Patients who survive after the initial hemorrhage are at risk for this deadly complication.[ 8 ] Prevention of rebleeding occurs by total isolation of the aneurysm from blood circulation either by open surgery or endovascular techniques.[ 3 10 ] The average annual mortality rate for SAH has shown a decreasing trend that is associated with new strategies such as early surgery within 72 hours after the onset of SAH.[ 16 ] Shiraz University of Medical Sciences is the principal referral center of neurosurgery, and the only referral center for cerebrovascular surgery in Southern Iran.
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