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Active Bleeding in Acute Subarachnoid Hemorrhage Observed by Multiphase Dynamic-Enhanced CT.
MedLine Citation:
PMID:  22383241     Owner:  NLM     Status:  Publisher    
BACKGROUND AND PURPOSE:Acute SAH is reportedly associated with rebleeding from aneurysms, and recent advances in imaging technology allow us to visualize active bleeding in SAH cases. This study aimed to retrospectively investigate the incidence and characteristics of active bleeding in patients with spontaneous SAH by using multiphase dynamic-enhanced CT.MATERIALS AND METHODS:We retrospectively surveyed a series of patients with SAH who underwent CTP with 18-phase dynamic enhancement and confirmed the presence of extravasated contrast medium in the source image. We compared clinical features between 2 groups of patients with and without extravasation.RESULTS:Active bleeding was observed with increasing enhancement in 25.5% (13/51) of patients. All patients with extravasation were in Claassen grade 3 or 4 and WFNS grades 3, 4, or 5. The other group without extravasation included patients in all grades. A significant difference was observed in Claassen grade, WFNS grade, and increase of hematomas in follow-up CT (P < .05, for each) between the 2 groups. All CTP results of patients with extravasation were obtained within 2 hours of the onset of symptoms of SAH (P < .05). There was no significant difference in mortality at 14 days between the 2 groups (P = .128).CONCLUSIONS:A high incidence of active bleeding (25.5%) was detected by multiphase dynamic-enhanced CT in patients with acute SAH. These results indicate that an awareness of active bleeding in patients with SAH has the potential to affect the treatment strategy.
K Suzuki; N Tanaka; S Morita; H Machida; E Ueno; H Kasuya
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-1
Journal Detail:
Title:  AJNR. American journal of neuroradiology     Volume:  -     ISSN:  1936-959X     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8003708     Medline TA:  AJNR Am J Neuroradiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Departments of Radiology and Neurosurgery, Tokyo Women's Medical University Medical Center East, Tokyo, Japan; and Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan.
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