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Trial registered on ANZCTR
Registration number
ACTRN12608000443392
Ethics application status
Not yet submitted
Date submitted
30/07/2008
Date registered
5/09/2008
Date last updated
5/09/2008
Type of registration
Prospectively registered
Titles & IDs
Public title
Rapid versus stepwise negative pressure application for vacuum extraction assisted vaginal delivery
Rapid versus stepwise negative pressure application for vacuum extraction assisted vaginal delivery
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Scientific title
Rapid versus stepwise negative pressure application for vacuum extraction assisted vaginal delivery
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Secondary ID [1]
672
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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:
Assisted vaginal delivery
3483
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Condition category
Condition code
Reproductive Health and Childbirth
3639
3639
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0
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Childbirth and postnatal care
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Rapid negative pressure application: negative pressure of 0.8 kg/cm2 will be applied in one step in less than two minutes. When the final pressure has been achieved, traction will be undertaken during uterine contractions and maternal expulsive efforts.
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Intervention code [1]
3207
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Treatment: Devices
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Comparator / control treatment
Stepwise negative pressure application: The conventional stepwise method consists of four incremental steps of 0.2 kg/cm2 every two minutes to obtain a final negative pressure of 0.8 kg/cm2.
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Control group
Active
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Outcomes
Primary outcome [1]
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Primary outcomes
Success/failure rate of vacuum extraction procedure
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Assessment method [1]
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Timepoint [1]
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At the end of data collection phase which is about 24 months.
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Secondary outcome [1]
7682
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Birth asphyxia (apgar score < 7 at 5 minutes after birth)
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Assessment method [1]
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Timepoint [1]
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After delivery of the baby
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Eligibility
Key inclusion criteria
Uncomplicated singleton pregnancy, more than 34 weeks of gestation, cephalic presentation.
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Minimum age
18
Years
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Maximum age
45
Years
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Sex
Females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
• Refusal to give informed consent
• the woman is not entitled to give informed consent e.g. minors without a guardian
• severe fetal distress( as defined by attending physicians)
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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)
Sequentially numbered opaque sealed envelopes
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Computer generated
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Masking / blinding
Open (masking not 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
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
Not yet recruiting
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Date of first participant enrolment
Anticipated
1/10/2008
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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
330
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
1090
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Thailand
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State/province [1]
1090
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Bangkok
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Country [2]
1091
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Thailand
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State/province [2]
1091
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Kalasin
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Country [3]
1092
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Thailand
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State/province [3]
1092
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Khon Kaen
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Funding & Sponsors
Funding source category [1]
3703
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Government body
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Name [1]
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Thailand Research Fund
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Address [1]
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979/17-21 Paholyothin Road
Sam Saen Nai
Phayathai
Bangkok
10400
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Country [1]
3703
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Thailand
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Funding source category [2]
3704
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Government body
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Name [2]
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Thailand Research Fund
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Address [2]
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979/17-21 Paholyothin Road
Sam Saen Nai
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Country [2]
3704
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Thailand
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Primary sponsor type
Hospital
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Name
Kalasin Hospital
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Address
Kalasin Hospital
Kalasin Road
Muang
Kalasin
46000
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Country
Thailand
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Secondary sponsor category [1]
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Hospital
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Name [1]
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Khon Kaen Hospital
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Address [1]
3289
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Srichan Road
Khon Kaen
40000
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Country [1]
3289
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Thailand
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Secondary sponsor category [2]
3321
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University
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Name [2]
3321
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Khon Kaen University
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Address [2]
3321
0
123 Mitraparb Road
Khon Kaen
Thailand
40002
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Country [2]
3321
0
Thailand
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Secondary sponsor category [3]
3322
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University
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Name [3]
3322
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Khon Kaen University
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Address [3]
3322
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123 Mitraparb Road
Khon Kaen
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Country [3]
3322
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Thailand
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Ethics approval
Ethics application status
Not yet submitted
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Ethics committee name [1]
5757
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Ethics committee address [1]
5757
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Ethics committee country [1]
5757
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Date submitted for ethics approval [1]
5757
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21/08/2008
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Approval date [1]
5757
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Ethics approval number [1]
5757
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Summary
Brief summary
Vacuum extraction is a common procedure for assisting vaginal delivery. Traditionally, negative pressure application was recommended to be increased stepwisely. This trial aims to assess the effectiveness and safety of rapid versus stepwise negative pressure application for assisted vaginal delivery by vacuum extraction. This will be a hospital-based, multicentre, randomized controlled trial. Women eligible for the study are those with an uncomplicated singleton pregnancy of more than 34 weeks of gestation, with a cephalic presentation. Vacuum extraction procedure will be performed by application to the fetal head with a metal cup (Malmstrom, 50 mm) connected to an electric pump. The conventional stepwise method consists of four incremental steps of 0.2 kg/cm2 every two minutes to obtain a final negative pressure of 0.8 kg/cm2. In the rapid method the negative pressure of 0.8 kg/cm2 will be applied in one step in less than two minutes. When the final pressure has been achieved, traction will be undertaken during uterine contractions and maternal expulsive efforts. If there is detachment of the vacuum cup, it will be applied again, if clinically appropriate, to the fetal head in the manner indicated by the initial randomization. Thailand Research Fund by Senior Research Scholar will be responsible for funding and financial oversight of the centres. The trial will show whether rapid negative pressure application technique of vacuum extraction is as good as stepwise technique regarding effectiveness and safety.
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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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Pisake Lumbiganon
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Address
11948
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Department of Ob & Gyn
Faculty of Medicine
Khon Kaen University
Khon Kaen
40002
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Country
11948
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Thailand
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Phone
11948
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66-81-871-9039
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Fax
11948
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66-43-348-395
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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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Pisake Lumbiganon
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Address
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Department of Ob & Gyn
Faculty of Medicine
Khon Kaen University
Khon Kaen
40002
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Country
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Thailand
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Phone
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66-81-871-9039
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Fax
2876
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66-43-348395
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Email
2876
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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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