title: Risk factors related to aneurysmal rebleeding.
abstract: OBJECTIVE
  Rebleeding from ruptured intracranial aneurysms is a major cause of death and disability. The aim of this study was to investigate the incidence of rebleeding and the risk factors related to rebleeding before early aneurysm repair.
  
  
  METHODS
  The incidence of rebleeding, demographic data, and clinical data from 326 patients with aneurysmal subarachnoid hemorrhage (SAH) were retrospectively collected. All clinical variables were examined by univariate analysis, and a binary logistic regression analysis was performed to identify the risk factors related to rebleeding.
  
  
  RESULTS
  Rebleeding occurred in 70 (21.5%) of the 326 aneurysm patients during transfer or during the in-hospital stay (within 72 hours); 24 episodes (34.3%) occurred within 3 hours, and 44 episodes (62.9%) occurred within 6 hours after the initial SAH. Univariate analysis showed that there were significant differences between the rebleeding and nonrebleeding patients in terms of age, aneurysm size, systolic arterial blood pressure (SBP), Hunt-Hess grade and outcome at discharge. The binary logistic regression analysis revealed that age (odds ratio [OR] = 1.167), aneurysm size (OR = 1.624), SBP (OR = 3.338), and Hunt-Hess grade (OR = 2.512) were independent risk factors for aneurysmal rebleeding (for each P < 0.05).
  
  
  CONCLUSIONS
  The incidence of early aneurysmal rebleeding within hours after the initial SAH is high during transfer or during the in-hospital stay. Advanced age, an aneurysm size larger than 10 mm, SBP higher than 160 mmHg, and poor Hunt-Hess grade were independent risk factors for aneurysmal rebleeding. The importance of early aneurysm repair should be emphasized because aneurysmal rebleeding contributes to a poor outcome.
authors: Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University, Shanghai, China.
authors: Lie-Mei
authors: LM
authors: Guo
authors: Hong-Yu
authors: HY
authors: Zhou
authors: Ji-Wen
authors: JW
authors: Xu
authors: Yong
authors: Y
authors: Wang
authors: Yong-Ming
authors: YM
authors: Qiu
authors: Ji-Yao
authors: JY
authors: Jiang
mesh_terms: D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D001794:Blood Pressure; D057510:Endovascular Procedures; D005260:Female; D023261:Glasgow Outcome Scale; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000601:surgery*; D016015:Logistic Models; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures; D012008:Recurrence; D012189:Retrospective Studies; D012307:Risk Factors; D013345:Subarachnoid Hemorrhage / Q000601:surgery; D013525:Surgical Instruments; D014057:Tomography, X-Ray Computed