Active clinical trials for "Cardiomyopathies"

To invegstive the Changes of Intestinal Flora and the improvements of Cardiac Fibrosis in Patients With Dilated Cardiomyopathy Diagnosed for the First Time by heart Rehabilitation

There is some limited evidence that reduced size of electrical complexes/traces of the heart on the electrocardiogram (ECG) may be associated with scarring in the heart muscle, which may predispose to serious life-threatening electrical abnormalities and sudden cardiac death (SCD). There is no current guidance on how young individuals and athletes with reduced ECG traces should be managed. Therefore, correct interpretation of this ECG finding is crucial for identifying athletes with disease and at risk of SCD. Some athletes experience SCD despite normal standard cardiac tests. The investigators, therefore, propose to study young healthy individuals and young athletes using cardiovascular MRI, cardiopulmonary exercise testing, 24 hour ECG monitoring and genetic analysis to determine the significance of reduced ECG traces and possibly revise current international sports recommendations.

The participant is being asked to take part in this trial, because the participant is a survivor of childhood cancer. Primary Objective To evaluate remote cardiomyopathy prediction via smartwatch and one clinical ECG and assess the concordance of the two ECGs in terms of predicted risk. Secondary Objective To build a novel predictive model solely on smartwatch ECG to predict risk for cardiomyopathy.

Approximately 1.5 million of the 44 million Blacks in the United States are carriers of the valine-to-isoleucine substitution at position 122 (V122I) in the transthyretin (TTR) protein. Virtually exclusive to Blacks, this is the most common cause of hereditary cardiac amyloidosis (hATTR-CA) worldwide. hATTR-CA leads to worsening heart failure (HF) and premature death. Fortunately, new therapies that stabilize TTR improve morbidity and mortality in hATTR-CA, especially when prescribed early in the disease. However, hATTR-CA is often diagnosed at an advanced stage and conventional diagnostic tools lack diagnostic specificity to detect early disease. The overall objectives of this study are to determine the presence of subclinical hATTR-CA and to identify biomarkers that indicate amyloid progression in V122I TTR carriers. The central hypothesis of this proposal is that hATTR-CA has a long latency period that will be detected through subclinical amyloidosis imaging and biomarker phenotyping. The central hypothesis will be tested by pursuing 2 specific aims: Aim 1) determine the association of V122I TTR carrier status with CMRI evidence of amyloid infiltration; Sub-aim 1) determine the association of V122I TTR carrier status with cardiac reserve; Aim 2) determine the association between amyloid-specific biomarkers and V122I TTR carrier status; and Sub-aim 2) determine the association of amyloid-specific biomarkers with imaging-based parameters and evaluate their diagnostic utility for identifying subclinical hATTR-CA. In Aim 1, CMRI will be used to compare metrics associated with cardiac amyloid infiltration between a cohort of V122I TTR carriers without HF formed by cascade genetic testing and age-, sex-, and race-matched non-carrier controls. For Sub-Aim 1, a sub-sample of carriers and non-carrier controls enrolled in Aim 1 will undergo novel exercise CMRI to measure and compare cardiac systolic and diastolic reserve. Aim 2 involves measuring and comparing amyloid-specific biomarkers in V122I TTR carriers without HF with samples matched non-carriers (both from Aim 1) and individuals with symptomatic V122I hATTR-CA from our clinical sites. These biomarkers detect and quantify different processes of TTR amyloidogenesis and include circulating TTR, retinol binding protein 4, TTR kinetic stability, and misfolded TTR oligomers. Sub-aim 2 will establish the role of these biomarkers to detect imaging evidence of subclinical hATTR-CA disease.

Permanent ventricular pacing may be complicated with ventricular dyssynchrony and subsequent pacing-induced cardiomyopathy. We hypothesized that left bundle branch area pacing may prevent the development of pacing-induced cardiomyopathy in patients with permanent atrial fibrillation requiring permanent ventricular pacing. Patients with permanent atrial arrhythmia with an indication of cardiac pacing and atrioventricular junction ablation will be prospectively enrolled. They will undergo the implantation of a single-chamber pacemaker with left bundle branch area pacing, and then atrioventricular junction ablation. They will be prospectively followed during 6 months.

This is a non-invasive/observational study in healthy and mild HF subjects utilizing clinical and ambulatory measurements to improve detection, monitoring, and management of HF risks.

Congenital cardiopathy are frequent malformations (1/100 birth). The progress of surgery permit a survival rate at the adult age of more than 90%. The long terms consequences must be taken in account and the nerodevelopmental disorders are in first place (intelectual deficiency, autism spectrum disorders, or attention disorders) and presents in 30 to 60% of the patients (Calmant, 2015). The impact can be important on the scolarity, the studies, the professional activity and finaly on the quality of life of the patients becomming adults. The identification of the risk factors on surgery period should permit to propose the most adapted follow-up to the specifics needs of each patients. On the scientific plans, the identification of early markers on brain dammage on EEG should permit to better apprehend the physiopathologic mecanisms involved.

In this study, the investigators evaluated the association between various measures of adiposity [BMI and waist circumference (WC)] and clinical outcomes in Asian patients with dilated cardimyopathy, using a nationwide population based cohort.

Sepsis is a life-threatening infection with increasing incidence, and its spectrum of disease can involve cardiac dysfunction, which further adds to mortality. Although cardiac involvement in sepsis has been classically attributed to systolic dysfunction, diastolic dysfunction is increasingly diagnosed due to new echocardiographic techniques and the conceptual evolution of diastolic dysfunction. Combining systolic and diastolic dysfunction assessment could lead to a better diagnosis of septic cardiac dysfunction. Furthermore, earlier forms of septic cardiac dysfunction could be more promptly recognized by measuring novel and less used parameters of diastolic dysfunction. We hypothesize that left atrium (LA) strain and isovolumetric relaxation time (IVRT) derived intervals could be new and earlier predictors of diastolic dysfunction in septic patients with a potential impact on clinical presentation and prognosis and that rare genetic variation associated with inherited cardiomyopathies could underline the risk and severity of sepsis-related myocardial dysfunction with potential impact on diagnosis and prognosis.

Fatigue and dyspnea that reduce exercise performance are common symptoms in patients with hypertrophic cardiomyopathy. Since the cause of this functional limitation has not yet been described, this study aims to evaluate the cardiopulmonary parameters measured at cardiopulmonary exercise test in combination with those obtained by non-invasive measurement of cardiac output by impedance (Physioflow) and echocardiography. These results will help to better define the mechanisms underlying limitation in these patients, also in relation to the degree of LVOT obstruction. The aim of the present study is to assess the cardiopulmonary response to exercise in patients with hypertrophic cardiomyopathy, based on the degree of LVOT obstruction, by adding non-invasive measurement of cardiac output by Physioflow and echocardiographic parameters to the cardiopulmonary exercise test parameters associated with stroke volume and cardiac output (ie. VO2/WR, O2pulse) Consecutive patients with a previous diagnosis of hypertrophic cardiomyopathy on optimised medical therapy will be enrolled to perform a cardiopulmonary exercise test with simultaneous measurement of cardiac output and an exercise echocardiogram for clinical routine.