Related Experiment Video
Updated: May 28, 2026

Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
Published on: January 13, 2018
[Rapid tranquillisation; review of the literature and recommendations]
1UMC Maastricht en afdeling IntegraleZorg, Maastricht. m.bak@maastrichtuniversity.nl
Background:
In The Netherlands, no guidelines exist for rapid tranquillisation in the context of acute agitation, excitement or aggression secondary to a psychiatric disorder.
Aim:
To generate an overview of medication regimes suitable for rapid tranquillisation.
Method:
A literature search was conducted focussing on the effect of medical interventions in acute excitement, agitation or aggression. Primary outcome measurements were tranquillity, being calm, sedation, or asleep within two hours. Secondary outcome measures were frequency of re-administration and adverse side effects.
Results:
Haloperidol appears as effective as lorazepam; haloperidol in combination with lorazepam does not have added value to lorazepam or haloperidol alone. Dehydrobenzperidol, risperidone, olanzapine and aripiprazole are comparable in effectiveness to lorazepam or haloperidol. Haloperidol in combination with promethazine is associated with a more rapid onset of effect than lorazepam, haloperidol or olanzapine. Midazolam is faster than the combination of haloperidol and promethazine, but requires more frequent re-administration of medication and increases the risk for respiratory depression. The literature on quetiapine was insufficient. The level of evidence, however, is modest.
Conclusion:
Haloperidol in combination with promethazine, and olanzapine, are effective in psychotic agitation, although haloperidol plus promethazine has a more rapid onset of effect faster; lorazepam is effective in non-psychotic agitation, aggression or excitement as well as in acute agitation of unknown origin.
Related Concept Videos
Sedatives and Hypnotics: Overview
Sedative-hypnotics are categorized into barbiturates, benzodiazepines (BZDs), and non-benzodiazepines or Z-drugs. These drugs work by suppressing central nervous system activity, and this suppression is dose-dependent. Older sedative medications, like barbiturates, follow a linear curve in...
Sedatives and Hypnotics Drugs: Miscellaneous Agents
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Anxiolytic Drugs: Overview
Primary Types of Anxiolytic Drugs
1. Benzodiazepines:
Benzodiazepines bind to the GABA-A receptor in the brain, enhancing GABA's interaction. This action reduces neurotransmission, effectively blocking anxiety-associated limbic circuitry.
Sedatives and Hypnotics Drugs: Benzodiazepines
Benzodiazepines work by enhancing the effects of the inhibitory neurotransmitter GABA. They bind to the GABAA receptor, increasing its affinity for GABA, which opens chloride...
CNS Depressants: Barbiturates and Benzodiazepines
Drug Therapy
Antianxiety Medications