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Trial registered on ANZCTR
Registration number
ACTRN12608000376347
Ethics application status
Approved
Date submitted
21/07/2008
Date registered
31/07/2008
Date last updated
1/11/2013
Type of registration
Retrospectively registered
Titles & IDs
Public title
A comparison of ultrasound and nerve stimulation for femoral catheter placement
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Scientific title
Nerve stimulation in ultrasound guided femoral catheter placement. A comparison of two endpoints for correct needle tip position.
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Secondary ID [1]
259931
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Nil Known
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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:
Analgesia following major knee surgery
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Condition category
Condition code
Anaesthesiology
3585
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0
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Other anaesthesiology
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Femoral nerve catheter placed using either ultrasound or nerve stimulation, needle endpoint.
Ultrasound placement
Needle will be placed just posterior to the femoral nerve using ultrasound imaging then catheter threaded 3 cm past needle tip.
Nerve stimulation placement
Needle will be placed such that a patella response is present at <0.5 mA. Catheter is then threaded 3 cm beyond needle tip.
The duration of each procedure is 15 minutes, and the period of overall intervention is 48 hours.
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Intervention code [1]
3163
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Treatment: Devices
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Comparator / control treatment
Neurostimulation needle endpoint.
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Control group
Active
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Outcomes
Primary outcome [1]
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Pain scores during first 48 hours, researcher questioning patient on days 1 and 2. Assessment tool nurse-reported pain score (NRPS), numerical rating pain score (0-10).
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Assessment method [1]
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Timepoint [1]
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During first 48 hours after the procedure is completed, researcher questioning patient in the afternoon of days 1 and 2.
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Secondary outcome [1]
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Needle time under the skin at femoral nerve catheter (FNC) insertion
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Assessment method [1]
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Timepoint [1]
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At time of FNC insertion
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Eligibility
Key inclusion criteria
Patients requiring continuous femoral analgesia following elective knee surgery under the care of the principal investigator
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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?
Yes
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Key exclusion criteria
1. Patient refusal/inability to consent
2. Allergy amide LA drugs
3. Existing neurological disorders/neuropathy of the operative extremity
4. Infection at site of needle puncture
5. Ischaemic heart disease
6. Chronic opioid therapy
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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)
Subjects will be recruited from/by:
1. Surgeon in his rooms
2. By selection from the operation list
3. By phone call during the week prior to surgery
4. By Participant Information Sheet mailed during the week prior to surgery
Allocation of treatment by randomised number generator to assign the patient to one of the 2 groups. Allocation is concealed in sealed opaque envelopes.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Computer generated random number.
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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
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
31/03/2008
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Actual
31/03/2008
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Date of last participant enrolment
Anticipated
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Actual
18/12/2008
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
60
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
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New Zealand
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State/province [1]
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Auckland
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Funding & Sponsors
Funding source category [1]
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Hospital
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Name [1]
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Anaesthesia Research Trust
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Address [1]
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Auckland City Hospital
Park Road
Grafton
Auckland 1023
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Country [1]
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New Zealand
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Funding source category [2]
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Commercial sector/Industry
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Name [2]
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I-Flow Corporation
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Address [2]
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Lake Forrest Drive
Lake Forrest
CA 92630
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Country [2]
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United States of America
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Primary sponsor type
Individual
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Name
Dr Michael Fredrickson
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Address
Anaesthesia Institute
P O Box 109 199
Newmarket
Auckland 1149
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Country
New Zealand
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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]
3251
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Northern Y Regional Ethics Committee
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Ethics committee address [1]
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P O Box 1031 Hamilton Waikato
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Ethics committee country [1]
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New Zealand
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Date submitted for ethics approval [1]
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Approval date [1]
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31/03/2008
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Ethics approval number [1]
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NTY/07/09/103
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Summary
Brief summary
To compare two techniques for femoral nerve catheter placement: Ultrasound only and ultrasound combined with nerve stimulation. To compare the effect of these two placement methods on catheter placement time and the indices of catheter effectiveness. Secondary outcome measures will include degree of patient discomfort during insertion and number of needle passes needed for catheter insertion. The use of fluid spread as an end point for correct needle tip position would result in more efficient femoral nerve catheter placement while providing a catheter success rate comparable to that based on a neurostimulatory endpoint. If the primary hypothesis is confirmed, this study will provide evidence supporting the use of ultrasound only (without nerve stimulation) as an end point for interscalene catheter placement. At present the community standard is nerve stimulation. This may result in future patients undergoing catheter insertions with reduced needle passes. Potential benefits might include more efficient catheter placements, with less discomfort and with possibly a reduced incidence of short term neurological sequelae.
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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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Dr Michael Fredrickson
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Address
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Anaesthesia Institute
P O Box 109 199
Newmarket
Auckland 1149
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Country
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New Zealand
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Phone
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+6495221117
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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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Dr Michael Fredrickson
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Address
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Anaesthesia Institute
P O Box 109 199
Newmarket
Auckland 1149
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Country
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New Zealand
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Phone
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0064 9 522 1117
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Fax
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0064 9 522 1127
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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 Michael Fredrickson
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Address
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Anaesthesia Institute
P O Box 109 199
Newmarket
Auckland 1149
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Country
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New Zealand
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Phone
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0064 9 522 1117
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Fax
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0064 9 522 1127
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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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