Study of Platelet Activation by Severe Aortic Stenosis and Its Correction by Transcatheter Aortic Valve Implantation

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Aortic valve stenosis
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Home-Based Exercise Program For Recovery After Transcatheter Aortic Valve Replacement Microembolic Signals and Serum Markers of Neuronal Damage During Transcatheter Aortic Valve Implantation. CHANGE Neo™ TA Registry With ACURATE Neo™ Aortic Bioprosthesis and ACURATE Neo™ TA Transapical Delivery System FORWARD PRO Study Interventional Post-market Study With the Evolut™ PRO System SMT Embolic Deflection CE Mark Trial DEFLECT I Echocardiographic Assessment of Cardiovascular Changes in Long Term Space Flight Nitinol Circular Blade Functional Assessment In TAVI: FAITAVI CoreValve VIVA Study Evaluation of the Clinical Outcomes of CoreValve in Degenerative Surgical Aortic Bioprosthesis. 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Support The TransCatheter Valve and Vessels Trial TAVR Without Predilatation Safety and Efficacy Study of MicroPort’s Transcatheter Aortic Valve and Delivery System for TAVI Enable® Aortic Sutureless Bioprosthesis Evaluation Radiation Following Percutaneous Balloon Aortic Valvuloplasty to Prevent Restenosis Myocardial Flow Reserve in Severe AS Without Obstructive Coronary Artery Disease Clinical Significance of Collagen Metabolism Changes in Left Cardiac Ventricle Medtronic CoreValve Evolut R U.S. Clinical Study (Evolut 34R Addendum) HLT transfemOral Replacement of aortIc Valve Via transcatherteriZatiON CANADA Aortic Stenosis Pre-Transcatheter Aortic Valve Replacement (TAVR) Procedure CT Scan PREVAIL-20J – Transfemoral Placement of 20mm Aortic Balloon Expandable Transcatheter Valve Trial RESPOND EDGE Post Market Study Impact of SAVR and TAVR on Patient’s Activity and Mobility BIOVALVE – I / II Clincial Investigation Comparison of Blood and Crystalloid Cardioplegia Ventriculo-arterial Coupling Modification Evaluated by PRAM During TAVI Procedure CoreValve Advance International Post Market Study HLT transfemOral Replacement of aortIc Valve Via transcatherteriZatiON SWISS TAVI Registry CoreValve™ Evolut R™ FORWARD Study Transfemoral Replacement of Aortic Valve With HLT MeriDIAN Valve Early Feasibility Trial Follow-up After TAVR Without Systematic Intensive Care Unit Admission ACURATE NEO/TF Transcatheter Heart Valves and Non-inferiority Versus Medtronic CoreValve Systems CoreValve™ Evolut R™ 34 mm System Registry (CoreValve34) Inflammation and Thrombosis in Patients With Severe Aortic Stenosis After Transcatheter Aortic Valve Replacement (TAVR) ACURATE TA™ Valve Implantation Registry: SAVI 2 Colibri Transcatheter Aortic Heart Valve System Study HLT Meridian Valve CE Mark Trial Transfemoral Replacement of Aortic Valve With HLT MeriDIAN Valve Feasibility Trial CANADA Assessment of Arrhythmias in Patients Undergoing Transcatheter Aortic Valve Implantation Using a Small Insertable Cardiac Monitoring Device Reactive Oxygen Species Following Aortic Valve Replacement Biological Factors Associated With Subclinical Valvular Thrombosis Hemodynamic Comparison of Tissue Aortic Valves Volume Challenge Added to DSE in the Diagnosis of Severe LFLGAS Impact of Perioperative Treatment With Intravenous Glutamine on Myocardial Protection in Cardiac Surgery Patients With Aortic Stenosis The Effects of High Spinal Anesthesia on Heart Function, Stress Response and Pain Control in Aortic Valve Surgery A Clinical Trial of Transcatheter Aortic Valves in Dialysis Patients (Japan) Erythropoietin + Iron Therapy for Anemic Patients Undergoing Aortic Valve Replacement A Study Evaluating the Effects of Ataciguat (HMR1766) on Aortic Valve Calcification Efficacy of Angiotensin Receptor Blocker Following aortIc Valve Intervention for Aortic