Abstract
The hemorheological changes following SAH were observed to resolve the cause of disturbance of microcirculation induced by vasospasm. Among the factors influencing upon the blood viscosity, (1) aggregation of red blood cell, (2) erythrocyte deformability, (3) platelet adhesiveness, and (4) blood coagulability were studied. All the factors observed showed a tendency to accelerate the blood viscosity following vasospasm in SAH. The use of several drugs showed the useful result to reduce this hyperviscosity condition. The therapeutical trial from the aspect of hemorheology might be one of the most important approach to improve the deteriorated cerebral microcirculation following vasospasm.
