Please note that the copy function is not enabled for this field.
If you wish to
modify
existing outcomes, please copy and paste the current outcome text into the Update field.
LOGIN
CREATE ACCOUNT
LOGIN
CREATE ACCOUNT
MY TRIALS
REGISTER TRIAL
FAQs
HINTS AND TIPS
DEFINITIONS
Trial Review
The ANZCTR website will be unavailable from 1pm until 3pm (AEDT) on Wednesday the 30th of October for website maintenance. Please be sure to log out of the system in order to avoid any loss of data.
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been endorsed by the ANZCTR. Before participating in a study, talk to your health care provider and refer to this
information for consumers
Download to PDF
Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT04514250
Registration number
NCT04514250
Ethics application status
Date submitted
12/08/2020
Date registered
14/08/2020
Date last updated
14/02/2024
Titles & IDs
Public title
Stress Aortic Valve Index for Assessing Risk in Aortic Valve Stenosis Patients
Query!
Scientific title
Stress Aortic Valve Index for Assessing Risk in Aortic Valve Stenosis Patients
Query!
Secondary ID [1]
0
0
SAVI-AoS NL74875.100.20
Query!
Universal Trial Number (UTN)
Query!
Trial acronym
SAVI-AoS
Query!
Linked study record
Query!
Health condition
Health condition(s) or problem(s) studied:
Aortic Valve Stenosis
0
0
Query!
Condition category
Condition code
Intervention/exposure
Study type
Observational [Patient Registry]
Query!
Patient registry
Query!
Target follow-up duration
Query!
Target follow-up type
Query!
Description of intervention(s) / exposure
Query!
Comparator / control treatment
Query!
Control group
Query!
Outcomes
Primary outcome [1]
0
0
Evaluation of the valve metrics vs baseline clinical parameters (KCCQ)
Query!
Assessment method [1]
0
0
A primary endpoint is the comparison of baseline clinical parameters (quality of life survey (Kansas City Cardiomyopathy Questionnaire Overall Score (KCCQ-OS) (score 1-100), between SAVI (dimensionless) and each of mean aortic gradient (mmHg), aortic valve area (cm2), and maximal aortic valve velocity (m/s)
Query!
Timepoint [1]
0
0
1 to 5 years
Query!
Primary outcome [2]
0
0
Evaluation of the valve metrics vs baseline clinical parameters (6MWT)
Query!
Assessment method [2]
0
0
A primary endpoint is the comparison of baseline clinical parameters (6 minute walking test (6MWT) (meters), between SAVI (dimensionless) and each of mean aortic gradient (mmHg), aortic valve area (cm2), and maximal aortic valve velocity (m/s)
Query!
Timepoint [2]
0
0
1 to 5 years
Query!
Eligibility
Key inclusion criteria
* Age = 50 years
* Moderate aortic stenosis confirmed in the past 3 months by standard echocardiographic evaluation: aortic valve area >1.0 cm2 plus either maximal velocity 2.5-3.9 m/s or mean gradient 15-39 mmHg
* Ability to undergo exercise stress testing
* Ability to understand and the willingness to provide written informed consent
Query!
Minimum age
50
Years
Query!
Query!
Maximum age
No limit
Query!
Query!
Sex
Both males and females
Query!
Can healthy volunteers participate?
No
Query!
Key exclusion criteria
A potential subject who meets any of the following criteria will be excluded from participation in this study
* Any hemodynamic criterion for severe AS: maximal velocity >= 4 m/s, mean gradient >= 40mmHg, aortic valve area =< 1 cm2
* Percutaneous coronary intervention or coronary artery bypass grafting in the past three months, or have revascularization planned in the near future
* Known, unrevascularized, and severe coronary artery disease (for example a 90% diameter stenosis or FFR<0.7 in the proximal left anterior descending artery)
* Impaired left ventricular function (ejection fraction <50%)
* Unicuspid, bicuspid, or non-calcified aortic valve observed during echocardiography (note that later cusp fusion noted during study-related cardiac imaging will not exclude a subject)
* Severe aortic regurgitation, mitral valve disease, tricuspid regurgitation, or a significant intracardiac shunt
* Co-existing hypertrophic cardiomyopathy or severe septal hypertrophy >15mm
* Persistent atrial fibrillation with uncontrolled ventricular response
* Recent (within 6 weeks) acute coronary syndrome
* Estimated glomerular filtration rate =30 mL/min or end-stage renal disease on replacement therapy (dialysis)
* Severe COPD GOLD stage 3 or 4, home oxygen dependence, or =2 pulmonary inhalers (note that well-treated and stable asthma and GOLD stage 1 or 2 COPD is permitted)
* Severe comorbid condition with life expectancy <2 years
* Prior adverse reaction to dobutamine
* Severe iodine contrast allergy
* Pregnancy
* Severe pulmonary hypertension with systolic pulmonary artery pressure greater than 50mmHg or isolated and symptomatic right ventricular failure
Query!
