Linda C. Santelices, MSE, Yajuan Wang, MS, Don Severyn, MS, Marek J

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Presentation transcript:

Development of a Hybrid Decision Support Model for Optimal Ventricular Assist Device Weaning Linda C. Santelices, MSE, Yajuan Wang, MS, Don Severyn, MS, Marek J. Druzdzel, PhD, Robert L. Kormos, MD, James F. Antaki, PhD The Annals of Thoracic Surgery Volume 90, Issue 3, Pages 713-720 (September 2010) DOI: 10.1016/j.athoracsur.2010.03.073 Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 Flowchart shows the knowledge-derived model for assessment of a patient's readiness for weaning from left ventricular assist device (VAD) support, based on expert interviews. (CI = cardiac index; ECHO = echocardiogram weaning study; EF = ejection fraction; HR = heart rate; LV = left ventricle; MVO2 = peak oxygen consumption; PCWP = pulmonary capillary wedge pressure; RER = respiratory exchange ratio; RH CATH = right heart catheterization; SA = stroke area.) The Annals of Thoracic Surgery 2010 90, 713-720DOI: (10.1016/j.athoracsur.2010.03.073) Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions

Fig 2 Simple example of the relationship between variables primary device (P[D]) and outcome (O) illustrating nodes, states, and probabilities. BiVAD = biventricular assist device; VAD = ventricular assist device) The Annals of Thoracic Surgery 2010 90, 713-720DOI: (10.1016/j.athoracsur.2010.03.073) Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions

Fig 3 Hybrid Bayesian belief network model combining expert and data models. (See the Abbreviations List for expansions of the abbreviations.) The Annals of Thoracic Surgery 2010 90, 713-720DOI: (10.1016/j.athoracsur.2010.03.073) Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions

Fig 4 Results of natural language processing (NLP) of shift notes. The Annals of Thoracic Surgery 2010 90, 713-720DOI: (10.1016/j.athoracsur.2010.03.073) Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions