What are the most serious complications associated with aneurysmal rupture?
The development of cerebral vasospasm, rebleeding from the aneurysm, swelling of the ventricles in the brain (hydrocephalus), and seizures may occur after rupture of an intracerebral aneurysm. Cerebral vasospasm after aneurysmal subarachnoid hemorrhage usually occur within the first 14 days of rupture and is a major cause of morbidity and mortality in survivors of the bleed. Its incidence has varied in different studies between approximately 20 to 80% of all patients with SAH and its occurrence is related to the amount of subarachnoid blood in the brain. Other complications including rebleeding from an aneurysm and hydrocephalus also contribute to the overall morbidity and mortality.