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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT01457274
Registration number
NCT01457274
Ethics application status
Date submitted
22/09/2011
Date registered
21/10/2011
Date last updated
27/04/2015
Titles & IDs
Public title
"Light" Versus "Deep" Bispectral Index (BIS) Guided Sedation for Colonoscopy
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Scientific title
A Randomised Controlled Trial of "Light" Versus "Deep" Sedation for Elective Outpatient Colonoscopy: Recall, Procedural Conditions and Recovery
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Secondary ID [1]
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2011.066
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Anaesthesia
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Condition category
Condition code
Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Other interventions - Sedation depth
Experimental: "light" sedation - In this study the depth of sedation will be guided by the Bispectral Index monitor (BIS monitor). A BIS value of 70-80 will be targeted in the "light" sedation arm.
Active comparator: "deep" sedation - In this study the "deep" sedation arm will have a BIS value of less than 60 targeted.
Other interventions: Sedation depth
The intervention is the depth of sedation targeted in this study.
Patients enrolled in this study will be sedated with the same medications (fentanyl bolus and propofol target controlled infusion), and at the same starting doses, in each study arm. However, the depth of sedation targeted will differ between the arms, and this depth will be guided by the BIS monitor.
It is expected that those patients randomised to "deep" sedation will require a higher dose of sedative medication to achieve their target BIS value (\<60) than those in the "light" sedation group (BIS 70-80).
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Intervention code [1]
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Other interventions
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Recall of procedure
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Assessment method [1]
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Upon rousing patients will be asked if they remember anything between the commencement of sedation and when they awoke from sedation
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Timepoint [1]
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1 day. Day of procedure
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Secondary outcome [1]
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Complications
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Assessment method [1]
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The treating anaesthetist will record if any of the following complications occur during the sedation for colonoscopy.
1. Hypoxia
2. Airway obstruction
3. Hypotension
4. Bradycardia
5. Agitation
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Timepoint [1]
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1 day. Day of procedure only.
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Secondary outcome [2]
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Speed and quality of recovery
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Assessment method [2]
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Time from starting sedation until opening eyes in the post anaesthesia care unit, and time until readiness for hospital discharge will be recorded.
Cognitive function at hospital discharge, compared to pre-procedure function, will be assessed by the CogState(TM) test battery.
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Timepoint [2]
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1 day. Day of procedure only. Measured before discharge from hospital
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Secondary outcome [3]
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Satisfaction
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Assessment method [3]
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Proceduralist and anaesthetist satisfaction with the sedation will be recorded at the end of the procedure.
Patient satisfaction with their anaesthesia care will be assessed at the time they are ready for hospital discharge.
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Timepoint [3]
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1 day. Day of procedure only. Measured before discharge from hospital
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Secondary outcome [4]
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Dreaming
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Assessment method [4]
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Upon rousing in the post anaesthesia care unit patients will be asked the modified Brice questionnaire ("What is the last thing you remember before you went to sleep?", "What is the first thing you remember when you woke up?", "Did you remember anything in between?", and "Did you have any dreams?").
Dreaming will be assessed by the response to quesion 4.
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Timepoint [4]
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1 day. Day of procedure.
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Eligibility
Key inclusion criteria
* Plan for elective outpatient colonoscopy under sedation
* Able and willing to provide written informed consent for study entry and completion of all study related procedures
* American Society of Anesthesiologists' (ASA) physical status grade 1-3
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Colonoscopy and gastroscopy booked as joint procedures
* Colonoscopy on emergency patients and/or inpatients
* Inadequate English comprehension (verbal and written to understand the Participant Information and Consent Form)
* Intellectual or psychiatric disability that prevents consent to and comprehension of study procedures
* Significant cognitive impairment that prevents independent conduct of activities of daily living or results in 3rd party procedural consent being obtained
* ASA physical status grade 4-5
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Study design
Purpose of the study
Other
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people assessing the outcomes
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/09/2011
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/12/2014
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Sample size
Target
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Accrual to date
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Final
200
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Recruitment in Australia
Recruitment state(s)
VIC
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Recruitment hospital [1]
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Royal Melbourne Hospital - Parkville
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Recruitment postcode(s) [1]
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3050 - Parkville
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Funding & Sponsors
Primary sponsor type
Other
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Name
Melbourne Health
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
In this trial, patients undergoing elective colonoscopy under sedation will be randomised to BIS-guided sedation targeting either "light" (bispectral index \[BIS\] 70-80) or "deep" (BIS\<60) sedation. Sedation will be achieved with a standardised regimen of target-controlled infusion of propofol and fentanyl bolus. The primary end point will be the incidence of procedure recall in each group - this will be assessed at the conclusion of the procedure. The procedural conditions, cardio-respiratory complications and recovery including cognitive function will be assessed during and immediately after the procedure. The incidence of dreaming and patient satisfaction with anaesthesia care will be recorded immediately after the procedure. The study will be complete when the patient leaves the hospital on the day of the procedure.
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Trial website
https://clinicaltrials.gov/study/NCT01457274
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Megan L Allen, BMBS
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Address
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Melbourne Health
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT01457274
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