STenOsis: a Randomized mulTi-cEntric Double-blind Phase II Study Prehabilitation to Improve Functional and Clinical Outcomes in Patients With Aortic Stenosis Evaluation of Transcatheter Aortic Valve Replacement Compared to SurveilLance for Patients With AsYmptomatic Severe Aortic Stenosis Phono- and Electrocardiogram Assisted Detection of Valvular Disease The Medtronic TAVR 2.0 US Clinical Study PREVAIL-J – Transfemoral & Transapical Placement of Aortic Balloon Expandable Transcatheter Valves Trial (Japan) Regression of Myocardial Fibrosis After Aortic Valve Replacement Transcatheter Aortic Valve Replacement Versu Surgical Aortix Valve Replacement for Treating Elderly Patients With Severe Aortic Stenosis and Small Aortic Annuli: A Prospective Randomized Study The VIVA Trial ACURATE Neo™ AS Aortic Bioprosthesis for Implantation Using the ACURATE neoTM AS TF Transfemoral Delivery System in Patients With Severe Aortic Stenosis THE ALIGN-AS TRIAL: JenaValve Pericardial TAVR Aortic Stenosis Study Prognostic Impact of Myocardial Longitudinal Strain in Asymptomatic Aortic Stenosis: a Meta-Analysis Severe Aortic Valve Stenosis and Concomitant Coronary Artery Disease in Patients Undergoing TAVI Treatment of Aortic Stenosis in Brazil: Cost-Utility Analysis of TAVI vs SAVR Clinical Evaluation of MDT-2111 in Subjects With Small Aortic Annuli and Symptomatic Severe Aortic Stenosis Valvuloplasty Scoring Balloon Catheter First-in-Man Study Effect of Angiotensin II Receptor Blockers (ARB) on Left Ventricular Reverse Remodelling After Aortic Valve Replacement in Severe Valvular Aortic Stenosis Surgical Treatment of Aortic Stenosis With a Next Generation Surgical Aortic Valve Registry to Evaluate the Impact of a Valve Coordinator on Aortic Stenosis / TAVI Outcome – (German Pilot) Quality of Care in AS IMPULSE Study Biomarkers in Aortic Stenosis – B.A.S.S. CoreValve® System Australia/New Zealand Clinical Study The Role of Cardiac Mechanics, Biomarkers and Frailty in Aortic Stenosis High-Sensitivity Troponin T Plasma Levels in Patients With Aortic Stenosis (Tyrolean Aortic Stenosis Study-2) Role of Active Valvular Calcification and Inflammation in Patients With Aortic Stenosis Interest of Pulse Wave Velocity Measurement as a Predictor of Severity of Aortic Stenosis A Prospective Study of Fractional Flow Reserve Assessment of Intermediate Coronary Stenoses in Severe Aortic Stenosis Prospective Balloon Aortic Valvuloplasty Identification of Parameters in rapId-proGression Subgroup Patients With Moderate Aortic Stenosis RHEIA (Randomized researcH in womEn All Comers With Aortic Stenosis) Effects of High Dose Atorvastatin in Patients With Surgical Aortic Stenosis Early Surgery for Patients With Asymptomatic Aortic Stenosis Predicting Aortic Stenosis Progression by Measuring Serum Calcification Propensity Bicuspid Aortic Valve Stenosis and the Effect of vItamin K2 on Calciummetabolism on 18F-NaF PET/MRI Endothelial Progenitors in Aortic Stenosis: Association With Aortic Stenosis Progression and Severity Outcomes of Transcatheter Aortic Valve Implantation in Oncology Patients With Severe Aortic Stenosis Evaluation of BAV in Different Hemodynamic Entities of Severe AS Intravenous Iron Supplement for Iron Deficiency in Patients With Severe Aortic Stenosis The SAPIEN 3 Ultra System in Intermediate Risk Patients With Symptomatic Severe Aortic Stenosis Clinical Value of Stress Echocardiography in Moderate Aortic Stenosis CENTERA THV System in Intermediate Risk Patients Who Have Symptomatic, Severe, Calcific, Aortic Stenosis Requiring Aortic Valve Replacement Outcomes of Transcatheter Aortic Valve Implantation in Management of Severe Symptomatic Aortic Stenosis Safety and Efficacy of Lotus Valve For TAVI In Patients With Severe Aortic Stenosis In Chinese Population Rehabilitation in Aortic Stenosis Patients Aortic Stenosis Evaluated Via Modern Ballistocardiography and Seismocardiography Study of Platelet Activation by Severe Aortic Stenosis and Its Correction by Transcatheter Aortic Valve Implantation Sizing-sTrategy of Bicuspid AoRtic Valve Stenosis With Transcatheter Self-expandable Valve The Plasma Serotonin and Aortic Stenosis: a Pilot Study. 