Objectives: To describe the patient demographic characteristics and organisational factors that influence length of stay (LOS) among emergency medical admissions. Also, to describe differences in investigation practice among consultant physicians and to examine the impact of these on LOS. Design: Prospective observational study. Setting: General medicine department of a teaching hospital in Belfast, UK. Participants: Data were recorded for patients who were admitted as emergencies and reviewed on the post-take ward rounds (PTWR) attended by the investigation coordinator. Outcome measures: Non-laboratory investigations requested, LOS, and diagnosis on discharge. Results: Of 830 episodes evaluated, the median LOS was 7 days (interquartile range 3-12 days); this was significantly longer for admissions on Fridays (p = 0.0011) and for patients managed on medical wards (p,0.0001). There was a positive correlation between patient age and LOS (r = 0.32, p,0.0001). Chest radiographs (p = 0.002) and echocardiography (p = 0.015) were associated with a prolonged LOS; no investigations were associated with a shortened LOS. Diagnoses of congestive heart failure, respiratory disease, and cancer were associated with a longer LOS; a diagnosis of angina was associated with a shorter LOS. Considerable variation in investigation ordering, but no difference in LOS, was observed between consultants. High use of a given medical test did not correlate with high use of other tests. Conclusion: A systematic means of dealing with the NHS resource crisis should include an improved organisational strategy as well as social care provision. A more unified approach to investigation practice should also have a sparing effect on resources. W hile several investigators have previously reported factors responsible for the increasing use of medical investigations in various settings, [1][2][3][4][5][6][7] as well as factors contributing to prolonged hospital inpatient episodes, there are few data describing the demographic characteristics, patterns of investigation, and length of stay (LOS) of patients admitted as emergencies to general medicine units in the UK. The principal objective of this study is to report these characteristics in a general medical department of a teaching hospital in Belfast, Northern Ireland. Furthermore, we aim to describe variations in the ordering of medical tests between general physicians and to identify correlations between the ordering of specific investigations and LOS. Moreover, we wished to determine, first, whether high use of a specific diagnostic procedure correlated with high use of other diagnostic procedures and, second, whether high use of such investigations influenced LOS.
PATIENTS AND METHODS
Data relating to emergency medical patients admitted toBelfast City Hospital between 1 June 2000 and 31 December 2000 were recorded. Belfast City Hospital, although a tertiary referral centre for various specialties, operates an alternate day acute general medical take-in serving as a secondary care centre for emerg...