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British Journal of Anaesthesia, 2004, Vol. 92, No. 6 882-884
© 2004 The Board of Management and Trustees of the British Journal of Anaesthesia

Short Communications

Physiological abnormalities in early warning scores are related to mortality in adult inpatients{dagger}

D. R. Goldhill* and A. F. McNarry

The Anaesthetics Unit, The Royal London Hospital, London E1 1BB, UK

*Corresponding author. Anaesthesia and Critical Care, The Royal National Orthopaedic Hospital Trust, Brockely Hill, Stanmore, Middlesex, HA7 4LP, UK. E-mail: david.goldhill@rnoh.nhs.uk
{dagger}This article is accompanied by Editorial II. Presented to the Anaesthetic Research Society in Glasgow, April 2003.

Background. Early warning scores using physiological measurements may help identify ward patients who are, or who may become, critically ill. We studied the value of abnormal physiology scores to identify high-risk hospital patients.

Methods. On a single day we recorded the following data from 433 adult non-obstetric inpatients: respiratory rate, heart rate, systolic pressure, temperature, oxygen saturation, level of consciousness, urine output for catheterized patients, age and inspired oxygen. We also noted the care required and given.

Results. Twenty-six patients (6%) died within 30 days. They were significantly older than survivors (P<0.001). Their median hospital stay was 26 days (interquartile range 16–39). Mortality increased with the number of physiological abnormalities (P<0.001), being 0.7% with no abnormalities, 4.4% with one, 9.2% with two and 21.3% with three or more. Patients receiving a lower level of care than desirable also had an increased mortality (P<0.01). Logistic regression modelling identified level of consciousness, heart rate, age, systolic pressure and respiratory rate as important variables in predicting outcome.

Conclusions. Simple physiological observations identify high-risk hospital inpatients. Those who die are often inpatients for days or weeks before death, allowing time for clinicians to intervene and potentially change outcome. Access to critical care beds could decrease mortality.

Br J Anaesth 2004; 92: 882–4


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