View clinical trials related to Cardiomyopathies.
Filter by: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.
Chronic viral cardiomyopathy is a disease where the cardiac muscle is attacked by a virus and this may result in a reduction in the output of the heart (pump function) thereby causing complaints such as chest pain, shortness of breath and palpitations. Betaferon (interferon beta-1b) is marketed for the treatment of Multiple Sclerosis already, but until now, it has not been proven whether it is also effective in patients with chronic viral myocardial disease. This study will be conducted to examine the efficacy and safety of Betaferon in patients with this disease. The aim of the treatment is to eliminate the virus from the heart so that the heart function and clinical status can gradually improve.
The purpose of this study was to evaluate the benefit of biventricular pacing in patients with heart failure who were receiving optimal pharmacological therapy, and who were either with or without an ICD indication
This prospective study will evaluate in patients, fulfilling implant criteria for Cardiac Resynchronisation Therapy (CRT) implant, the optimal atrial contribution to the resynchronised ventricles in the event of right atrial pacing.
Patients hospitalized for treatment of decompensated heart failure (CHF) are at risk for prolonged length of stay (LOS) and frequent readmissions. Renal dysfunction and diuretic resistance contribute to this risk, particularly if renal dysfunction worsens during CHF treatment. Brain natriuretic peptide (BNP) is a hormone of myocardial cell origin with well-defined physiological effects which include arterial and venous vasodilation, suppression of adverse neurohumoral systems and favorable effects on renal hemodynamics and sodium excretion. Recombinant human BNP (Natrecor) is approved by the FDA for treatment of decompensated CHF as it has been demonstrated to lower filling pressures and improve symptoms. While clinical trials and the FDA support the use of BNP as adjuvant therapy in decompensated CHF, the extent of its efficacy in improving non-hemodynamic CHF parameters has not been fully defined. The objective of this clinical practice protocol is to determine whether use of BNP in addition to standard therapy, will preserve renal function and facilitate diuresis in patients with CHF and mild-moderate renal impairment (creatinine clearance > 20 but < 60 ml/min) as compared to standard therapy alone. Patients admitted to the Mayo Heart Failure Service who meet entrance criteria will be randomized to standard clinical practice with or without a 48 hour infusion of BNP. The primary endpoints will be indices of renal function and diuretic response at 1, 2 and 3 days and at discharge. Secondary endpoints will be neurohumoral function, LOS and 30-day readmission rate.
This is a retrospective review of the data available on patients and their family members with HCM and prospective follow-up of this cohort for clinical outcome and diagnostic studies. Genetic samples are being examined in this cohort to determine whether certain to determine whether certain beta-AR polymorphisms as well as other common genetic polymorphisms are associated with different morphological features, such as LVH in patients with HCM and whether these polymorphisms influence the clinical course and outcome in patients with HCM. For that purpose, we will build a database with clinical information including serial echocardiographic measurements for patients with HCM that have regular follow up and test them for beta-AR polymorphisms as well as other common genetic polymorphisms and other known cardiac-related polymorphisms that can potentially contribute to the morphologic differences seen in patients with HCM.
We are studying the genetics of human cardiovascular and neuromuscular disease. There are many different genetic regions that have been associated with the development of cardiomyopathy. An equal number of genetic regions have been associated with muscular dystrophy and there is overlap because some of the identical genes, when mutated, produce both cardiomyopathy and muscular dystrophy. We are working to identify genes and gene mutations associated with cardiomyopathy, arrhythmias and muscular dystrophy. We propose to screen these samples for mutations in genes known to be involved in these disorders.
The purpose of this study is to determine whether a larger dose of the aldosterone antagonist spironolactone combined with a lower dose of an ACE inhibitor is more effective in reverse left ventricular remodeling in severe congestive heart failure in patients with nonischemic cardiomyopathy.
There is increasing interest in myocardial abnormalities following central nervous system events, such as subarachnoid hemorrhage (SAH). These cardiac abnormalities include ECG changes, decreased cardiac output, decreased blood pressure, specific cardiac enzyme elevations, and segmental wall motion abnormalities (SWMA). Interestingly, wall motion abnormalities and ECG changes have shown to be reversible, and therefore the dysfunction has been described as neurogenic myocardial stunning. The pathophysiology of cardiac dysfunction following SAH has not yet been fully elucidated. Many reports (mainly case reports) have been published, but so far no study has investigated the frequency of these abnormalities in a prospective manner, have correlated the occurrence of the different cardiac abnormalities, and have assessed which clinical variables can predict cardiac dysfunction. And only a limited number of studies have related neurological outcome with cardiac dysfunction.
This observational study will provide data (variations in ventricular size and function) that are essential to designing and conducting clinical trials. In addition, the study will evaluate intra- and inter-study variability seen in echocardiography.