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Trial registered on ANZCTR
Registration number
ACTRN12612001029886
Ethics application status
Approved
Date submitted
3/09/2012
Date registered
25/09/2012
Date last updated
17/07/2018
Type of registration
Prospectively registered
Titles & IDs
Public title
The effect of Space Suits on intraoperative wound contamination in patients undergoing knee replacement surgery.
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Scientific title
In patients undergoing primary total knee joint replacement at waitakere hospital, is there a difference between Space Suits, space suits with glove taping and conventional gowns in terms of wound contamination as detected by PCR and TSMI.
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Secondary ID [1]
280944
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Nil known
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Universal Trial Number (UTN)
U1111-1133-0771
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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:
Wound contamination as a marker for deep infection during primary total knee joint replacement
287041
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Condition category
Condition code
Surgery
287368
287368
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0
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Other surgery
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Infection
287637
287637
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0
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Studies of infection and infectious agents
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Surgical gowns used during total knee joint replacement
(Intervention 1) the operating surgeons and scrub nurse will wear standard Stryker T5 spacesuits.
(Intervention 2) the operating surgeons and scrub nurse will wear standard Stryker T5 spacesuits with tape applied the gown/glove interface on both cuffs.
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Intervention code [1]
285380
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Prevention
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Intervention code [2]
285726
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Treatment: Surgery
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Comparator / control treatment
(Control for intervention 1, space suits without tape) the operating surgeons and scrub nurse will wear standard surgical gowns.
(Control for intervention 2, space suits with tape.) the operating surgeons and scrub nurse will wear standard Stryker T5 spacesuits.
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Control group
Active
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Outcomes
Primary outcome [1]
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wound contamination as measured by PCR and TSMI analysis of wound samples
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Assessment method [1]
287641
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Timepoint [1]
287641
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Control taken at time 0
During surgery taken at 1 hour into the operation
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Secondary outcome [1]
298989
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Nil
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Assessment method [1]
298989
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Timepoint [1]
298989
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Nil
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Eligibility
Key inclusion criteria
All patients under Mr Bayan for an elective primary knee joint replacement, who consent to inclusion in the study.
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Minimum age
No limit
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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
No exclusion criteria - must be primary elective knee joint replacement
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Study design
Purpose of the study
Prevention
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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)
Patients are allocated by numbered, sealed, opaque envelopes opened just prior to the operation
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Sequence is generated through a random number generator
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
Surgical staff can not be blinded in this study. However the investigator reponsible for data processing and analysis is blinded to the patient groups.
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Phase
Not Applicable
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Type of endpoint/s
Safety/efficacy
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
1/10/2012
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Actual
3/08/2013
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Date of last participant enrolment
Anticipated
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Actual
10/08/2014
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Date of last data collection
Anticipated
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Actual
10/08/2014
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Sample size
Target
75
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Accrual to date
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Final
75
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Recruitment outside Australia
Country [1]
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New Zealand
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State/province [1]
4454
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Auckland
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Funding & Sponsors
Funding source category [1]
285734
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Charities/Societies/Foundations
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Name [1]
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Wishdone trust
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Address [1]
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PO Box 5545
Lambton Quay
Wellington 6145
New Zealand
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Country [1]
285734
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New Zealand
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Primary sponsor type
Hospital
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Name
Northshore Hospital
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Address
124 Shakespeare Road Westlake 0622
Auckland
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Country
New Zealand
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Secondary sponsor category [1]
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University
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Name [1]
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University of Auckland, School of biomedical sciences
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Address [1]
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85 Park Road
Grafton
Auckland 1023
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Country [1]
284559
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New Zealand
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Northern Regional A ethics committee
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Ethics committee address [1]
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Ministry of Health No 1 The Terrace PO Box 5013 Wellington 6145
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Ethics committee country [1]
287737
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New Zealand
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Date submitted for ethics approval [1]
287737
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Approval date [1]
287737
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04/09/2012
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Ethics approval number [1]
287737
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12/NTA/11
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Summary
Brief summary
Deep infection following total joint replacement remains a devastating complication for both the patient and the health sector. It is estimated that a single deep infection following a THJR incurs a cost of around $150,000. To combat this problem, Charnely pioneered the use of body exhaust suits which were later validated. A large MRC trial reported by Lidwel in the 1980s showed a marked reduction in infection rates with the use of laminar flow ventilation and body exhaust suits (BES), leading to their widespread introduction. However, modern body suit systems have eschewed the use of the full body exhaust system due to its cumbersome nature and cost. These ‘Space Suit’ systems have not been studied as extensively as the previous BES suits and use a helmet based fan. This fan creates a positive pressure situation inside the gown which is quite distinct from the previous BES suits, and may lead to disruption of the theatre airflow and cause particles shed from the surgical team to be deposited within the sterile field. The New Zealand Joint Registry data suggests that spacesuit use is linked to an increase in the rate of early joint arthroplasty infections. This runs counter to expectations, and many surgeons have concluded the registry data is flawed. This randomised controlled trial will use real tissue samples during TKJR to investigate whether the use of spacesuits increases the likelihood of wound contamination, and therefore infections. The analysis of wound samples is to be done by PCR and TSMI which has been shown to be a sensitive and specific measure of real wound contamination
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Trial website
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Trial related presentations / publications
Presented at NZOA Registrar paper day 2015, NZOA ASM 2015 and Ross Nicholson paper day 2016
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Public notes
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Contacts
Principal investigator
Name
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Dr Otis Shirley
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Address
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Department of orthopaedics, Northshore hospital, 124 Shakespeare Road Westlake 0622, Auckland
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Country
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New Zealand
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Phone
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+6421979702
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Otis Shirley
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Address
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Department of orthopaedics, Northshore hospital, 124 Shakespeare Road Westlake 0622, Auckland
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Country
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New Zealand
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Phone
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+649486 8900
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Fax
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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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Otis Shirley
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Address
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Department of orthopaedics, Northshore hospital, 124 Shakespeare Road Westlake 0622, Auckland
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Country
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New Zealand
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Phone
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+649486 8900
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Fax
8688
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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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