Active clinical trials for "Heart Failure"

Sleep Apnea (SA) is a disorder that causes pauses in breathing during sleep that expose the heart to oxygen deprivation. It is common in patients with heart failure (HF) where it is associated with increased risk of hospitalizations and death. It is not known however whether treating SA reduces these risks. This study is looking at whether a respiratory device known as Adaptive Servo Ventilation (ASV) can reduce the rate of cardiovascular hospitalizations and death in subjects with HF and SA. Study subjects will randomly receive either their regular medications OR their regular medications plus ASV. They will be followed for approximately 5 years and information relevant to their health will be collected and compared.

This is a pilot study comparing the effect of intra-coronary versus intramyocardial application of enriched CD133pos autologous bone marrow derived stem cells for improving left ventricular function in chronic ischemic cardiomyopathy.

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.

This study is designed to assess, relative to placebo, the effects on the evolution of exercise capacity and symptomatic status of the addition of iron treatment with FCM (ferric carboxymaltose) to the basic regimen of ambulatory patients with stable symptomatic chronic CHF (congestive heart failure) and iron deficiency.

Examination of CRT efficacy in patients with progressive heart failure and atrial fibrillation at the same time

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.

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 (HF) is a complex condition resulting from structural or functional heart diseases that impair the ability of the heart to fill with or pump out blood. The main manifestations of HF are shortness of breath and tiredness which may limit the ability to exercise or perform simple daily physical activities such as walking. Heart disease leading to HF is associated with reduced muscle mass and reduced strength and low blood levels of testosterone; a hormone normally produced by the human (male and female) body. Recent studies have shown improvements of symptoms and ability to exercise in patients with heart failure receiving testosterone. This is a placebo controlled study to determine the efficacy and safety of low dose testosterone (300 and 450 microgram/day) delivered by a transdermal system (patch) in women with significant HF.

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.