18F-NaF Uptake and Aortic Stenosis Progression Cardiovascular Rehabilitation in Patients With Severe Aortic Stenosis Submitted to Valvar Correction Aortic Stenosis and PhosphodiEsterase Type 5 iNhibition (ASPEN): A Pilot Study Clinical Outcome of Patients With Low-gradient Severe Aortic Stenosis Ultrasonic Markers for Myocardial Fibrosis and Prognosis in Aortic Stenosis Fetal Intervention for Aortic Stenosis and Evolving Hypoplastic Left Heart Syndrome The PARTNER 3 – Trial – The Safety and Effectiveness of the SAPIEN 3 Transcatheter Heart Valve in Low Risk Patients With Aortic Stenosis Ventricular Remodeling In Patients With Aortic Stenosis Assessed Echocardiography Podocan and Wnt Pathway in Left Ventricular Remodeling of Aortic Stenosis Preoperative Assessment of Aortic Valve Stenosis and Coronary Artery Disease Statin Therapy in Asymptomatic Aortic Stenosis Validation of the “TASQ” in Patients Undergoing SAVR or TF-TAVI Analysis and Comparative Evaluation of Aortic Calcium by Computed Tomography and Histopathology in Patients With Aortic Stenosis Improving Echo Measurements in the Diagnosis of Aortic Stenosis accuRate Evaluation of Benefit With Optimal Medical Treatment With or With-Out Transcatheter Valve Repair of PARADOXical Low Flow Low Gradient Aortic Stenosis – REBOOT-PARADOX Aortic Stenosis: Determinants and Prognostic Value of Preoperative Left Ventricular Remodeling After Valvular Replacement Randomized Study for the Optimal Treatment of Symptomatic Patients With Low Gradient Severe Aortic Valve Stenosis and Preserved Left Ventricular Ejection Fraction Microvascular Dysfunction in Aortic Stenosis Percutaneous Aortic Valve 18F System for the Treatment of Patients With Severe Aortic Stenosis Determination of the Acute Effects of Aortic Stenosis on Coronary Artery Haemodynamics Mechanism of Decompensation Evaluation – Aortic Stenosis Speckle Tracking Imaging in Patients With Low Ejection Fraction Aortic Stenosis (SPArKLE-AS) A Comparison of Advanced Imaging Techniques in Aortic Stenosis Aortic Valve Replacement Versus Conservative Treatment in Asymptomatic Severe Aortic Stenosis Microparticles in Severe Aortic Stenosis Aortic Stenosis and PhosphodiEsterase iNhibition With Aortic Valve Replacement (ASPEN-AVR): A Pilot Study An Investigational Drug on Clinical Outcomes in Patients With Aortic Stenosis (Narrowing of the Major Blood Vessel of the Heart)(MK-0653A-043 AM4)(COMPLETED) Clinical Evaluation of MDT-2111 in Subjects With Symptomatic Severe Aortic Stenosis Acute Hemodynamic Effects of Sildenafil in Patients With Severe Aortic Stenosis Transapical Transcatheter Treatment Versus Conventional Surgery in Patients With Native Aortic Valve Stenosis Measurement of Myocardial Stiffness Using Elastometry in Patients With Aortic Stenosis Study to Improve Outcomes in Aortic Stenosis Multicenter Prospective Study of Low-Flow Low-Gradient Aortic Stenosis (TOPAS Study) Severe Aortic Stenosis in Patients Referred for Valve Surgery Frailty and Mortality in Older Old With Severe Aortic Stenosis Myocardial Efficiency of the Left Ventricle in Asymptomatic Patients With Aortic Valve Stenosis – a Prognostic Marker and a Target for Intervention? PCSK9 Inhibitors in the Progression of Aortic Stenosis Early Surgery Versus Conventional Treatment in Very Severe Aortic Stenosis Randomized Study to Evaluate the Efficacy of Fluvastatin on Inflammatory Markers in Patients With Aortic Stenosis. 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Brief Title

