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Trial registered on ANZCTR
Registration number
ACTRN12607000085471
Ethics application status
Approved
Date submitted
20/09/2006
Date registered
25/01/2007
Date last updated
25/01/2007
Type of registration
Retrospectively registered
Titles & IDs
Public title
A study to assess the safety and efficacy of Navigator in post operative cardiac surgery patients versus conventional care.
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Scientific title
AP2006-1: A prospective, randomised, multicentre, controlled group study to assess the safety and efficacy of Navigator versus conventional care in post operative cardiac surgery patients undergoing coronary bypass grafting and / or heart valve repair or replacement whilst utilising heart lung perfusion pump.
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Universal Trial Number (UTN)
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Trial acronym
NAV-1 Study
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Elective cardiac bypass grafting and / or heart valve repair or replacement whilst utilising heart lung perfusion pump.
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Condition category
Condition code
Cardiovascular
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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
Post operative cardiac patients entering the Intensive Care will be connected to the Navigator device with real-time data displayed in a graphical manner. The Navigator device will be connected until the Swan-Ganz catheter is removed. This is most commonly on day 2 after surgery, but could be as long as 7 days.
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Intervention code [1]
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Other interventions
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Comparator / control treatment
Post operative cardiac patients entering the Intensive Care will be connected to the Navigator device but without real-time data displayed in a graphical manner. The Navigator device will be connected until the Swan-Ganz catheter is removed. This is most commonly on day 2 after surgery, but could be as long as 7 days.
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Control group
Active
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Outcomes
Primary outcome [1]
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Average distance to the central point of the physician-prescribed target cardiovascular zone over the period that the patient is connected to Navigator.
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Assessment method [1]
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Timepoint [1]
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This will most commonly be on day 2 after surgery, but, dependent on speed of recovery, may be up to and beyond 7 days.
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Secondary outcome [1]
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1) Percentage time in the physician-nominated target cardiovascular zone
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Assessment method [1]
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Timepoint [1]
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over the period of time that the patient is connected to Navigator, usually over 2 days, but may be up to or more than 7 days
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Secondary outcome [2]
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2) clinically significant atrial fibrillation (AF)
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Assessment method [2]
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Timepoint [2]
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over the period the patient is connected to Navigator, usually for 2 days post-surgery, but may be up to or more than 7 days, depending on speed of recovery
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Secondary outcome [3]
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3) Multiple organ function, as assessed using the SOFA score
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Assessment method [3]
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Timepoint [3]
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calculated daily over the period the patient is hospitalised, usually for 5 days, but could be up to 10 days in cases of slow recovery
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Secondary outcome [4]
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4) Navigator device related adverse events and device failures.
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Assessment method [4]
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Timepoint [4]
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Eligibility
Key inclusion criteria
Who provide written informed consent and are about to undergo elective heart surgery requiring heart lung perfusion pump. Eligible patients will emerge from surgery with an arterial line and Swan Ganz catheter in situ and must require invasive measurement of cardiac output, mean arterial pressure and right atrial pressure.
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Minimum age
18
Years
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Maximum age
Not stated
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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
Patients will not be eligible for inclusion if the require extracorporeal membrane oxygenation, or have permenant pace makers or left ventircular assist devices in situ. A history of or pre-randomisation event of atrial fibrillation and/or intra-operative surgical treatment for atrial fibrillation will exclude patients from the study. Simillarly if the investigator deems the patient unco-operative or unsuitable for inclusion or considers an exisiting medical condition renders participation unsafe for the patient they will be excluded from the study. Patients will also be excluded if they are involved in another drug/device study or if they are pregnant or lactating females.
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Study design
Purpose of the study
Diagnosis
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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)
Central Randomisation by Phone
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
1:1 randomisation using a computer generated randomisation table and stratified by site and history of atrial fibrillation.
