If occlusion is not tolerated, it is necessary to perform EC-IC bypass prior to carotid sacrifice. On occasion, the situation may mandate the use of a vein graft, which is harvested from elsewhere, usually the leg, as in coronary bypass surgery. Back to Top Brain Hemorrhage Brain Parenchyma Hypertension Hemorrhage , or bleeding inside the cranium is frequently devastating and often fatal. The most common cause of bleeding into the brain substance, or parenchyma , is uncontrolled hypertension . Blood pressures in excess of 200 are usually seen, and usually the patient is unable to move one side of the body.
Treatment is directed best at prevention.
Unfortunately, such surgery cannot reverse the damage that has already been done, and severe deficits, such as paralysis on one side, likely will persist. Figure 3 a. Postoperative CT scan showing removal of the hematoma Back to Top Vascular Malformations Bleeding into the brain substance may also be caused by malformed blood vessels , called vascular malformations. Surgery for removal of an AVM is often performed in conjunction with embolization to reduce the blood inflow. Embolization is performed at CNI by the Interventional Radiology Service.