- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03315429
Unmasking the dynAmic Component in functionaL mitraL rEGuRgitatiOn in Chronic Heart Failure (ALLEGRO)
Unmasking the Dynamic Component in Functional Mitral Regurgitation in Chronic Heart Failure
Background:
Chronic heart failure (HF) is frequently accompanied by functional mitral regurgitation (FMR) caused by left ventricular (LV) remodeling and subsequent papillary muscle displacement resulting in mitral valve (MV) leaflet tethering, dilatation and flattening of the mitral annulus and reduced closing forces. Up to moderate FMR affects the majority of patients with systolic heart failure - roughly 80% - still independently increasing mortality. Every fifth patient with chronic heart failure experiences a progression of FMR during the first three years of follow up despite guideline directed heart failure therapy, which is independently associated with a poor prognosis. Furthermore, MR is well known to have a strong dynamic component not only during the cardiac cycle at rest and with exercise.
Aims of the study:
The investigators therefore aim to assess whether stress tests in patients with functional mitral regurgitation unmasks significant dynamic mitral regurgitation or might aid to identify patients at risk of FMR progression in patients with functional mitral regurgitation in heart failure with reduced ejection fraction (HFrEF) under guideline directed medical therapy.
Study design:
The investigators will prospectively perform stress tests in all patients with non-severe FMR that are routinely seen in the heart failure outpatient clinic.
Study patients:
Patients with stable chronic heart failure on optimal medical therapy, who undergo routine ambulatory clinical control visits in the heart failure outpatient ward of the Medical University of Vienna, will be included in the present study. A written informed consent will be obtained before inclusion. Inclusion criteria will be a non-severe FMR, an age of at least 18 years and stable heart failure related medical therapy in the last 3 months.
Methods:
All patients that are willing to participate will undergo stress testing (i.e. volume challenge and low dose dobutamine stress) to determine whether patients display severe dynamic FMR under stress conditions. Within the registry patients will be followed-up during routine ambulatory visits for three years. Patients with severe dynamic functional mitral regurgitation will be compared to patients without severe dynamic FMR. Record of clinical events during the FUP will be performed. Routine laboratory parameters, have been measured at inclusion. Additionally, neurohormone patterns will be measured at baseline and at peak stress.
Sample size:
Expecting a prevalence of severe dynamic FMR of 20%, the investigators would include a total of 150 chronic heart failure patients taking also into account a study-dropouts of 20% ( loss of follow-up and mortality).
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Georg Goliasch, MD, PhD
- Phone Number: +434040046140
- Email: georg.goliasch@meduniwien.ac.at
Study Locations
-
-
-
Vienna, Austria, 1090
- Recruiting
- Medical University of Vienna
-
Contact:
- Georg Goliasch, MD, PhD
- Phone Number: +434040046140
- Email: georg.goliasch@meduniwien.ac.at
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- non-severe FMR,
- age of at least 18 years,
- stable heart failure related medical therapy in the last 3 months.
Exclusion criteria
- non-willing to participate
- myocardial infarction,
- cardiac decompensation within the last 3 months,
- pregnancy,
- life expectancy of less than 1 year for non cardiac reasons.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: DIAGNOSTIC
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
OTHER: Stress testing arm
Stress testing of patients with functional mitral regurgitation.
|
stress testing of patients with functional mitral regurgitation
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
prevalence of severe dynamic FMR under stressed conditions
Time Frame: 3 years
|
3 years
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Identification of a relationship between dynamic FMR (defined as advance of at least one grade in severity with transition to at least moderate during stress) and FMR progression during rest within the 3 year follow-up period.
Time Frame: 3 years
|
3 years
|
correlation of the prevalence of dynamic FMR with the dynamic levels of neurohormones
Time Frame: 3 years
|
3 years
|
Establishment of an association between dynamic FMR and outcome (combined measure consisting of hospitalization for heart failure and/or death) during the follow-up period
Time Frame: 3 years
|
3 years
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1590/2017
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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