Blood Flow in Left Internal Carotid Artery Trunk during Orthostatic Stress

Blood flow in the left internal carotid artery has been modeled in the present studies. Blood flow has been taken as Newtonian fluid. Flow parameters such as inflow velocity in the artery trunk, have been taken for graded lower body negative pressure, in order to reproduce orthostatic stress conditions. The change in left internal carotid artery blood flow across the different levels of LBNP is due to the level of LBNP during graded orthostatic stress. These findings provide the possibility that posterior cerebral blood flow decreases during severe orthostatic stress, and seems to be related with orthostatic pressure tolerance.