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Trial registered on ANZCTR
Registration number
ACTRN12609000567224
Ethics application status
Not yet submitted
Date submitted
30/06/2009
Date registered
10/07/2009
Date last updated
10/07/2009
Type of registration
Prospectively registered
Titles & IDs
Public title
Randomised controlled double blinded trial of the use of cold scalpel versus cutting diathermy for skin incisions in clean (non-bowel) laparoscopic and open surgery
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Scientific title
Randomised controlled double blinded trial comparing cosmesis and wound healing of skin incisions in clean (non-bowel) laparoscopic and open surgery using cold scalpel versus cutting diathermy
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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:
surgical skin incisions - wound healing and cosmesis
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Condition category
Condition code
Surgery
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Surgical techniques
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Skin incisions made using a flat, blunt-tipped stainless steel diathermy blade transmitting 30W pure cutting current. Cutting effect is produced by vapourising cells. Procedure requires only a few seconds.
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Intervention code [1]
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Treatment: Surgery
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Comparator / control treatment
Skin incisions made by stainless steel cold scalpel (sharpened edge) used to physically cut the skin. Procedure takes only a few seconds
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Control group
Active
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Outcomes
Primary outcome [1]
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Participant satisfaction with wound (cosmesis). This will be assessed on a visual analogue scale.
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Assessment method [1]
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Timepoint [1]
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1 week and 1 month after surgery
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Primary outcome [2]
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clinician assessment of wound (cosmesis). This will also be assessed using a visual analogue scale
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Assessment method [2]
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Timepoint [2]
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1 week and 1 month after surgery
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Secondary outcome [1]
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wound infection by clinician assessment at review appointments
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Assessment method [1]
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Timepoint [1]
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1 week and 1 month after surgery
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Secondary outcome [2]
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delayed healing by clinician assessment at review appointments
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Assessment method [2]
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Timepoint [2]
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1 week and 1 month after surgery
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Eligibility
Key inclusion criteria
Adult patients presenting to a single surgeon's rooms who are subsequently booked for elective clean (non-bowel) laparoscopic or open surgery (by the same surgeon)
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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
malignancy;
connective tissue disease;
immunocompromised patients;
diabetes mellitus;
bleeding disorders;
previous history of keloid/hypertrophic; scarring;
existing skin disease, open wounds on abdomen;
previous surgical wound infection following abdominal surgery;
obesity - defined as Body Mass Index (BMI) greater than 35;
smoking
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Study design
Purpose of the study
Treatment
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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)
Potential participants will be recruited from surgeon's rooms.
Once enrolled, the participant will be randomly assigned to one of two groups. A sealed envelope will be attached to the participant's consent form. This envelope will contain a paper labelled with "knife" or "diathermy", drawn from a box containing an equal number of each (identical from the exterior). The participant will not be informed which group they are assigned to.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
sealed envelope containing label with "knife" or "diathermy", drawn from a box containing equal number of each
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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
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Phase
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Type of endpoint/s
Efficacy
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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
3/08/2009
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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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Self funded/Unfunded
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Name [1]
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Address [1]
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Country [1]
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Primary sponsor type
Hospital
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Name
Alfred Health
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Address
Commercial Road
Melbourne
Victoria 3004
Australia
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Country
Australia
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Secondary sponsor category [1]
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Hospital
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Name [1]
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Peninsula Health
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Address [1]
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Hastings Road
Frankston
Victoria 3199
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Country [1]
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Australia
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Ethics approval
Ethics application status
Not yet submitted
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Ethics committee name [1]
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Alfred Health
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Ethics committee address [1]
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Commercial Road Melbourne Victoria 3004
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
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02/07/2009
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Approval date [1]
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Ethics approval number [1]
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1/09/0137
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Summary
Brief summary
The skin incisions to perform common surgical procedures can be made using a traditional steel knife blade (cold scalpel) or “electric knife” (cutting diathermy), which is a blunt electrode transmitting electric current to divide the skin. Despite both these methods being in use for many years, to date we have found very little convincing evidence that one is better than the other. Thus the choice of method used is often made on surgeon preference alone. Some surgeons are using both methods interchangeably in routine practice. We are conducting a trial which aims to determine whether one modality is superior to the other in terms of wound healing and infection. In this era of increasing awareness and prevention of blood-borne infection transmission, alternatives to the use of sharp instruments such as the traditional cold scalpel are continually being sought. If both methods are shown to produce similar results, the blunt cutting diathermy could provide a much safer alternative to the traditional sharp cold scalpel.
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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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Ms Rowan Frew
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Address
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Research and Ethics Unit, The Alfred
Commercial Road
Melbourne
Victoria 3004
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Country
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Australia
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Phone
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+61 3 9076 3848
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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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Dr Vivian Wai-Ling Yu
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Address
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Commercial Road
Melbourne
Victoria 3004
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Country
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Australia
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Phone
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+61 3 9076 2000
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Fax
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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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