Abstract
The spontaneous Subarachnoid hemorrhage (SAH) represents up to 40% of the cerebral vascular accidents in lesser population of 45 years, with a tax of mortality of 3.5/100.000 and generates expenses of 1.7 billion dollars/year in the United States. The saccular aneurisms are responsible for 90% of the cases. The etiology, the mechanisms of development and the causes of rupture of the saccu…