Active clinical trials for "Heart Failure"

The purpose of this study is to determine if patients in the HeartNet Ventricular Support System with optimal medical and device therapy arm (Treatment group) show statistically significant improvement compared to patients in the optimal medical and device therapy alone arm (Control group) after 6 months of follow-up.

To conduct a pilot study to evaluate the feasibility of a large randomized controlled trial (RCT) of metformin in patients with heart failure and type 2 diabetes and to generate initial morbidity and mortality estimates in this patient population. The primary hypothesis is that subjects with heart failure and type 2 diabetes who receive metformin will have a significant reduction in the combined endpoint of all-cause mortality and all-cause hospitalization as compared to subjects who receive placebo therapy.

Specific Aims The aims of this trial are to evaluate the safety and effectiveness of the DuraHeart™ LVAS in patients with advanced heart failure who require LVAS support as a bridge to cardiac transplantation. Study Population The patient population for this trial consists of patients with end stage heart failure awaiting cardiac transplantation. Patients must be listed for transplant with UNOS with status 1A or 1B. All patients who meet the eligibility criteria may be included in the study regardless of gender, race or ethnicity. Study Design This is a multi-center, prospective, single arm study in which the lower one-sided confidence interval exceeds the performance goal. Enrollment is expected to occur within an 18-month time period at up to 40 centers. All patients will be followed for all endpoints for 6 months while on DuraHeart™ LVAS support, or until cardiac transplantation or death, whichever occurs first. For those patients who remain on support after 180 days, survival and device reliability data will continue to be collected on a regular basis. If patients are transplanted, survival at day 30 post cardiac transplantation will also be assessed.

Mitral regurgitation (MR), also known as mitral insufficiency, is a condition in which the heart's mitral valve, located between two of the heart's main chambers, does not firmly shut, allowing blood to leak backwards within the heart. Improper functioning of the mitral valve disrupts the proper flow of blood through the body, resulting in shortness of breath and fatigue. When mild, MR may not pose a significant danger to a person's health, but severe MR may be associated with serious complications, such as heart failure, irregular heart rhythm, and high blood pressure. Although there are treatments for MR, including medication and surgery, more information is needed on the effectiveness of these treatments in people with significant MR. This study will compare the safety and effectiveness of corrective surgery added to optimal medical treatment (OMT) versus OMT alone in treating people with significant MR caused by an enlarged heart.

The study is designed to define the underlying vascular abnormalities present in patients with diastolic heart failure and test the effect of a therapy aimed at vascular abnormalities. This study is designed to investigate the effects of therapy with atorvastatin in subjects with diastolic heart failure to improve abnormalities of vascular and myocardial structure and function, with particular emphasis on arterial stiffness and endothelial dysfunction.

The DOT-HF trial is an international, prospective, multi-center, randomized, controlled trial.

The impact of nesiritide in CHF is unclear, but it is possible that systemic vasodilation leads to adverse consequences even if the direct renal effects are positive. Therefore, this study will look at the effects of direct intrarenal administration of nesiritide on GFR and RPF.

Heart failure is a condition in which the heart is unable to pump enough blood to the body's other organs. A heart transplant may be necessary for some individuals with end-stage heart failure. Left ventricular assist devices (LVADs) can assist the heart in pumping blood, and are commonly used until a donor heart becomes available. Bone marrow cells injected into the heart may improve heart function and may lead to earlier LVAD removal. The purpose of this study is to evaluate the safety and effectiveness of injected bone marrow cells in improving heart function in individuals with LVADs who are awaiting heart transplants.

This study was designed to determine whether COREG MR is more effective than TOPROL-XL in reducing microalbuminuria in type 2 diabetic or non-diabetic patients with high blood pressure and microalbuminuria.

The Medtronic InSync III Marquis Cardiac Resynchronization Therapy Defibrillator (CRT-D)-System (implantable cardioverter-defibrillator with biventricular stimulation for cardiac resynchronization) is equipped with the "Conducted-Atrial Fibrillation (AF)-Response-Algorithm (CAFR)". This algorithm is designed to maximize biventricular stimulation and thus the amount of cardiac resynchronization when atrial fibrillation occurs. The goal of the study is the evaluation of the effect of the CAFR in CRT-patients suffering from atrial fibrillation by quantification of the increase of biventricular pacing during atrial fibrillation caused by CAFR as well as the influence of the CAFR on the ventricular heart rate.