Psych · Emergency psychiatry
Acute agitation and rapid tranquillisation
Also known as Rapid tranquillisation · Rapid tranquilization · Acute agitation · Behavioural emergency · Severe behavioural disturbance · Chemical restraint · Emergency sedation psychiatry
Exam-exhaustive fellowship topic on acute agitation and rapid tranquillisation — de-escalation first, capacity and least-restrictive legal principles, oral-then-IM ladders with named doses (lorazepam, midazolam, promethazine, haloperidol, olanzapine, aripiprazole, droperidol), never IM olanzapine plus parenteral benzodiazepine, post-RT monitoring, TREC and Project BETA evidence, BAP/NAPICU principles, special populations. FRANZCP-primary, globally tagged.
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Red flags
- Fever, fluctuating attention, hypoxia, or hypoglycaemia with agitation — medical emergency first, not primary psychiatric RT
- IM olanzapine plus parenteral benzodiazepine — never co-administer; profound respiratory depression risk
- Extreme continuous agitation with hyperthermia or collapse risk — severe behavioural disturbance needing medical resuscitation capacity
- Prolonged prone restraint — positional asphyxia and sudden death risk
- Post-RT unrousable patient or falling SpO2 — treat as airway emergency, not 'settled'
- Akathisia misread as agitation leading to more antipsychotic — stop and treat the side effect
- QTc prolongation or high cardiac risk before high-dose butyrophenones without ECG review
Meet the patient
A 29-year-old man is brought to the emergency department by police after smashing windows and threatening his neighbours. He is pacing, fist-clenched, shouting that people are trying to kill him. He has not slept in four days. His obs: T 38.1, HR 124, BP 168/104, SpO2 98 percent, glucose 5.2. No one knows his medications.[4][18]
The nursing shift leader asks the only question that matters in the next ten minutes: is he safe to assess, and if not, what do you reach for? This whole topic is the disciplined answer to that question — the ladder, the doses, the one combination you never make, and the monitoring that stops a sedation becoming a cardiac arrest.[1][3]
References18ShowHide
- [1]Patel MX, Sethi FN, Barnes TR, et al. Joint BAP NAPICU evidence-based consensus guidelines for the clinical management of acute disturbance: De-escalation and rapid tranquillisation J Psychopharmacol, 2018.PMID 29882463
- [2]Richmond JS, Berlin JS, Fishkind AB, et al. Verbal De-escalation of the Agitated Patient: Consensus Statement of the American Association for Emergency Psychiatry Project BETA De-escalation Workgroup West J Emerg Med, 2012.PMID 22461917
- [3]Wilson MP, Pepper D, Currier GW, et al. The psychopharmacology of agitation: consensus statement of the american association for emergency psychiatry project Beta psychopharmacology workgroup West J Emerg Med, 2012.PMID 22461918
- [4]Nordstrom K, Zun LS, Wilson MP, et al. Medical evaluation and triage of the agitated patient: consensus statement of the american association for emergency psychiatry project BETA medical evaluation workgroup West J Emerg Med, 2012.PMID 22461915
- [5]Huf G, Coutinho ES, Adams CE, et al. Rapid tranquillisation in psychiatric emergency settings in Brazil: pragmatic randomised controlled trial of intramuscular haloperidol versus intramuscular haloperidol plus promethazine BMJ, 2007.PMID 17954515
- [6]Raveendran NS, Tharyan P, Alexander J, et al. Rapid tranquillisation in psychiatric emergency settings in India: pragmatic randomised controlled trial of intramuscular olanzapine versus intramuscular haloperidol plus promethazine BMJ, 2007.PMID 17954514
- [7]Isbister GK, Calver LA, Page CB, et al. Randomized controlled trial of intramuscular droperidol versus midazolam for violence and acute behavioral disturbance: the DORM study Ann Emerg Med, 2010.PMID 20868907
- [8]Calver L, Page CB, Downes MA, et al. The Safety and Effectiveness of Droperidol for Sedation of Acute Behavioral Disturbance in the Emergency Department Ann Emerg Med, 2015.PMID 25890395
- [9]Foo LK, Duffull SB, Calver L, et al. Population pharmacokinetics of intramuscular droperidol in acutely agitated patients Br J Clin Pharmacol, 2016.PMID 27530285
- [10]Isbister GK, Calver LA, Downes MA, et al. Ketamine as Rescue Treatment for Difficult-to-Sedate Severe Acute Behavioral Disturbance in the Emergency Department Ann Emerg Med, 2016.PMID 26899459
- [11]Ostinelli EG, Brooke-Powney MJ, Li X, et al. Haloperidol for psychosis-induced aggression or agitation (rapid tranquillisation) Cochrane Database Syst Rev, 2017.PMID 28758203
- [12]Huf G, Alexander J, Gandhi P, et al. Haloperidol plus promethazine for psychosis-induced aggression Cochrane Database Syst Rev, 2016.PMID 27885664
- [13]Anderson EL, Nordstrom K, Wilson MP, et al. American Association for Emergency Psychiatry Task Force on Medical Clearance of Adults Part I: Introduction, Review and Evidence-Based Guidelines West J Emerg Med, 2017.PMID 28210358
- [14]Wilson MP, Nordstrom K, Anderson EL, et al. American Association for Emergency Psychiatry Task Force on Medical Clearance of Adult Psychiatric Patients. Part II: Controversies over Medical Assessment, and Consensus Recommendations West J Emerg Med, 2017.PMID 28611885
- [15]Spencer BWJ, Gergel T, Hotopf M, et al. Unwell in hospital but not incapable: cross-sectional study on the dissociation of decision-making capacity for treatment and research in in-patients with schizophrenia and related psychoses. Br J Psychiatry, 2018.PMID 29909778
- [16]Huf G, Coutinho ES, Adams CE, et al. Physical restraints versus seclusion room for management of people with acute aggression or agitation due to psychotic illness Psychol Med, 2012.PMID 22405443
- [17]Knox DK, Holloman GH Jr Use and avoidance of seclusion and restraint: consensus statement of the american association for emergency psychiatry project BETA seclusion and restraint workgroup West J Emerg Med, 2012.PMID 22461919
- [18]Stowell KR, Florence P, Harman HJ, et al. Psychiatric evaluation of the agitated patient: consensus statement of the american association for emergency psychiatry project BETA psychiatric evaluation workgroup West J Emerg Med, 2012.PMID 22461916