Prognostic Value of Myocardial Fibrosis Quantified Using CMR in Patient With Dilated Cardiomyopathy
: Fibrosis, in general, is a scarring process, which is characterized by fibroblast accumulation and excess deposition of extracellular matrix (ECM) proteins, which leads to distorted organ architecture and function. The contribution of fibrogenesis to impaired cardiac function is increasingly recognized. The fibrotic ECM causes increased stiffness and induces pathological signaling within cardiomyocytes resulting in progressive cardiac failure. Also, the excessive ECM impairs mechano-electric coupling of cardiomyocytes and increases the risk of arrhythmias. But today patient treatment and prognosis is based on ejection fraction quantification, QRS duration, and symptoms.
Hypothesis: the increased level of fibrosis quantified using T1 mapping technique, compared with normal value, is of prognostic value in patient with dilated cardiomyopathies under optimal treatment.
Methods: 330 patients are planned to be included and followed for 2 years
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Locations
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-
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Marseille, France, 13354
- Assistance Publique Hôpitaux de Marseille
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-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- patient with dilated cardiomyopathy and typical symptoms of cardiac insufficiency at the time of the diagnosis: oedemas of lower limbs, dyspnoea, asthenia.
- and of a reduction in the fraction of ventricular ejection left (awkward) 45 % measured in echocardiography ( modified Simpson biplane) and associated with a volume télédiastolic volume superior to the normal in echocardiography: > 90ml / m2 ( modified Simpson biplane).
Exclusion Criteria:
- Patients to whom the dysfunction VG is secondary or in a secondary overload of pressures in a HTA or a severe valvulopathie is in a coronary infringement(achievement), proved by histories of infarct or gestures(movements) of revascularisation (bypass(decking), stent) and or coronary hurts at least bi tronculaires significant the severity of which can explain the ventriculaire failure.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: Cardiomyopathy dilated patient
Cardiomyopathy dilated patients wil be evalueted by CMR using T1 mapping technique to evalueted the level myocardial fibrosis
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the level of myocardial fibrosis for patient suffering of cardiomyopathy dilated will be quantified using CMR T1 mapping technique
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Active Comparator: healthy subjects
healthy subject wil be evaluated by CMR using T1 mapping technique to know the baseline of myocardial fibrosis in healthy subjects
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the level of myocardial fibrosis for patient suffering of cardiomyopathy dilated will be quantified using CMR T1 mapping technique
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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Prognostic value of the increased level of myocardial fibrosis
Time Frame: two years
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The long-term forecast of the patients affected by CMD will be estimated by the survival without event. The events considered in this study are included in an associating combined criterion:
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two years
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Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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hemodynamic consequences of the increased level of myocardial fibrosis
Time Frame: txw years
|
The quantity of interstitial fibrosis at the time of the diagnosis will be correlated to the indicators of the reshaping left ventriculaire measured in echocardiography: decrease of more than 10 % of the fraction of ejection over 2 years or increase of the volume télédiastolique furthermore of 20ml / the year.
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txw years
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Collaborators and Investigators
Sponsor
Sponsor
Investigators
Investigators
- Principal Investigator: alexis JACQUIER, MD, Assistance Public Hôpitaux de marseille
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimated)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- 2011-A00887-34
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