Active clinical trials for "Cardiomyopathies"

Objective of the study: to evaluate whether edge-to-edge technique improves clinical and hemodynamic results in patients scheduled to septal myectomy for severely symptomatic hypertrophic obstructive cardiomyopathy.

This study will randomize cross-over periods of 6 months of right ventricular pacing and His bundle pacing in patients with baseline left ventricular ejection fraction (LVEF)>40%. The primary outcome measure is LVEF.

The purpose of this study is to determine whether the application of the extended myoectomy in patients with obstruction of the left ventricular output more efficient than standard myoectomy by Morrow.

The main objective of this study is to assess if it is possible, at the end of endocardial voltage mapping, to accurately collect intact cardiomyocytes and to isolate high quality DNA allowing molecular testing of selected genes involved in arrhythmogenic right ventricular cardiomyopathy/dysplasia.

The diagnosis of Arrhythmogenic right ventricular cardiomyopathy can be difficult. The 80 lead ECG may increase the specificity and sensitivity in diagnosing this potentially life threatening inherited cardiac condition. This pilot would form the basis of a much larger clinical trial to test the utility of this novel diagnostic tool.

The purpose of this study is to evaluate the benefit of the optimal pacing configuration, including the possibility of biventricular or left ventricular pacing, in hypertrophic obstructive cardiomyopathy patients.

The potential clinical implications of this study are to optimise the selection of a population at risk for developing a diabetic cardiomyopathy among diabetic patients in order to develop early therapeutic strategies to prevent the left ventricular remodelling. Therefore, the originality of this project is to hypothesize that : Diabetes mellitus is often associated with a premature aging syndrome Cellular senescence may potentiate the mechanisms that are involved in decreasing myocardial contractility in DM and, DM associated to premature aging may increase the risk of developing a cardiomyopathy Thus, the modulation of telomerase activity and the control of telomere length, together with the attenuation of the formation of reactive oxygen species, might represent important new targets in order to develop therapeutic tools in prevention of diabetic cardiomyopathy.

The ABCD clinical study is designed to determine if a T-Wave Alternans (TWA) test is equivalent to an Electrophysiology Study (EPS) in predicting life-threatening heart rhythms in patients with ischemic heart disease, left ventricular dysfunction, and non-sustained tachycardia. Patients undergo both the TWA test and EP study and receive an Implantable Cardioverter Defibrillator (ICD)if either of the tests show the patient is at risk. The patient is then followed for 2 years. The incidence of a ventricular tachyarrhythmia events and total mortality are to be evaluated over the duration of the study.

The purpose of the study is to determine the usefulness of Microvolt T Wave Alternans (MTWA) testing of patients that have had a heart attack and have decreased pumping ability of the lower chamber of their heart. MTWA testing is a non-invasive test used to detect the likelihood of developing abnormally fast rhythms in the lower chambers of the heart. The objective of the study is to prove that if a patient has a positive MTWA test, they will be more likely to develop abnormally fast and dangerous rhythms in the lower chambers of the heart. The results of the study will help doctors to determine which patients would benefit the most from having an Implantable Cardioverter Defibrillator (ICD) implanted.

There is a high correlation between scar areas identified by contrast-enhanced ICE and scar areas identified by conventional electroanatomic mapping. Therefore, the investigators will assess the utility of contrast-enhanced ICE to identify and localize myocardial scar real-time during VT ablation procedures.