ABSTRACT
Aim To develop a modified model of subarachnoid hemorrhage in rats. Motheds The SAH model was induced by injecting autologous blood into the cisterna magna without exposing the occipitoaxial ligament.The main modified point was a hole bored by a dental drill at the middle point of the boundary between the parietal bone and the occipital bone,then a catheter was inserted 8 mm to cisterna magna and the autologous blood was injected . Hemorrheological parameters were measured after the model was created.The intrinsic oversxidase method was used to show the microvessel of CA_1 region. The diameter, density ,and the aera of microvessel were measured and ananlyzed by Image-Pro Plus image analysis system. Results The total blood viscosity(?b) and erythroagglutation index(AL) in SAH model group increased significantly,however,the microvesse area and microvesse density in SAH model group decreased obviously. Conclusion The modified model of subarachnoid hemorrhage in rats is reliable and easy to operate on.