Cerebral hemodynamics in atherosclerotic discirculatory encephalopathy of different expressiveness

In 260 patients with cerebral circulatory insufficiency of different expressiveness the state of linear cerebral blood stream was determined by method of cerebral radiocirculography. For integral evaluation of the state of cerebral blood supply effectiveness ratio of linear blood flow in blood supply was calculated. Complete parallelism between clinical manifestations of cerebral artherosclerosis and expressiveness of disorders of cerebral blood flow has not been revealed. In patients with discirculatory encephalopathy of stage I blood flow by cerebral vessels is lowered when reducing cerebral blood supply. Blood flow is prevailing in the left hemisphere. In patients with discirculatory encephalopathy of stage II in cerebral blood supply “retrograde venous support” is revealed, allowing to maintain vascular blood supply at a relatively high level. Intersemispheric hemodynamic differences are being smoothed. Discirculatory encephalopathy of stage III is characterized by sharp worsening of cerebral hemodynamics. Supply level in the left cerebral hemisphere appears to be at a lower level, than in the right one. During further pathology development hemodynamic disorders achieve a critical level, beyond which vascular catastophe or death occurs.