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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT00960843
Registration number
NCT00960843
Ethics application status
Date submitted
14/08/2009
Date registered
18/08/2009
Date last updated
20/08/2012
Titles & IDs
Public title
Six-month Study to Compare the Effects of Volume- and Pressure-Guided Adjustments on Weight Loss and Satiety
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Scientific title
A Randomized, Controlled, 6-month Study to Compare the Effects of Volume- and Pressure-guided Adjustments on Weight Loss and Satiety in Patients Implanted With the Swedish Adjustable Gastric Band
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Secondary ID [1]
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CI-08-0009
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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:
Morbid Obesity
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Condition category
Condition code
Diet and Nutrition
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Obesity
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Metabolic and Endocrine
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Other metabolic disorders
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Devices - Intraband pressure recording system
Other interventions - Conventional Adjustment
Active comparator: Conventional Adjustment Group - Subject whose band adjustments will be made via conventional standard of care (e.g., volume, hunger).
Active comparator: Intraband Pressure Arm - Subjects whose band adjustments will be guided by intraband pressure readings.
Treatment: Devices: Intraband pressure recording system
Intraband pressure will be measured by a pressure recording system.
Other interventions: Conventional Adjustment
Band adjustments will be made via conventional standard of care (e.g., volume, hunger).
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Intervention code [1]
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Treatment: Devices
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Intervention code [2]
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Other interventions
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Percent Excess Weight Change at Day 180
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Assessment method [1]
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Percent Excess Weight Change will be calculated per subject as 100% times the difference between screening and Day 180 visit weight divided by the difference between screening weight and ideal body weight for a given sex and height of a subject. Excess weight is defined as the Screening Weight minus the ideal body weight. Ideal body weight is taken from the 1983 Metropolitan Life using the upper limit value of the medium frame range.
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Timepoint [1]
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Screening to Day 180
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Secondary outcome [1]
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Mean Static Intraband Pressure at Day 180
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Assessment method [1]
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Mean static Intraband Pressure will be automatically calculated by the Pressure Recording System as the sum of all pressure points divided by the number of seconds X 10 (10Hz data acquisition)
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Timepoint [1]
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Day 180
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Secondary outcome [2]
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Rate of Weight Loss kg/wk at Day 180
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Assessment method [2]
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Rate of weight loss = (screening weight (kg) - weight at Day 180 visit (kg)) / (number of days between screening and Day 180 visit / 7).
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Timepoint [2]
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Screening to Day 180
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Eligibility
Key inclusion criteria
* Able to comprehend, follow and give informed consent.
* Be at least 18 years of age at time of trial enrollment.
* Had a pre-implantation BMI between 35 and 55 kg/m2.
* Have received a SAGB VC implant 1) 30-60 days (and not undergone first band adjustment yet)prior to the date of enrollment.
* Willingness to be randomized to intraband-based or conventional adjustments
* Willingness to consent to monthly visits and possible measurements of intraband pressure (requiring access to the injection port).
* Willingness to undergo up to 7 band adjustments within the 6-month period of the study.
* Able to sit approximately at a 90 degree-angle, from the floor, for IBP measurements.
* Willingness to return to office visits around the same time of the first in-study adjustment (plus or minus 2 hours)
* Willingness to consent to a limited UGI series if the investigator suspects the presence of a band-related complication or if the intraband pressure recordings deviate from expected.
* Willingness to refrain from taking medications or supplements indicated for or known to induce weight loss.
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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
* Females currently known to be pregnant.
* Ongoing or unresolved band perforation or band leakage.
* Ongoing (unresolved) slippage, erosion, or pouch dilation.
* Documented esophageal dysmotility/dyskinesia.
* Ongoing (unresolved) port obstruction or tube kinking.
* Current injection port infection.
* History of band revision or replacement.
* Previously documented or ongoing esophageal dilatation.
* Any condition that, in the opinion of the Investigator, may jeopardize the subject's well-being or the soundness of this study.
* Current use of medications or supplements indicated for or known to induce weight loss at any point during the study.
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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)
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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
Parallel
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/07/2009
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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
1/11/2010
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Sample size
Target
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Accrual to date
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Final
51
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Recruitment in Australia
Recruitment state(s)
SA
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Recruitment hospital [1]
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Adelaide Bariatric Center - Bedford Park
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Recruitment postcode(s) [1]
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5042 - Bedford Park
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Recruitment outside Australia
Country [1]
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Czech Republic
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State/province [1]
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Prague
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Ethicon Endo-Surgery
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The purpose of this protocol is to determine how band fill volumes that are based on intraband pressure readings can influence the comfortability of the band and to compare weight loss with this methodology to weight loss with the conventional approach recommended in existing product labeling.
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Trial website
https://clinicaltrials.gov/study/NCT00960843
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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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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 scientific queries
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
No documents have been uploaded by study researchers.
Results are available at
https://clinicaltrials.gov/study/NCT00960843
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