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Trial registered on ANZCTR
Registration number
ACTRN12608000330347
Ethics application status
Approved
Date submitted
4/07/2008
Date registered
15/07/2008
Date last updated
3/07/2012
Type of registration
Retrospectively registered
Titles & IDs
Public title
The Relevent trial: Rate of Lower Limb Deep Venous Thrombosis in patients with Traumatic Brain Injury (TBI): a pilot observational study
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Scientific title
The Relevent trial: Rate of Lower Limb Deep Venous Thrombosis in patients with Traumatic Brain Injury (TBI) admitted to intensive care: a pilot observational study
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Secondary ID [1]
620
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Nil
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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:
Lower limb deep venous thrombosis
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Condition category
Condition code
Cardiovascular
3548
3548
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0
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Diseases of the vasculature and circulation including the lymphatic system
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
Patients shall have ultrsonography and a thromboelastogram (blood test) performed on admission and thence every four days until death or discharge from the intensive care unit (ICU). The ultrasonography examination will take approximately 20 minutes. Patients will remain in the study whilst in the ICU.
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Intervention code [1]
2634
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Not applicable
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Comparator / control treatment
Not applicable
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Rate of lower limb deep venous thrombosis in traumatic brain injury patients admitted to intensive care during their stay in intensive care. This will be measured by means of a twice weekly venous ultrasound of both lower limbs.
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Assessment method [1]
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Timepoint [1]
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The outcome will be measured within 72 hours of admission to intensive care and twice weekly thereafter until discharge from intensive care or death in intensive care.
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Secondary outcome [1]
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The development of a hypercoaguable state will be measured by means of a specialised blood test called a thromboelastogram.
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Assessment method [1]
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Timepoint [1]
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The outcome will be measured within 72 hours of admission to intensive care and twice weekly thereafter until discharge from intensive care or death in intensive care.
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Eligibility
Key inclusion criteria
(1) Patients with TBI who are admitted to ICU (Glasgow Coma Scale <15), (2) age > 18 years, (3) no longer than 48 hours since primary traumatic injury, (4) expected to remain at least 96 hours in ICU.
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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
(1) Pregnancy or lactation, (2) inability to perform lower limb ultrasounds, (3) lack of consent, (4) enrolment in another trial.
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Study design
Purpose
Screening
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Duration
Longitudinal
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
1/07/2008
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Actual
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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
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Sample size
Target
100
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
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Charities/Societies/Foundations
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Name [1]
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Tattersalls Foundation and the National Trauma Research Institute
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Address [1]
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Level 4, 89 Commercial Road
Melbourne, VIC 3004
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Country [1]
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Australia
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Primary sponsor type
University
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Name
Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University
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Address
Level 3, 89 Commercial Road
Melbourne, VIC 3004
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
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Country [1]
3097
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Alfred Hospital Ethics Committee
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Ethics committee address [1]
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The alfred PO Box 315 Prahran VIC 3181
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Ethics committee country [1]
5482
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Australia
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Date submitted for ethics approval [1]
5482
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03/04/2008
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Approval date [1]
5482
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02/06/2008
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Ethics approval number [1]
5482
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89/08
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Ethics committee name [2]
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Alfred Hospital Ethics Committee
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Ethics committee address [2]
5628
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Ethics committee country [2]
5628
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Date submitted for ethics approval [2]
5628
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Approval date [2]
5628
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02/06/2008
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Ethics approval number [2]
5628
0
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Summary
Brief summary
Patients who are admitted to the intensive care unit with traumatic brain injuries (TBI) are at a significant risk of developing blood clots in their legs because (1) they are immobile, (2) their blood clots more quickly (part of the stress response to TBI) and (3) they tend not to be prescribed anti-clotting medication as they are at risk of further bleeding into their brain. About 30% of blood clots in the lower leg extend into the thigh and if untreated half of these will travel to the lung. Of those clots that travel to the lung 25% cause death. There is no current Australian or international data concerning the rate of blood clots in the legs in TBI. We plan to assess all patients with TBI on admission to the intensive care unit for blood clots by performing an ultrasound of their legs and repeating this twice weekly until discharge. We also plan to determine each participant’s propensity to develop clots: this shall be done by performing a blood test (1 teaspoon) called a thromboelastogram and these tests shall be done whenever a patient has an ultrasound. The results of the study will provide currently unknown data regarding the rate of lower limb blood clots in this at risk population. This in turn will help in the design of a future clinical trial comparing different clot prevention strategies in these patients.
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Trial website
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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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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 public queries
Name
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Dr Andrew Westbrook
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Address
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Level 3, 89 Commercial Road
Melbourne, VIC 3004
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Country
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Australia
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Phone
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+61 (0)3 99030280
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Fax
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+61 (0)3 99030071
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Email
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[email protected]
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Contact person for scientific queries
Name
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Dr Alistair Nichol
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Address
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Level 3, 89 Commercial Road
Melbourne, VIC 3004
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Country
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Australia
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Phone
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+61 (0)3 99030513
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Fax
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+61 (0)3 99030071
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Email
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[email protected]
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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
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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