VITAL-SIGN DATA FUSION MODELS FOR POST-OPERATIVE PATIENTS
Marco A. F. Pimentel, David Andrew Clifton, Lei Clifton, Peter Watkinson, Lionel Tarassenko · 2012
Deterioration in Patients who undergo upper-gastrointestinal surgery may be evident in the vital signs prior to adverse events.A dataset comprising observational vital-sign data from 128 post-operative patients was used to explore the trajectory of patients vital-sign changes during their stay in the post-operative ward.A model of normality based on pre-discharge data from patients who had a "normal" recovery was constructed using kernel density estimates, and tested with "abnormal" data from patients who deteriorate sufficiently to be re-admitted to the Intensive Care Unit.The results suggest that the criticality of post-operative patients can be evaluated by assessment of the distributions of their vital signs after their admission to the post-operative ward.