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      Automated Analysis and Annotation of Datasets from Patients with Severe Traumatic Brain Injury: an Initial Case Study

      proceedings-article

      , ,

      BCS Health Informatics Scotland (HIS)

      Health Informatics Scotland

      11 & 12 October 2016

      Traumatic Brain Injury, ICU, patient monitoring, Hypoxia, correlation, workbench, data analysis

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            Abstract

            Treatment protocols for patients who have suffered traumatic brain injury (TBI) specify that hypoxia should be avoided and specifically that brain oxygen tension (PbtO2) should be maintained above a particular level (20mmHg). Results from several specialized Neuro ICUs world-wide suggest that such guidelines are not achieved in at least 24% of patients (Shafi et al. 2014). Many physiological and therapeutic factors can influence PbtO2. Furthermore, clinical staff in ICUs have many calls on their time and may not be able to direct sufficient attention to the management of a single parameter in one of several patients. We believe that automated analysis of complex data sets could be a useful step to developing software capable of assisting in the better maintenance of PbtO2 in these complex patients. A “manual” analysis of 5 patients’ complete temporal records showed that certain distinct rules including a number of important descriptors (CPP, PbtO2, PaO2 & the correlation coefficient between CPP and PbtO2) with their values segmented into discrete ranges, cover 98.2% (SD 1.6) of the available dataset once the rules have been “fine-tuned”. This study was then validated in a second set of five patients, in which 92.5% (SD 12.5) of the data set was covered without additional “tuning” of the rules. Moreover, it was noted that these patterns, once some account was taken of noise, occur in “blocks”. As a result of these observations we developed a correlation module for the existing Temporal Discovery workbench to replicate the “manual” analysis. Using the dataset for the 10 patients, we have now obtained effectively perfect agreement between the manual analysis and that produced by the workbench. Subsequently, the expert provided clinical actions which correspond to each of the (48) patterns potentially created in this study, and so the correlation module is now able to produce for each time-point (and each time “block”) a pattern, and the correct clinical action. Further work includes enhancing how the correlation module deals with noise, evaluating the approach across a much larger dataset, and evaluating the effectiveness of the module’s recommendations in clinical settings.

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            Author and article information

            Contributors
            Conference
            October 2016
            October 2016
            : 1-7
            Affiliations
            [0001]Department of Computing Science University of Aberdeen
            [0002]Intensive Care Unit Western General Hospital Edinburgh EH4 2XU
            Article
            10.14236/ewic/HIS2016.2
            664e5a69-c0c2-4896-871c-00583582222d
            © The Authors. Published by BCSProceedings of BCS Health Informatics Scotland 2016 Conference.

            This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

            BCS Health Informatics Scotland
            HIS
            Glasgow, UK
            11 & 12 October 2016
            Electronic Workshops in Computing (eWiC)
            Health Informatics Scotland
            Product
            Product Information: 1477-9358BCS Learning & Development
            Self URI (journal page): https://ewic.bcs.org/
            Categories
            Electronic Workshops in Computing

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