Effects of a medical emergency team on reduction of incidence of and mortality from unexpected cardiac arrests in hospital: preliminary studyBMJ 2002; 324 doi: https://doi.org/10.1136/bmj.324.7334.387 (Published 16 February 2002) Cite this as: BMJ 2002;324:387
- Michael D Buist (), director of intensive care unita,
- Gaye E Moore, research nursea,
- Stephen A Bernard, deputy director of intensive care unita,
- Bruce P Waxman, surgical programme directora,
- Jeremy N Anderson, associate professorb,
- Tuan V Nguyen, senior fellowc
- a Departments of Intensive Care and Surgery, Dandenong Hospital, Dandenong, VIC 3175, Australia
- b Monash University Institute of Public Health,
- c University of New South Wales Department of Anaesthetics, Emergency Medicine and Critical Care,
- Correspondence to: M Buist
Objectives: To determine whether earlier clinical intervention by a medical emergency team prompted by clinical instability in a patient could reduce the incidence of and mortality from unexpected cardiac arrest in hospital.
Design: A non-randomised, population based study before (1996) and after (1999) introduction of the medical emergency team.
Setting: 300 bed tertiary referral teaching hospital.
Participants: All patients admitted to the hospital in 1996 (n=19 317) and 1999 (n=22 847).
Interventions: Medical emergency team (two doctors and one senior intensive care nurse) attended clinically unstable patients immediately with resuscitation drugs, fluid, and equipment. Response activated by the bedside nurse or doctor according to predefined criteria.
Main outcome measures: Incidence and outcome of unexpected cardiac arrest.
Results: The incidence of unexpected cardiac arrest was 3.77 per 1000 hospital admissions (73 cases) in 1996 (before intervention) and 2.05 per 1000 admissions (47 cases) in 1999 (after intervention), with mortality being 77% (56 patients) and 55% (26 patients), respectively. After adjustment for case mix the intervention was associated with a 50% reduction in the incidence of unexpected cardiac arrest (odds ratio 0.50, 95% confidence interval 0.35 to 0.73).
Conclusions: In clinically unstable inpatients early intervention by a medical emergency team significantly reduces the incidence of and mortality from unexpected cardiac arrest in hospital.
What is already known on this topic
What is already known on this topic In most studies mortality from unexpected cardiac arrest in hospital exceeds 50%
Such events are usually preceded by signs of clinical deterioration in the hours before cardiac arrest
What this paper adds
What this paper adds Early intervention by a medical emergency team significantly reduced the incidence of and mortality from unexpected cardiac arrest in hospital
Funding Department of Human Services.
Competing interests None declared.