Cerebral Blood Flow in Dementia
1975/09/01 by V. C. Hachinski, Vladimir Hachinski, L. D. Iliff +9 · 36 citations
Medicine · Neuroscience · #Traumatic Brain Injury and Neurovascular Disturbances #Neurological Disease Mechanisms and Treatments #Optical Imaging and Spectroscopy Techniques
paper · doi:10.1001/archneur.1975.00490510088009
Abstract
Twenty-four patients of comparable age, blood pressure, and degree of dementia were classified by an "Ischemic Score" based on clinical features into "multi-infarct" and "primary degenerative" dementia. Regional cerebral blood flow (CBF) was measured by the intracarotid xenon 133 method. Both groups showed a decreased proportion of rapidly clearing brain tissue (largely gray matter). Cerebral blood flow per 100 gm brain per minute was normal in the primary degenerative group but low in the multi-infarct group. This suggests the blood flow is adequate for metabolic needs of the brain in patients with primary degenerative dementia but inadequate for those with multi-infarct dementia. There was no correlation between degree of dementia and CBF in the primary degenerative group but an inverse relationship existed in the multi-infarct group. Reactivity of blood vessels to reduction of arterial carbon dioxide pressure was normal in both groups.
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