhich CT showed PVH, small brain damage in the frontal lobe due to vasospasms or intracerebral hematoma, and no cortical atrophy.

5) Repeated CT can give better informations on the development of hydrocephalus in cases of SAH and can provide the indication for a shunt.


Copyright © 1981, 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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