Risk Factors for Aneurysm Rebleeding

Inclusion Criteria: * Individual whose clinical course was clear enough to be traced back and whose conservative treatment duration was shorter than 6 weeks was included Exclusion Criteria: * Rebleeding patients with certain inducing factors such as: * severe emotional episode, * severe coughing, * constipation, * excessive activities, or * with coagulation disorder,or * with other intracranial vascular malformations,such as: * moyamoya disease, * arteriovenous malformation were excluded. * Also patients who rebled while angiography were excluded.