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Trial registered on ANZCTR
Registration number
ACTRN12605000246684
Ethics application status
Approved
Date submitted
26/08/2005
Date registered
31/08/2005
Date last updated
31/08/2005
Type of registration
Retrospectively registered
Titles & IDs
Public title
Safety of Tramadol in Breastfeeding
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Scientific title
Safety of Tramadol in Breastfeeding - A Study of the Postoperative Use of Tramadol following Caesarian Section
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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:
Post Caesarean Section Analgesia and Breastfeeding
333
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Condition category
Condition code
Reproductive Health and Childbirth
384
384
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0
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Breast feeding
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Tramadol is widely used in breastfeeding but it is unclear exactly how much is transferred into breast milk. This study will look at levels of tramadol and its metabolite (M1) in breast milk and blood after regular administration (100 mg 6 hourly). Milk samples will be taken immediately prior to 4th dose, and 2 more samples plus one blood sample taken in dosing interval between 4th and 5th doses. Baby also assessed for tone and alertness after 4th dose.
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Intervention code [1]
278
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Treatment: Drugs
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Comparator / control treatment
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Quantitative analyses of tramadol and its metabolite (M1) in breast milk and maternal blood for pharmacokinetic analysis
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Assessment method [1]
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Timepoint [1]
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Secondary outcome [1]
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Assessment of infant after administration of tramadol to breast feeding mother (100 mg 6 hourly x 4 doses) using Neurological and Adaptive Capacity Score (NACS).
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Assessment method [1]
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Timepoint [1]
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Eligibility
Key inclusion criteria
ASA 1 or 2. Day 3 post Caesarean section.Happy to take tramadol as part of postoperative analgesia regime.Breastfeeding.Epidural for postoperative pain relief removed.
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Minimum age
Not stated
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Maximum age
Not stated
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Sex
Females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Known sensitivity to tramadol.Significant renal dysfunction.Decision not to breastfeed.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Non-randomised 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
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Phase 4
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Type of endpoint/s
Pharmacokinetics
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Statistical methods / analysis
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
3/04/2004
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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
75
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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]
437
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Other Collaborative groups
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Name [1]
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ANZCA Research Grant 2004
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Address [1]
437
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Country [1]
437
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Australia
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Primary sponsor type
Individual
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Name
Professor Michael Paech
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Address
King Edward Memorial Hospital
374 Bagot Road
Subiaco
Perth WA 6008
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Country
Australia
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Secondary sponsor category [1]
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Individual
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Name [1]
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Associate Professor Ken Ilett
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Address [1]
355
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Country [1]
355
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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King Edward Memorial Hospital
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Ethics committee address [1]
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374 Bagot Road, Subiaco, Perth, WA, 6008
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Ethics committee country [1]
1410
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Australia
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Date submitted for ethics approval [1]
1410
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Approval date [1]
1410
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Ethics approval number [1]
1410
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Summary
Brief summary
In this study we wish to find out how much of the pain relieving drug tramadol, given to women after caesarean section, passes into breast milk. The information will be used to inform lactating women about the risk versus benefit of taking tramadol during early breast feeding. Tramadol has been used overseas for many years but only became available in Australia in 1998. It is now widely used in the treatment of many types of pain and is particularly useful after surgery. There is very little information about the transfer of tramadol and its break-down products into breast milk. One study looking at a single dose of tramadol suggests single doses are unlikely to be a problem, but there is not enough information to be certain about the safety of tramadol for new-born babies when mothers who are breast feeding are taking repeated doses. If the infant was affected in any way this would probabvly be seen as sleepiness, floppiness and poor feeding. We aim to obtain iformation about how much tramadol passes to the breast feeding infant and be able to advise about the likelihood of significant adverse effects. 75 women taking oral tramadol regularly (100 mg every 6 hours)for postoperative pain control will be recruited after removal of their patient controlled epidural analgesia device, usually on day 3 post caesarean section. Breast milk samples will be taken just before the fourth dose and in between the 4th and 5th doses along with a single blood sample. The milk and blood sample will be sent to the laboratory to measure the amount of tramadol and its break-down product. The baby will also be assessed afte the 4th dose for tone and alertness.
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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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Professor Michael Paech or Research Nurses, Desiree Cavill & Tracy Bingham
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Address
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King Edward Memorial Hospital
374 Bagot Road
Subiaco Perth WA 6008
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Country
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Australia
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Phone
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+61 8 93402222 Pager 3223 (Mike Paech) or 3433 (Research Nurses)
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Fax
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+61 8 93402260
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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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Professor Michael Paech
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Address
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King Edward Memorial Hospital
374 Bagot Road
Subiaco Perth WA 6008
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Country
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Australia
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Phone
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+61 8 93402222 Pager 3223
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Fax
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+61 8 93402260
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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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