- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01862237
Type II Diabetes Influence on Left Ventricular Remodeling and Outcomes in Patients Undergoing Aortic Valve Replacement Surgery. (DIAPASON)
Does Type II Diabetes Influence Prognosis and Left Ventricular Remodeling in Patients With Aortic Valve Stenosis Referred for Aortic Valve Replacement ?
This project focuses on the physiopathology of left ventricular remodeling associated with type II diabetes in patients with aortic valve stenosis referred for surgical aortic valve replacement.
The main objective is to compare the reverse left ventricular remodeling between patients with type II diabetes and case-control patients without diabetes at one(1) year after surgical aortic valve replacement.
The secondary objectives are :
- assess the influence of type II diabetes on left ventricular remodeling in patients presenting with aortic valve stenosis,
- assess the predictive value of myocardial fibrosis and other LV characteristics present prior to aortic valve surgery on the LV reverse remodeling and their influence on cardiovascular events at one (1) year after surgery,
- assess the influence of type II diabetes on cardiovascular morbidity and mortality post aortic valve surgery.
The investigators main hypothesis is that patients with type II diabetes and aortic valve stenosis requiring aortic valve replacement have poorer LV function and less favorable post surgery clinical outcomes than patients without type II diabetes.
Study Overview
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Hélène THIBAULT
- Phone Number: +33 4 72 35 73 32
- Email: helene.thibault@chu-lyon.fr
Study Locations
-
-
-
Lyon, France
- Recruiting
- Hospices Civils de Lyon - Hopital Louis Pradel
-
Contact:
- Hélène THIBAULT
- Phone Number: +33 4 72 35 73 32
- Email: helene.thibault@chu-lyon.fr
-
Principal Investigator:
- Hélène THIBAULT
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age > 18 years
- Arm 1: Treated Type II diabetes, Arm 2: absence of type II diabetes
- Aortic valve stenosis
- LVEF > 50% with no kinetic abnormalities
- Non significant obstructive coronary artery disease
- Absence of gadolinium enhanced MRI contraindications
- Informed consent signed
- Patient affiliated to the French Social Security.
Exclusion Criteria:
- Chronic arrhythmia or absence of sinus rhythm
- Past history of cardiomyopathy or coronary insufficiency
- Significant coronaropathy seen during the coronary angiography with >50% degree stenosis prior to aortic valve replacement
- Hemodynamically significant valvular dysfunction other than aortic stenosis (grade 2 mitral or aortic insufficiency, mitral valve stenosis < 1.5 cm2)
- Systemic chronic inflammatory disease leading to cardiac injury (scleroderma)
- Renal insufficiency (clearance < 30 ml/min)
- Insufficient transthoracic echocardiography echogenicity
- Type I diabetes mellitus
- Uncontrolled hypertension (> 180/100 mm Hg)
Study Plan
How is the study designed?
Design Details
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Patients with type II diabetes
Type II diabetes patients with aortic valve stenosis referred for aortic valve replacement.
|
|
Experimental: Patients without type II diabetes
No type II diabetes patients with aortic valve stenosis referred for aortic valve replacement.
|
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Left Ventricular Mass measured by echocardiography
Time Frame: Primary outcome is assessed at one year 1 year after aortic valve replacement.
|
Primary outcome is assessed at one year 1 year after aortic valve replacement.
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
cardiovascular events (cardiac mortality, heart failure, atrial or ventricular rhythm abnormalities) and clinical improvement (NYHA class, 6-minute walk test).
Time Frame: 1 year after aortic valve replacement.
|
1 year after aortic valve replacement.
|
|
Measurement of BNP (Brain Natriuretic Peptide).
Time Frame: 1 year after aortic valve replacement.
|
1 year after aortic valve replacement.
|
|
Echocardiographic parameters.
Time Frame: 1 year after aortic valve replacement.
|
Left Ventricular Ejection Fraction, Systolic Longitudinal Strain, Systolic Circumferential Strain, Systolic Radial Strain, Diameters, wall thickness.
|
1 year after aortic valve replacement.
|
Magnetic Resonance Imaging (MRI) parameters.
Time Frame: 1 year after aortic valve replacement.
|
LV mass, volumes, ejection fraction, replacement fibrosis mass on delayed enhanced studies, and interstitial fibrosis quantification (T1 mapping studies).
|
1 year after aortic valve replacement.
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Heart Diseases
- Cardiovascular Diseases
- Glucose Metabolism Disorders
- Metabolic Diseases
- Endocrine System Diseases
- Pathological Conditions, Anatomical
- Aortic Valve Disease
- Heart Valve Diseases
- Ventricular Outflow Obstruction
- Diabetes Mellitus
- Diabetes Mellitus, Type 2
- Aortic Valve Stenosis
- Ventricular Remodeling
Other Study ID Numbers
- 2011.699
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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