Study design
Purpose
Query!
Duration
Query!
Selection
Query!
Timing
Prospective
Query!
Statistical methods / analysis
Query!
Recruitment
Recruitment status
Active, not recruiting
Query!
Data analysis
Query!
Reason for early stopping/withdrawal
Query!
Other reasons
Query!
Date of first participant enrolment
Anticipated
Query!
Actual
14/04/2021
Query!
Date of last participant enrolment
Anticipated
Query!
Actual
Query!
Date of last data collection
Anticipated
1/10/2028
Query!
Actual
Query!
Sample size
Target
Query!
Accrual to date
Query!
Final
52
Query!
Recruitment in Australia
Recruitment state(s)
Query!
Funding & Sponsors
Primary sponsor type
Other
Query!
Name
Catharina Ziekenhuis Eindhoven
Query!
Address
Query!
Country
Query!
Ethics approval
Ethics application status
Query!
Summary
Brief summary
Discrepancies exist among aortic stenosis severity classification, patient symptom burden, and - in some cases - even survival. The new Stress Aortic Valve Index (SAVI) metric correlates better with transvalvular flow and might be a better predictor of symptoms and prognosis. The current study will demonstrate the value of SAVI (both non-invasive and invasive) in patients with moderate aortic stenosis. The population will consist of subjects at least 50 years old with moderate aortic stenosis (defined as aortic valve area \>1.0 cm2 plus either maximal velocity 2.5-3.9 m/s or mean gradient 15-39 mmHg). Subjects with severe concomitant valve disease or severe unrevascularized coronary artery disease will be excluded, so that the isolated prognosis of aortic stenosis can be investigated. All subjects will undergo invasive SAVI measurements during catheterization. Furthermore patients will receive non-invasive testing with an exercise echocardiogram and computed tomography (CT) scan for non-invasive SAVI measurements. The short-term objective will compare SAVI with standard resting indexes for symptom burden, functional capacity, and biomarkers. The long-term objective will associate SAVI and standard resting indexes with clinical outcomes related to valvular disease. The investigators hypothesize that low SAVI (more marked AS during stress) will track with more symptoms and a worse prognosis. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: The patients will have several study visits. The index visit will be planned to obtain informed consent and baseline parameters. The measurement visit(s) will consist of the invasive SAVI measurement, echocardiogram, stress echo imaging, 6-minute walk test, quality of life questionnaire, and the cardiac CT. During the final visit after 12 months, subjects will undergo a CT valvular calcium scan, quality of life questionnaire, and 6-minute walk test. Every subject will have an echocardiogram yearly as suggested by guideline criteria and could possibly be contacted until five years after enrollment. Blood samples will be drawn at baseline and the 1-year follow-up. Potentially the new SAVI metric could identify patients at higher risk among those with moderate gradient AS. However, since no outcome data currently exists regarding SAVI and prognosis, no conclusions could be derived from these measurements until study completion.
Query!
Trial website
https://clinicaltrials.gov/study/NCT04514250
Query!
Trial related presentations / publications
Query!
Public notes
This record is viewable in the ANZCTR as it had previously listed Australia and/or New Zealand as a recruitment site, however these sites have since been removed
Query!
Contacts
Principal investigator
Name
0
0
Query!
Address
0
0
Query!
Country
0
0
Query!
Phone
0
0
Query!
Fax
0
0
Query!
Email
0
0
Query!
Contact person for public queries
Name
0
0
Query!
Address
0
0
Query!
Country
0
0
Query!
Phone
0
0
Query!
Fax
0
0
Query!
Email
0
0
Query!
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 not provided in
https://clinicaltrials.gov/study/NCT04514250
Download to PDF