Study of Platelet Activation by Severe Aortic Stenosis and Its Correction by Transcatheter Aortic Valve Implantation

Official Title

Study of Platelet Activation by Severe Aortic Stenosis and Its Correction by Transcatheter Aortic Valve Implantation (TAVI) Platelet Activation in TAVI

Brief Summary

      Study of platelet activation by severe aortic stenosis and its correction by Transcatheter
      Aortic Valve Implantation (TAVI)

Detailed Description

      -  Background: TAVI has emerged as an alternative to surgical aortic valve replacement for
           patients with severe, symptomatic aortic stenosis (AS) and is expanding worldwide with
           more than 50,000 patients treated to date.

        -  Purpose Changes in haemostasis, particularly in platelet activation or reactivity
           before, during and after TAVI have never been studied. Valve replacement is known to
           alleviate von Willebrand factor abnormalities associated with AS. A potential
           improvement of platelet function could also occur after TAVI. Indeed, circulating
           platelets may be desensitized and under-reactive due to multiple passages through the
           stenotic valve and could recover normal reactivity after TAVI. Besides, TAVI presents a
           risk of major ischemic complications. The investigators can hypothesize the involvement
           of high reactive platelets in peri-procedural thrombotic or ischemic events. This study
           of the platelet activation kinetics will be performed by comparing several specific
           markers before and at various times after valve implantation.

        -  Primary outcome To evaluate the kinetics of platelet activation before and at various
           times after valve implantation, by comparing several specific markers in peripheral
           venous blood samples before (day 0) and at days 1 and 5±1 after the procedure.

        -  Study design and number of subjects: This is a prospective, monocentric, study. The test
           group includes up to 15 patients treated by transfemoral TAVI using a MedTronic
           CoreValve (MCV) prosthesis. Platelet activation will be studied before and after the
           procedure and compared to a reference established with an age-matched, aspirin-treated,
           atherosclerotic population (30 patients in the control group).

        -  Eligibility criteria:

             -  inclusion criteria: test group: patients with severe aortic stenosis and
                transfemoral TAVI with MCV aspirin treatment . Control group: age-matched patients
                with stable coronary artery disease treated by aspirin but without aortic stenosis.

             -  exclusion criteria: recent (1 month) acute coronary syndrome; treatment by anti
                platelet agents other than aspirin

        -  Procedures: Specific platelet activation markers, circulating platelet/monocytes
           aggregates, platelet reactivity and vWF will be assessed in peripheral venous blood
           before, 1 and 5 days after TAVI and in ascending aorta during the procedure.

Study Type

Interventional

Primary Outcome

the change of kinetics of platelet activation

Secondary Outcome

 Changes of platelet activation

Condition

Aortic Stenosis

Intervention

test

Study Arms / Comparison Groups

 test group
Description:  Patient with severe, symptomatic AS (Aortic valve area < 0,6 cm2/m2 SC), deemed, after multidisciplinary heart team evaluation, contra-indicated or at high risk for surgery and suitable for TF TAVI with a MCV prosthesis.

Publications

* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.

Recruitment Information

Recruitment Status

Other

Estimated Enrollment

44

Start Date

May 2014

Completion Date

October 2015

Primary Completion Date

October 2015

Eligibility Criteria

        Inclusion Criteria:

          -  Test group

               -  Severe symptomatic AS (Aortic valve area < 0,6 cm2/m2 SC), deemed, after
                  multidisciplinary heart team evaluation, contra-indicated or at high risk for
                  surgery and suitable for TF TAVI with a MCV prosthesis.

               -  Aspirin treatment (75-160 mg/d for at least one week)

          -  Control group

               -  Stable coronary artery disease, unscathed of AS

               -  Aspirin treatment (75-160 mg/d for at least one week)

        Exclusion Criteria:

          -  Test group:

               -  Acute coronary syndrome 1 month before inclusion

               -  Any co-morbidity limiting life-expectancy < 1 year

               -  Terminal chronic kidney disease requiring hemodialysis thrombocytopenia <100 G/L,
                  anemia (Hb < 10 g/dl)

               -  Treatment by another antiplatelet agent within 10 days before the procedure

          -  Control group:

               -  Acute coronary syndrome 1 month before inclusion

               -  Any co-morbidity limiting life-expectancy < 1 year

               -  Terminal chronic kidney disease requiring hemodialysis

               -  Thrombocytopenia <100 G/L

               -  Treatment by another antiplatelet agent within 10 days before the procedure

Gender

All

Ages

50 Years - N/A

Accepts Healthy Volunteers

No

Contacts

Pierre SIE, MD PhD, ,

Location Countries

France

Location Countries

France

Administrative Informations

NCT ID

NCT02504632

Organization ID

14 7078 03

Responsible Party

Sponsor

Study Sponsor

University Hospital, Toulouse

Collaborators

 Medtronic

Study Sponsor

Pierre SIE, MD PhD, Study Chair, University Hospital, Toulouse

Verification Date

March 2017