How to avoid and how to manage complications in aneurysm surgery

During the surgery for cerebral aneurysms there is chance for expecting some serious complications and it is important to expect such intraoperative complications which can be predicted preoperatively. It is also significant to consider how it can be avoided and dealt with at the time of the occurrence. The following are the risk factor of the intraoperative complications and how to manage such complication:1) Intraoperative rupture of cerebral aneurysms 2) Exact neck clipping without inducing arterial stenosis or residual aneurysms 3) Preservation of the perforating arteries 4) Preservation of the venous system and avoidance of brain compression and damage 5) Surgical procedures for acute phase of subarachnoid hemorrhage. This article describes measures taken to avoid complications occurring during cerebrovascular operation, particularly that for cerebral aneurysms, and incomplete operation and the know-how of the avoidance, with reference to our clinical cases.