RESUMO
Since the negative results of the international extracranical-intracranial bypass surgery (EIBS), this procedure is rarely employed in the treatment of patients with ischemic stroke. However, recent evidence suggests that patients with hemodynamic cerebral ischemia (HCI) are at particular risk for subsequent stroke compared to those with similar occlusive lesion but intact cerebrovascular reserve (CVR). Furthermore, several investigators have suggested that EIBS is effective in preventing recurrent ischemic attacks in patients with HCI due to occlusive disease and insufficient collateral blood supply. In addition, EIBS has been frequently used for the patients with moyamoya disease and for the patients who need therapeutic occlusion or sacrifice of a parent vessel during the treatment of complex intra or extracranial aneurysms or cranial base tumors. Based on a review of literature the rationale and the indication of EIBS will be summaried.
