View clinical trials related to Cardiomyopathies.
Filter by:Left ventricular obstruction is an invalidating complication of hypertrophic cardiomyopathies (HCM), and endothelial dysfunction has also been observed in these pathologies. However, the relation between obstruction and endothelial and venous dysfunctions has not been previously studied. The main objective is to investigate the relations between endothelial and venous dysfunctions and symptomatic left ventricular outflow-tract obstruction in HCM patients.
Risk prediction in in inherited heart rhythm conditions that may cause sudden cardiac arrest or death is difficult. Sometimes the risks may be low but the loss of life in an otherwise healthy young individual is catastrophic. Clinicians often treat to the extreme to prevent this and so often those at unknown risk for a serious cardiac event are treated with an implanted cardioverter defibrillator (ICD) to protect against sudden death even though the risk is low or unknown. ICDs them selves are not without adverse events such as needing battery replacements, mechanical complications, inappropriate shocks and body image and self esteem issues for the patient. This study will use an inject able monitor that is less invasive to monitor inherited heart rhythm patients long term to help gather long term heart rhythm data (3 years) on patients with an inherited heart rhythm that will help to detect symptoms of dangerous heart rhythms so that the appropriate care can be provided.
The purpose of the study is to investigate the potential correlations of global longitudinal strain and peak left atrial strain, measured by speckle tracking echocardiography with the severity of hypertrophic cardiomyopathy and the risk for arrhythmias. Specifically the investigational questions are: 1. Is there a correlation between myocardial deformation parameters of the left heart chambers with other important ultrasound parameters (eg maximal wall thickness, presence of subaortic obstruction, etc.) in patients with hypertrophic cardiomyopathy? 2. Is there a correlation between myocardial deformation parameters of the left heart chambers and the symptomatology or functional capacity of patients with hypertrophic cardiomyopathy? 3. Is there a correlation between the myocardial deformation parameters of the left heart chambers and the exercise capacity, as evidenced by the cardiopulmonary exercise test, in patients with hypertrophic cardiomyopathy? 4. Is there a correlation between myocardial deformation parameters of the left heart chambers with the risk of ventricular or supraventricular arrhythmias in patients with hypertrophic cardiomyopathy? 5. Is there a correlation between myocardial deformation parameters of the left heart chambers and risk factors for sudden death?
The purpose of this research study is to understand more about various heart rhythms (electrical problems) in persons with hypertrophic cardiomyopathy with and without sleep apnea.
A total of 130 patients with liver cirrhosis who fulfill the criteria of the study, and who have been found to have left ventricular diastolic dysfunction on a screening 2D echocardiography, will then be randomized by Block randomization technique, to two arms in a ratio 1:1(Group A) will receive carvedilol+ Ivabradine targeted therapy for heart rate reduction while Group B will receive Carvedilol alone; and the dosage of drug in the treatment arm will be titrated every week to achieve target heart rate of 50-60/ minute. Patients in the treatment arms, who are unable to tolerate carvedilol due to hypotension episodes, will be offered ivabradine alone to allow achievement of targeted heart rate reduction. All patients will be evaluated at 0,6, and 12 months. The end points will be clinical events, cardiac function improvement, renal function, and mortality.
Secondary Data Collection : To confirm the safety and effectiveness profiles under the actual medical practice of Vyndaqel in Japan. This study is conducted in accordance with the protocol even when Vynmac is used, and information the use of Vynmac during the observation period is also collected.
Chagas disease (CD) could be acquired by contact with the vector, transplacentally and by blood transfusion. The duration and clinical presentation of the initial acute phase of the infection may be variable, but the majority of patients are asymptomatic. The acute phase usually lasts a few months and, if untreated, the acute phase goes on to develop a chronic infection. The chronic phase usually continues for the subject's lifetime, and 30% to 40% of patients will progress to the chronic phase with a cardiac, digestive, neurological, or mixed form at 15 to 30 years after the initial infection. Progressive heart failure and sudden death due to ventricular arrhythmias are the main causes of death in patients with chronic Chagas heart disease. Objective: To evaluate cardiac involvement in children after pharmacological treatment for Chagas disease. Methods: Open exploratory study, blind for cardiological evaluation. Population: children treated for Chagas disease with at least 6 years after-treatment parasitological (T.cruzi qPCR), serological (IHA, EIA) and cardiological follow-up. Non-infected subjects were included as a control group for final cardiological evaluation. Treatment: benznidazole or nifurtimox, standard dose, for 60 days. Blood samples were collected at diagnosis, end-of-treatment and every 6-12 months thereafter. Electrocardiogram (ECG) was performed at diagnosis and every year after treatment. In this cohort, 24 hours ECG (Holter) and Speckle-tracking strain echocardiography study were performed at the end of follow-up for this study.
BACKGROUND About 1/4 of patients with hypertrophic cardiomyopathy (HCM) seem to develop atrial fibrillation (AF) over their life-span. Typically, symptoms of heart failure and especially shortness of breath get much worse once AF is present. Catheter ablation of AF in HCM has been proposed by several centres, but outcomes are much worse than in non-HCM AF. Accurate mapping of the arrhythmia is crucial with regard to improving the procedural outcome. Interestingly, intracardiac mapping during AF has demonstrated very long average cycle length during ongoing AF in HCM which should make identification of the critical re-entry/rotors much easier using dipole cardiac mapping (Acutus mapping system, Acutus Medical, CA, USA). POPULATION and PURPOSE This is a pilot trial recruiting a total of 20 patients with HCM and AF (paroxysmal or persistent with <12 months duration time in persistent AF) eligible for catheter ablation, without other significant structural heart disease Primary endpoints Safety: - Absence of acute adverse events due to the use of ACUTUS mapping system during AF ablation - Evidence of chronic adverse events due to the use of ACUTUS mapping system guided catheter ablation during the 12 months F/U period - Safety endpoint of the entire mapping and ablation strategy Efficacy: - Assessment on efficacy of ACUTUS mapping system guided AF ablation in HCM patients using a double-arm study design - RF time to termination of AF to SR Secondary endpoints - RF time to termination of AF to atrial tachycardia (AT) - Freedom from AF/flutter/tachycardia (> 30 sec) at the end of the 12 months follow up (F/U) period - Time to first recurrence of AF/flutter/tachycardia (> 30 sec) - Freedom of AF/flutter/tachycardia on previously failed anti-arrhythmic medication Ablation procedure First 10 patients (group 1): ablation will be carried out after acquisition of a left atrium (LA) and right atrium (RA) dipole map at baseline, pre and post administration of Adenosine IV. Then pulmonary vein isolation (PVI) as a first step and subsequent remap and ablation of all patterns of interest in the LA until restoration of sinus rhythm (SR) or decision to proceed with direct current cardioversion (DCCV, 360J). Second 10 patients (group 2): after the acquisition of a dipole map of LA and RA at baseline (pre and post Adenosine IV administration), ablation of all identified areas of interest (API) will be performed, followed by remap and finally PVI +/- DCCV. For all patients: final step will be the deployment of a RA isthmus line and demonstration of bidirectional block. FOLLOW UP Patients will be followed up at 3, 6, and 12 months.
This is a multicenter, randomized, placebo-controlled, 2-part study to evaluate the safety and efficacy of AT-001 in adult patients (N=675) with Diabetic Cardiomyopathy at high risk of progression to overt heart failure.
A prospective, longitudinal, non-comparator, non-randomized observational cohort study to assess the quality of life in adult patients affected by hypertrophic cardiomyopathy and thoracic aortic dilatations who are not amenable to surgery, as well as those affected radiation-induced cardiac disease caused by radiation therapy.