Abstract
To clarify the pathophysiology of normal pressure hydrocephalus (NPH) after subarachnoid hemorrhage, the authors measured cerebral blood flow (CBF), cerebral oxygen metabolic rates (CMRO{sub 2}), the cerebral oxygen extraction fraction (OEF), and cerebral blood volume (CBV) in eight normal volunteers, six SAH patients with NPH, and seven patients without NPH by {sup 15}O-labeled gas and positron emission tomography (PET). In the NPH group, PET revealed a decrease in CBF in the lower regions of the cerebral cortex and a diffuse decrease in CMRO{sub 2}. The decrease in CBF in the lower frontal, temporal, and occipital cortices was significantly greater in the NPH than in the non-NPH group. Reduction of CMRO{sub 2} was also more extensive in the NPH group, and both CBF and CMRO{sub 2} were more markedly decreased in the lower frontal region. OEF was increased in all areas in both of the patient groups, but the increase was not significant in most areas. CBF, CMRO{sub 2} and OEF did not significantly differ between the non-NPH group and the normal volunteers. There was no significant difference in CBV among the three groups. These results indicate that NPH involves impairment of cerebral oxygen metabolism in the lower regions of the
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Ishikawa, Masatsune;
Kikuchi, Haruhiko;
Taki, Waro;
Kobayashi, Akira;
Nishizawa, Sadahiko;
Yonekura, Yoshiharu;
Konishi, Junji
[1]
- Kyoto Univ. (Japan). Faculty of Medicine
Citation Formats
Ishikawa, Masatsune, Kikuchi, Haruhiko, Taki, Waro, Kobayashi, Akira, Nishizawa, Sadahiko, Yonekura, Yoshiharu, and Konishi, Junji.
Regional cerebral blood flow and oxygen metabolism in normal pressure hydrocephalus after subarachnoid hemorrhage.
Japan: N. p.,
1989.
Web.
Ishikawa, Masatsune, Kikuchi, Haruhiko, Taki, Waro, Kobayashi, Akira, Nishizawa, Sadahiko, Yonekura, Yoshiharu, & Konishi, Junji.
Regional cerebral blood flow and oxygen metabolism in normal pressure hydrocephalus after subarachnoid hemorrhage.
Japan.
Ishikawa, Masatsune, Kikuchi, Haruhiko, Taki, Waro, Kobayashi, Akira, Nishizawa, Sadahiko, Yonekura, Yoshiharu, and Konishi, Junji.
1989.
"Regional cerebral blood flow and oxygen metabolism in normal pressure hydrocephalus after subarachnoid hemorrhage."
Japan.
@misc{etde_5516106,
title = {Regional cerebral blood flow and oxygen metabolism in normal pressure hydrocephalus after subarachnoid hemorrhage}
author = {Ishikawa, Masatsune, Kikuchi, Haruhiko, Taki, Waro, Kobayashi, Akira, Nishizawa, Sadahiko, Yonekura, Yoshiharu, and Konishi, Junji}
abstractNote = {To clarify the pathophysiology of normal pressure hydrocephalus (NPH) after subarachnoid hemorrhage, the authors measured cerebral blood flow (CBF), cerebral oxygen metabolic rates (CMRO{sub 2}), the cerebral oxygen extraction fraction (OEF), and cerebral blood volume (CBV) in eight normal volunteers, six SAH patients with NPH, and seven patients without NPH by {sup 15}O-labeled gas and positron emission tomography (PET). In the NPH group, PET revealed a decrease in CBF in the lower regions of the cerebral cortex and a diffuse decrease in CMRO{sub 2}. The decrease in CBF in the lower frontal, temporal, and occipital cortices was significantly greater in the NPH than in the non-NPH group. Reduction of CMRO{sub 2} was also more extensive in the NPH group, and both CBF and CMRO{sub 2} were more markedly decreased in the lower frontal region. OEF was increased in all areas in both of the patient groups, but the increase was not significant in most areas. CBF, CMRO{sub 2} and OEF did not significantly differ between the non-NPH group and the normal volunteers. There was no significant difference in CBV among the three groups. These results indicate that NPH involves impairment of cerebral oxygen metabolism in the lower regions of the cerebral cortex, particularly in the lower frontal region. (author).}
journal = []
volume = {29:5}
journal type = {AC}
place = {Japan}
year = {1989}
month = {May}
}
title = {Regional cerebral blood flow and oxygen metabolism in normal pressure hydrocephalus after subarachnoid hemorrhage}
author = {Ishikawa, Masatsune, Kikuchi, Haruhiko, Taki, Waro, Kobayashi, Akira, Nishizawa, Sadahiko, Yonekura, Yoshiharu, and Konishi, Junji}
abstractNote = {To clarify the pathophysiology of normal pressure hydrocephalus (NPH) after subarachnoid hemorrhage, the authors measured cerebral blood flow (CBF), cerebral oxygen metabolic rates (CMRO{sub 2}), the cerebral oxygen extraction fraction (OEF), and cerebral blood volume (CBV) in eight normal volunteers, six SAH patients with NPH, and seven patients without NPH by {sup 15}O-labeled gas and positron emission tomography (PET). In the NPH group, PET revealed a decrease in CBF in the lower regions of the cerebral cortex and a diffuse decrease in CMRO{sub 2}. The decrease in CBF in the lower frontal, temporal, and occipital cortices was significantly greater in the NPH than in the non-NPH group. Reduction of CMRO{sub 2} was also more extensive in the NPH group, and both CBF and CMRO{sub 2} were more markedly decreased in the lower frontal region. OEF was increased in all areas in both of the patient groups, but the increase was not significant in most areas. CBF, CMRO{sub 2} and OEF did not significantly differ between the non-NPH group and the normal volunteers. There was no significant difference in CBV among the three groups. These results indicate that NPH involves impairment of cerebral oxygen metabolism in the lower regions of the cerebral cortex, particularly in the lower frontal region. (author).}
journal = []
volume = {29:5}
journal type = {AC}
place = {Japan}
year = {1989}
month = {May}
}