Active clinical trials for "Cardiomyopathies"

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 negative MTWA test, they will be less 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.

Conventional coronary angiography is the recommended procedure in detection of coronary stenosis in patients with idiopathic cardiomyopathy. The aim of this prospective study is to assess diagnostic accuracy of multislice spiral computed tomography coronary angiography in patients with idiopathic cardiomyopathy in sinus rhythm, compared to conventional coronary angiography.

This study is being done to determine if Ranolazine treatment improves coronary microcirculation function among patients with coronary microcirculation dysfunction. We are also looking to learn if symptomatic improvement of chest pain during treatment with Ranalozine is related to improved coronary microcirculation function.

Despite the recent advances in medical and surgical treatment, heart failure resulting from ischemic cardiomyopathy (ICM) remains the leading cause of cardiovascular mortality. Ischemic dilated cardiomyopathy(ICM) is defined as abnormally enlarged left ventricular (LV) cavity with documented poor LV function as a result of severe coronary artery disease (CAD). LV remodelling which is inevitable after an infarct has been postulated to contribute largely to the poor outcome of patients with ICM, therefore prevention of LV remodelling is the goal for the treatment in patients with severe CAD. Cell therapy represents a novel therapeutic strategy for treating cardiac diseases including severe CAD and heart failure. A type of stem cells known as mesenchymal stem cells(MSCs)can be isolated from bone marrow.This study aims to test the differentiation potential and therapeutic capacity of MSC from severe CAD patients after intracoronary implantation in an ischemic myocardial environment in Malaysian population.

The objective is to determine whether nebivolol, a beta-blockade drug, can prevent the development of heart disease in patients with Duchenne muscular dystrophy aged 10 to 15 year-old.

The purpose of the study is to perform endocardial catheter CRyo-Ablation to relieve the LVOT obstruction in patients with Hypertrophic Obstructive Cardiomyopathy. The investigators hypothesize that the investigators will be able to reduce > 50% of the initial LVOT gradient. This will be considered as a successful procedure.

Hypertrophic cardiomyopathy (HCM) is very common. The thickened heart muscle can disrupt the normal functioning of the heart's electrical system, resulting in fast or irregular heartbeats. Today, there are no reliable means to identify HCM patients at risk of sudden death. The CardioInsight™ has recently been developed by Medtronic for non-invasive advanced cardiac mapping system. The CardioInsight™ Noninvasive 3D Mapping System is a non-invasive mapping system that collects chest ECG signals and combines these signals with CT scan data to produce and display simultaneous, bi-atrial and biventricular, 3-D cardiac maps. It is a monocentric, prospective, comparative and analytical study. 20 HCM patients will be recruited in the National Reference Center for inherited cardiac diseases of Lyon. The 3D-propagation maps of 10 well phenotyped and genotyped HCM patients with previous VF (ventricular fibrillation) will be compared to 10 HCM patients without previous VF. After consent signed, Holter ECG, scanner and CardioInsightTM 3D_ECG mapping will be planned in the month following the inclusion. 12-lead ECG, 24h holter ECG, cardiac scanner will be performed as standard procedure of each center in the current health care of the patient. The widespread screening of HCM patients with 3D high-density noninvasive mapping should improve the risk-benefit ratio of implantable defibrillator therapy. It is expected that more patients at risk will benefit from this device.

Dilated cardiomyopathy (DCM) causes significant morbidity and mortality and is the third most common cause of heart failure and the most frequent reason for heart transplantation. The etiology of dilated cardiomyopathy(DCM) is complex. There is a growing body of literature suggesting that the humoral immune system activation and autoantibodies against myocardial generation play an important role in the progression of DCM. At present immunoadsorption technology has been successfully applied in autoimmune antibody removal treatment of a variety of diseases. And some applications of immunoadsorption(IA) in patients with DCM showed that immunoadsorption(IA) can indeed reduce the autoantibodies, improve symptoms and prognosis, but additional research is needed to identify indications and instruments for the IA treatment of DCM.

The aim of the study is to find better and more specific non-invasive methods to diagnose and stage cardiac sarcoidosis with the use of advanced imaging modalities, simultaneous 3T MRI and PET. Cardiac sarcoidosis is a disease of possibly fatal outcome in young people. The use of a combined PET/MRI system with 18F-FDG and a new inflammation-tracer (18F-GE180) can become a future game changer. Sarcoid induced focal inflammation in myocardium should show high 18F-GE180 uptake. 18F-GE180 PET scans will give reliable data about inflammatory sarcoidosis activity in the myocardium. 18F-GE180 PET is expected to improve diagnostic accuracy compared to 18F-FDG-PET and/or contrast enhanced MRI.

Coronary artery disease (CAD, cholesterol plaque buildup in the heart arteries) is the most common cause of left ventricular systolic dysfunction (weakening of the heart muscle). The standard test to find coronary artery disease is coronary angiography. This test is highly accurate but is invasive and carries a small risk of complications. This study investigates ultrasound of the carotid (neck) arteries as a screening test for severe coronary artery disease as a cause of left ventricular systolic dysfunction. It is hypothesized that carotid ultrasound will have excellent negative predictive value for severe CAD.