Ruptured Cerebral Aneurysms: An Update

A Cerebral aneurysm is an abnormal bulging outward of one of cerebral arteries and is common lesion in the adult population. Cerebral aneurysm occurs in 1~5% of people which translates to 10 million to 12 million persons in the United States [1, 2]Approximately 0.2 to 3 percent of people with an aneurysm suffer from rupture per year. Ruptured aneurysm is the leading cause of subarachnoid hemorrhage (SAH) in 85% of cases. SAH is a common devastating condition and the age-adjusted annual incidence of SAH 2.0 cases per 100 000 population in China[3]. SAH accounts for 5% of stroke, but the case fatality is as high as 45% and some patients have significant morbidity among survivors [1, 4] Rebleeding is the most imminent danger. The first treatment purpose is therefore complete occlusion of aneurysms and prevention of rebleeding.