There is a consistent body of evidence which shows that patients who become acutely unwell on general hospital wards receive inadequate care due to delayed recognition and the institution of inappropriate therapy. Amongst the possible solutions, attention has focused on early recognition of deteriorating patients and the development of Medical Emergency and/or Critical Care Outreach teams. It is well established that abnormal physiology is associated with adverse clinical outcomes. For example, the majority of deaths, cardiac arrests and unplanned ICU admissions were preceded by documented abnormal physiology.