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Trial registered on ANZCTR
Registration number
ACTRN12608000267358
Ethics application status
Approved
Date submitted
29/11/2007
Date registered
28/05/2008
Date last updated
24/11/2015
Type of registration
Retrospectively registered
Titles & IDs
Public title
Cardiac Resynchronization Therapy Based Heart Failure Monitoring Study
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Scientific title
A nonrandomised trial on the safety and efficacy of performing intra-thoracic and intra-cardiac measurements, and realtime comparison with left atrial pressures using cardiac resynchronisation therapy in patients with heart failure.
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Secondary ID [1]
497
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CRT based heart failure monitoring study
Ethics Ref:URB/07/10/052
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Secondary ID [2]
283113
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nil known
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Universal Trial Number (UTN)
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Trial acronym
zLAP
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Heart Failure
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Condition category
Condition code
Cardiovascular
2680
2680
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0
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Coronary heart disease
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Patients requiring the insertion of a Bi-ventricular pacemaker/defibrillator, for treatment of ventricular dyssynchrony and heart failure, will be offered the oppurtunity to participate in this trial. The sponsor will provide the PROMOTE device Model 3213, or later automatic internal cardiac defibrillator devices with similar functions. A HeartPOD (Left Atrial Pressure monitoring device) will be implanted at the same time. Research of the new features of the PROMOTE device to capture intra-thoracic and intra-cardiac electrical impedance measurements and left atrial pressures will be done. The completion of the trial will
be when the 12th participant has had one year of follow-up.
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Intervention code [1]
2306
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Treatment: Devices
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Comparator / control treatment
Uncontrolled. Validity of left atrial pressure (LAP) measurements will be checked at Right Heart Catheterisations.
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Safety and efficacy of performing intra-thoracic and intra-cardiac measurements, and left atrial pressures.
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Assessment method [1]
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Timepoint [1]
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Months 1-3 : Clinical Observation period where therapy is managed by physician based on clinical criteria.
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Secondary outcome [1]
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Therapy managed by patient per "DynamicRX" based on twice daily left atrial pressure readings.
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Assessment method [1]
5999
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Timepoint [1]
5999
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Months 4-6 : DynamicRX period
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Secondary outcome [2]
6000
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Therapy managed by physician based on clinical criteria and left atrial pressure
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Assessment method [2]
6000
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Timepoint [2]
6000
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Months 4-6 : Titration period
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Eligibility
Key inclusion criteria
Age>18 and <=85;an approved indication for cardiac resynchronization therapy via pacemaker(CRT-P) or cardiac resynchronization therapy via defibrillator(CRT-D);may be a Homeostasis 1 trial participant;able and willing to participate as per the trial protocol.
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Minimum age
18
Years
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Maximum age
85
Years
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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
Intractable Heart Failure or listed for cardiac transplantation; Acute Myocardial Infarction or Acute Coronary Syndrome; Recent surgery or (Percutaneous Coronary Intervention(PCI);Cerebrovascular Accident (CVA);Transient Ischaemic Attack(TIA);Pulmonary Embolus (PE);Deep Vein Thrombosis(DVT).
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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)
Potential participants are consented. All participants will receive a defibrillator and a study device (left atrial pressure measurement device)
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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 2 / Phase 3
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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
1/01/2008
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Actual
30/01/2008
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Date of last participant enrolment
Anticipated
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Actual
22/06/2010
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
12
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Accrual to date
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Final
9
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Recruitment outside Australia
Country [1]
694
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New Zealand
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State/province [1]
694
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Funding & Sponsors
Funding source category [1]
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Commercial sector/Industry
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Name [1]
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St Jude Medical
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Address [1]
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15900 Valley View Court
Sylmar, CA 91342
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Country [1]
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United States of America
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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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St Jude Medical
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Address [2]
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15900 Valley View Court
Sylmar, CA 91342
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Country [2]
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United States of America
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Primary sponsor type
Commercial sector/Industry
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Name
St Jude Medical
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Address
15900 Valley View Court
Sylmar, CA 91342
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Country
United States of America
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Secondary sponsor category [1]
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Hospital
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Name [1]
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Christchurch Hospital
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Address [1]
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Riccarton Ave,
Christchurch
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Country [1]
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New Zealand
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Upper South B Regional Ethics Committee
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Ethics committee address [1]
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Ministry of Health, 4th Floor, 250 Oxford Tce PO Box 3877, Christchurch
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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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08/10/2007
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Approval date [1]
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12/11/2007
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Ethics approval number [1]
4788
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URB/07/10/052
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Summary
Brief summary
A single centre study collecting and analyzing intra-thoracic and intra-cardiac electrical impedance measurements, intra-cardiac conduction time delays, and the left ventricular evoked response signal parameters from the St Jude Medical Cardiac Resynchronization Therapy (SJM CRT) device in a heart failure population with an implanted left atrial pressure sensor.
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Trial website
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Trial related presentations / publications
Abstract 12281: Impedance is an Unreliable Surrogate for Left Atrial Pressure in Ambulatory Patients with Heart Failure Richard Troughton1; Wandy Chan1; Iain Melton2; Ian Crozier2; Dan Gutfinger3; Fujian Qu3; Neal Eigler3; Spencer Rosero4; Leway Chen4; Philip Adamson5; Mark Harvey6; Maria Costanzo7; Apoor Gami8; William T Abraham9
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Public notes
current study completed as LAPTOP study completed early. No results available yet. (the LAPTOP study is the randomised study comparing the clinical benefits of the heartPOD device compared with normal treatment)
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Contacts
Principal investigator
Name
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A/Prof Richard Troughton
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Address
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Cardiology Department
Christchurch Hospital
Private Bag 4710
Christchurch 8140
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Country
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New Zealand
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Phone
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+64 3 3640 640
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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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Catherine Cruickshank
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Address
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Cardiology Clinical Trials Unit
2nd Floor Parkside West
Christchurch Hospital
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Country
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New Zealand
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Phone
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+64 3 364 1096
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Fax
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+64 3 378 6378
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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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Richard Troughton
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Address
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Cardiology Department
2nd Floor Parkside West
Christchurch Hospital
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Country
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New Zealand
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Phone
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+64 3 364 1096
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Fax
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+64 3 3641120
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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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