Subarachnoid hemorrhage
What is subarachnoid ?
Aneurysms treated with clip
SAH, SAB, is an acute bleeding from large and medium arteries inside the skull but outside the brain (intracranial arteries). In addition to bleeding injuries can spasm (vasospasm) in arteries cause decreased blood flow to the brain, which can damage brain tissue (cerebral infarction). The condition can also cause a number of serious complications. Because of the imminent danger of rebleeding, the patient will need rapid neurosurgical treatment. About half of the survivors get but despite modern neurosurgical treatment.
SAB is most common in the age group over 65 years, but younger people can get the SAB. We assume that 2 to 2.5% in the adult population has had SAB. It is 300-400 cases per year, and the mortality rate is high, around 40%. SAH is the cause of 10% of all "stroke" and 25% of all deaths due cerebral circulatory damage.
How are long-term prospects?
SAB is a very acute and dangerous condition. Other Gangs bleeding, however, more dangerous than the first. Patients who undergo surgery and who have not had brain damage before the operation, has a very good prognosis. The bleeding can cause permanent brain damage. It may also cause epilepsy , and at worst, the disease is fatal. In a Norwegian study entered approx. half of those who survive, they have a good or very good quality of life.
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