Active clinical trials for "Heart Failure"

BACKGROUND Beta-blockers improve left ventricular (LV) systolic function and prognosis in patients with chronic heart failure. Both carvedilol and nebivolol have hemodynamic and clinical benefits in chronic heart failure (CHF), but it is unknown whether their pleiotropic properties may play a role in different subgroups of patients with CHF. OBJECTIVE: To compare the effects of nebivolol and carvedilol on LV function and clinical outcome in patients with chronic heart failure and reduced LV systolic function. METHODS: 160 hypertensive CHF patients, LV ejection fraction (EF) 40% and in New York Heart Association (NYHA) functional class II or III were randomly assigned to receive carvedilol or nebivolol therapy for 24 months. At baseline and after 24 months of treatment, all patients underwent clinical evaluation: echocardiogram and 6-minute walking test.

The purpose of this prospective, non-randomized, single-arm feasibility study is to evaluate safety and feasibility of the iCoapsys System in patients with functional mitral valve insufficiency caused by annular dilation and/or papillary muscle displacement.

To determine the effects of chronic sertraline treatment on brachial artery flow-mediated dilation in patients with chronic heart failure and depression

The purpose of this study is to evaluate the safety and effectiveness of LVADs in providing long-term circulatory support for patients who have chronic stage D heart failure and are ineligible for a heart transplant. This is a multi-center, prospective, randomized, controlled clinical trial, which is comprised of two independent modules.

Heart failure is a frequent disease in Denmark, and it is associated with very high mortality. Around 60,000 people in Denmark have heart failure, and there is about 11,000 hospitalizations every year due to this disease. From the time of diagnosis, patients survive an average of 4-5 years. A critical illness mechanism in heart failure is that these patients have high blood levels of catecholamines; epinephrine and norepinephrine, which is stress hormones from the sympathetic nervous system. Standard treatment of heart failure is with the two medical preparations betablockers and ACE-inhibitors. It is not known what effect betablocker-treatment have on blood concentration of epinephrine and norepinephrine. It is the purpose of this study, to investigate the effect of Selo-Zok ® (metoprolol) on the blood concentration of epinephrine and norepinephrine. This is done by creating a stress condition for the body, in this case with the bicycle test, while doing blood samples to determine the concentration of catecholamines. This will be done by 1-week treatment of tablet Selo-Zok ® followed by 1-week treatment of placebo (a substance with no medical effect). Blood samples will be taken to determine small changes in inheritance material (DNA) in the form of point mutations also called single nucleotide polymorphisms, since these changes can affect how we respond to metoprolol treatment.

The investigators will evaluate the effects of an exercise program (walking on a treadmill) on the physical performance, the cardiorespiratory function, the proclivity to heart arrhythmias and the quality of life of patients with severely impaired left ventricular function and a bi-ventricular resynchronization pacemaker.

The aim of this study is to compare the effects of high-dose furosemide versus low-dose furosemide combined with low-dose dopamine on diuresis, renal function, electrolyte balance, and 60-day post-discharge outcomes in patients hospitalized with acute decompensated heart failure.

The purpose of the OMNI study is to characterize therapy and diagnostic utilization in study participants implanted with study devices and to describe Implantable Cardioverter Defibrillator(ICD)therapy utilization for life threatening arrhythmias in primary and secondary prevention study participants. This study will assess therapies in Medtronic pacemaker, defibrillator, and cardiac resynchronization therapy devices. The first therapy is for reducing unnecessary pacing in pacemaker patients. The second therapy provides pacing therapy in an attempt to stop fast or life threatening ventricular arrhythmias in lieu of delivering a defibrillation shock. The third therapy is a diagnostic measurement of a patient's fluid status and provides the physician information on the patient's heart failure status. The study will also assess the time to a patient's first defibrillation shock and will verify that the shock was for a fast or life threatening ventricular rhythm.

This is a two-center, randomised, single-blind (physician), prospective, controlled study to assess the acute (8 weeks) and chronic (16 weeks) effects of intravenous (IV) iron sucrose supplementation in anaemic and non-anaemic iron deficient patients with chronic heart failure (CHF). The hypotheses are: Treatment of anaemic and non-anaemic iron-deficient CHF patients with IV iron sucrose improves exercise capacity as measured by peak VO2. IV iron sucrose is safe and well tolerated in subjects with moderate to severe CHF.

In today's world of advanced surgery, children born with congenital heart disease (CHD) are surviving into adulthood. However, the surgical procedures these children undergo do not cure the underlying problem and this these children develop other heart problems later in life. Heart failure is the one of the most common heart problems effecting these patients. This heart failure can be seen in both lower pumping chambers of the heart, however, sometimes only one side of the heart is affected. Since there are several congenital heart defects that are now seen in the adult population, an understanding of what causes heart failure in this patient population can help physicians develop better treatments for this condition. The goal of this study is to review the medical records of 350 adult patients with congenital heart disease that has developed heart failure. During this review, we plan to collect information regarding the various treatments utilized in these patients and to determine if there are any common elements regarding the development of heart failure in adult patients with CHD.