Journal of Pediatric Epilepsy 
DOI: 10.1055/s-0044-1788052
   
   
         Runi Tanna
         1
                
               Department of Pediatrics, University of California, San Francisco, San Francisco,
            California, United States
         2
                
               Department of Neurology, University of California, San Francisco, San Francisco, California,
            United States
         , 
         Edilberto Amorim
         2
                
               Department of Neurology, University of California, San Francisco, San Francisco, California,
            United States
         , 
         
         1
                
               Department of Pediatrics, University of California, San Francisco, San Francisco,
            California, United States
         2
                
               Department of Neurology, University of California, San Francisco, San Francisco, California,
            United States
         › Author AffiliationsFunding M.C. and E.A. received joint funding from the University of California, San Francisco
   Catalyst Program. E.A. is a principal investigator in several active grants supported
   by the NIH (1K23NS119794), the Department of Defense (EP220036), American Heart Association
   (20CDA35310297 and Harold Amos Medical Faculty Development Award), Cures Within Reach,
   and the Zoll Foundation.
   
         › Further InformationAlso available at
   
    
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      Abstract
      
      
         Significance Recognition of intracranial hemorrhage is challenging in children who require deep
         sedation to tolerate mechanical ventilation. The Correlate Of Injury to the Nervous
         System (COIN) index may enable real-time recognition of intracranial hemorrhage at
         bedside.
      
      
         Methods Retrospective analysis of electroencephalography (EEG) data from children with spontaneous
         intracranial hemorrhage while intubated and sedated in the pediatric intensive care
         unit. Patients were selected for having normal head imaging at time of EEG start and
         required demonstration of hemorrhage on repeat imaging following an uninterrupted
         period of EEG recording. Power spectrum data were analyzed to yield a COIN value and
         visualization for every 4 seconds of recording. EEG recordings were subdivided based
         on COIN-risk alarm states (low, medium, or high). Changes in COIN were compared with
         changes in commercially available quantitative EEG trending software. COIN values
         for each subdivision were compared within cases using the Wilcoxon Rank-Sum Test.
      
      
         Results Two children developed spontaneous intracranial hemorrhage while intubated. COIN
         shows transitions from low-to-medium (p < 0.001) and medium-to-high-risk (p < 0.001 in both cases) alarm states. Discrete transitions in COIN alarm state preceded
         clinical recognition of hemorrhage by several hours. COIN visualized focal power attenuation
         concordant with hemorrhage localization. In both cases, qualitative EEG was not reported
         to have focal abnormalities during the medium-risk alarm state.
      
      
         Conclusion COIN may assist in real-time recognition of intracranial hemorrhage in children at
         bedside. Further study and development are required for clinical implementation of
         COIN in several clinical settings where patients are at high risk of new or worsening
         intracranial hemorrhage.
      
         Keywords
         quantitative EEG - 
         neuromonitoring - 
         intracranial hemorrhage - 
         pediatric neurocritical care
         Publication History
      
Received: 01 May 2024
Accepted: 14 June 2024
Article published online:
05 July 2024
      © 2024. Thieme. All rights reserved.
      Georg Thieme Verlag KG
Stuttgart · New York
      
    
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