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Decision analytic approach to severe head injury management
D Harmanec1, T Y Leong, S Sundaresh
1Medical Computing Laboratory, School of Computing, National University of Singapore, Singapore. davidh@comp.nus.edu.sg
Abstract:
Severe head injury management in the intensive care unit is extremely challenging due to the complex domain, the uncertain intervention efficacies, and the time-critical setting. We adopt a decision analytic approach to automate the management process. We document our experience in building a simplified influence diagram that involves about 3000 numerical parameters. We identify the inherent problems in structuring a model with unclear domain relationships, numerous interacting variables, and real-time multiple inputs. We analyze the effectiveness and limitations of the decision analytic approach and present a set of desiderata for effective knowledge acquisition in this setting. We also propose a semi-qualitative approach to parameter elicitation.