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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
multi-centre
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Phase
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
Not yet recruiting
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Date of first participant enrolment
Anticipated
31/10/2006
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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
100
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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]
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Commercial sector/Industry
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Name [1]
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Applied Physiology Pty Limited
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Address [1]
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Country [1]
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Primary sponsor type
Commercial sector/Industry
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Name
Applied Physiology Pty Limited
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Address
119 Willoughby Road
Crows Nest NSW 2065
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
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Nil
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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St George Hospital, Sydney
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Ethics committee address [1]
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
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Approval date [1]
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14/11/2006
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Ethics approval number [1]
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2006/100 Horton
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Ethics committee name [2]
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Alfred Hospital, Melbourne
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Ethics committee address [2]
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Ethics committee country [2]
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Australia
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Date submitted for ethics approval [2]
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Approval date [2]
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08/01/2007
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Ethics approval number [2]
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229/06
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Ethics committee name [3]
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St Vincent's Hospital, Sydney
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Ethics committee address [3]
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Ethics committee country [3]
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Australia
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Date submitted for ethics approval [3]
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Approval date [3]
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27/11/2006
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Ethics approval number [3]
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H06/127
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Summary
Brief summary
Post surgical patients often display instability in their blood pressure and flow (haemodynamic circulation) which, if not stabilized, can lead to a range of side effects such as reduced urine output, kidney failure, fluid in the lungs, disorganized and ineffective pumping of the blood by the heart, and stroke. These side effects usually require an extended hospital stay, additional investigations and medications, and all lead to additional cost. Navigator software has been developed to link with the patient’s bedside monitor and acquire and process data collected by the monitor. This data is then displayed graphically relative to target ranges for a variety of heart measurements that were determined by the physician specifically for the patient and entered into Navigator at the start of monitoring. This provides the physician with a real time picture of the patient’s blood pressure and flow, in comparison to the prescribed values he would like to achieve and provides unique guidance as to what fluid and medication treatments could be administered to make the patient more stable. The aim of the study is to demonstrate that the real time acquisition and subsequent processing and display of data produced by Navigator provides the clinician with appropriate data and guidance to achieve and maintain a prescribed target blood pressure and flow stability in the post operative patient when compared to conventional care in an ICU setting. The study will be conducted in 100 post-cardiac surgery patients male and female aged 18 and over that have undergone coronary bypass grafting and/or heart valve repair or replacement whilst utilizing heart lung perfusion pump (50 patients per study group). Patients that meet all of the inclusion / exclusion criteria will have a 50:50 chance of being randomized to one of two study groups, Navigator or control (conventional care). All patients will be connected to a bedside monitor which in turn is connected to an Avantech computer with the Navigator software installed. Those patients randomized to the Navigator group will have the full Navigator functions available; for those patients randomized to the control group the physician will still determine target values for the heart measurements, however once control is selected on the Navigator screen the graphical part of the screen will go blank. Each patient will be connected to Navigator for as long as their doctor wishes to have their heart function closely monitored by their heart catheter. Once this catheter is removed, Navigator will be disconnected. This will be between the day after surgery and around a week after surgery, depending on the speed of recovery. All patients will undergo standard treatments during their hospital stay. The aim of this study therefore, is to demonstrate that real time aquisition and subsequent processing and display of data produced by Navigator provides the clinican with the appropriate data and guidance to acheive and maintain a prescribed target haemodynamic stability in the post operative patient when compared to conventional care in an ICU setting. Acheiving early haemodynamic stability in the post operative cardiac patient as it is hoped will lead to improved patient outcome and reduced associated costs.
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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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Louise Hayman, Senior Partner
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Address
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Trident Clinical Research Pty Limited, Suite 204, 27 Merriwa Street, Gordon, NSW 2072
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Country
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Australia
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Phone
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+61 2 94999996
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Fax
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+61 2 94999998
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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 Geoffrey Parkin
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Address
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Medical Director, Applied Physiology Pty Limited, 119 Willoughby Road, Crows Nest, NSW 2065
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Country
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Australia
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Phone
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+61 418582281
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Fax
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+61 2 94392157
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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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