23,000 preventable cardiac arrests occur every year in UK hospitals 20,000 readmissions into ICU every year – mortality 50% The majority of these occur because physiological deterioration goes undetected – why?
Level 3:ICU1 : 1 Level 2: Step-down1 : 4 Level 1: Acute wards1 : 4 Level 0: General wards1 : 10 Level -1: Home1 : ? Patient monitors generate very high numbers of false alerts (e.g. 86% of alerts)
Existing methods apply simple thresholds to each parameter Intolerant to transient noise Possibly not the appropriate domain (time, frequency) Where do we set these thresholds in a principled, reliable manner? Nurses & junior doctors trained to ignore alarms Rolls-Royce has deactivated conventional automated methods