Rapid tranquillisation of violent or agitated patients in a psychiatric emergency setting
- 1 July 2004
- journal article
- clinical trial
- Published by Royal College of Psychiatrists in The British Journal of Psychiatry
- Vol. 185 (1), 63-69
- https://doi.org/10.1192/bjp.185.1.63
Abstract
Background The pharmacological management of violence in people with psychiatric disorders is under-researched. Aims To compare interventions commonly used for controlling agitation or violence in people with serious psychiatric disorders. Method We randomised 200 people to receive intramuscular lorazepam (4 mg) or intramuscular haloperidol (10 mg) plus promethazine (25–50 mg mix). Results At blinded assessments 4 h later (99.5% follow-up), equal numbers in both groups (96%) were tranquil or asleep. However, 76% given the haloperidol–promethazine mix were asleep compared with 45% of those allocated lorazepam (RR=2.29,95% CI 1.59–3.39; NNT=3.2,95% CI 2.3–5.4). The haloperidol–promethazine mix produced a faster onset of tranquillisation/sedation and more clinical improvement over the first 2 h. Neither intervention differed significantly in the need for additional intervention or physical restraints, numbers absconding, or adverse effects. Conclusions Both interventions are effective for controlling violent/agitated behaviour. If speed of sedation is required, the haloperidol–promethazine combination has advantages over lorazepam.Keywords
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