Oral Olanzapine Versus Haloperidol or Diazepam

November 3, 2022 updated by: Dr. Esther Wai Yin Chan, The University of Hong Kong

Oro-dispersible Olanzapine (Wafer) Versus Conventional Oral Haloperidol or Diazepam Tablets for the Management of Acute Agitation in the Accident and Emergency Department - a Multicentre Randomised Clinical Trial

The purpose of this study is to determine whether oral olanzapine is safer (fewer adverse events) and more effective (shorter time to sedation) than conventional haloperidol or diazepam when used in the management of acute agitation in the emergency.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

  1. Investigate oral use of sedating drugs within a predominantly Chinese population, to address this void in international literature impacting the management of acute agitation.
  2. The multi-centre Randomised Clinical Trial will determine the safety and efficacy of oral olanzapine, in comparison with conventional medicines (haloperidol or diazepam) in a three-arm comparison for the sedation of acutely agitated patients in AEDs. Specifically, we aim to determine if administration of oral olanzapine (a)is more effective than sedation with oral haloperidol or oral diazepam alone; (b)is safer than sedation with comparison arms; (c)decreases the amount of subsequent redosing or alternative drugs required; (d)is more favourable than the haloperidol and diazepam arms with respect to safety, efficacy and adverse events.

Investigate potential variables leading to AED attendance and/or admission requiring oral sedation. These may include patient demographic and regular medications and adherence.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
12

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Hong Kong
      • Hong Kong, Hong Kong
        • Queen Elizabeth Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Accident & Emergency Department patients
  • Requiring oral drug sedation (as determined by an emergency clinician) will be enrolled.

Exclusion Criteria:

  • known hypersensitivity or contraindication to the study drugs
  • reversible aetiology for agitation (e.g. hypotension, hypoxia, hypoglycaemia)
  • known pregnancy
  • acute alcohol withdrawal
  • refusal to take oral medication
  • patients from correctional facilities

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Olanzapine
oro-dispersible tablet (wafer)(Zyprexa), 5 mg, single dose
Drug: Olanzapine oro-dispersible 5Mg Tab
Patient allocated to this arm will be given 5 mg olanzapine oro-dispersible tablet and an encapsulated placebo tablet
Other Names:
  • Zyprexa
Active Comparator: Haloperidol
Haloperidol encapsulated tablet, 2 mg tablet, single dose
Drug: Haloperidol 2Mg encapsulated Tab
Patient allocated to this arm will be given 2 mg encapsulated haloperidol tablet and an oro-dispersible placebo tablet
Active Comparator: Diazepam
Diazepam encapsulated tablet, 2mg tablet, single dose
Drug: Diazepam 2Mg encapsulated Tab
Patient allocated to this arm will be given 2 mg encapsulated diazepam tablet and an oro-dispersible placebo tablet

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Time to achieve adequate sedation
Time Frame: Within 60 minutes from drug administration
Adequate sedation is determined by a 6-point validated scale
Within 60 minutes from drug administration

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Total study drug doses administered; alternative drugs and doses used
Time Frame: From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour
From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour
Corrected QT interval (QTc)
Time Frame: From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour
From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour
AED length of stay (LOS)
Time Frame: From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour
From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour
Adverse events
Time Frame: From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour
including airway management (jaw thrust, oral, nasal airway), need for assisted ventilation (bag/mask, intubation), oxygen desaturation <90%, systolic BP<90 mmHg, dystonic reactions, seizures, vomiting or aspiration
From Accident & Emergency Department(AED) admission to transfer or discharge from AED, an expected average of 1 hour

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
The University of Hong Kong

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Queen Elizabeth Hospital, Hong Kong

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2018

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 8, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 8, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 11, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 4, 2022

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 3, 2022

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ChanEW oral sedation RCT
  • 17111615 (Other Grant/Funding Number: Research Grant Council, Hong Kong)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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