Active clinical trials for "Heart Failure"

The present study will analyze and compare the chronic effects of aerobic exercise in subjects with systolic heart failure on telomere length.

The aims of this proposal are to investigate whether external enhanced counterpulsation (EECP) can facilitate heart failure (HF) patient weaning from intravenous infusion of positive inotropic agent, and thus decrease the length of hospital stay. The major adverse cardiovascular event (MACE) rate, including death and hospitalization for heart failure, will be monitored for 6 months if patients can be released from hospital. Exercise tolerance (6-minute walking distance) and plasma brain natriuretic peptide (BNP) level will be checked at the end of 6th month.

This is a prospective, single arm, early feasibility study (EFS) designed to evaluate the safety and device performance of The RenalGuard System in the management of patients admitted with signs and symptoms of congestive heart failure who require diuresis for the treatment of volume overload.

The purpose of the study is to evaluate whether the administration of iron to patients with heart failure and preserved ejection fraction results in an improvement of symptoms and functional class, in addition to evaluating whether oral iron is equivalent to intravenous iron to achieve this improvement.

Half of heart failure patients have preserved ejection fraction (HFpEF). Like patients with reduced ejection fraction (HFrEF), HFpEF patients suffer from exercise intolerance (low VO2max), which reduces physical function, quality of life, and survival. Strikingly, there is no medication proven to increase survival for HFpEF patients. Whereas exercise intolerance in HFrEF patients is the result of cardiovascular limitations, physical dysfunction in HFpEF patients is largely the result of peripheral abnormalities in skeletal muscle. Indeed, research in HFpEF patients identified that physical function and VO2peak are directly related to leg lean mass, and drugs focused on improving cardiovascular function have failed to improve VO2peak. Unfortunately, no therapy has been identified for this population that can concurrently improve cardiovascular and muscle health. The need for improved muscle therapies is reinforced by the fact that HFpEF patients are commonly older adults who are predisposed to muscle wasting. Strategic essential amino acid (EAA) ingestion has been shown to improve the adaptive response of muscle to exercise. Therefore, the investigators will determine, in HFpEF patients, the extent to which ingesting a strategic mixture of EAAs during an acute aerobic exercise training program enhances the response to this exercise strategy.

In 200 patients with documented systolic heart failure give supplementation with vitamin D in those with a 25-OH- vitamin D < 50nmol/L - or placebo. In those with a vitamin D level <25nmol/L a substitution of 2400IU will be given, and in those with a vitamin D level 25-50nmol/L a substitution of 1600IU will be given. Intervention time 12 months. Biomarkers of heart function, quality of life, and hospitalisation will be analysed.

Heart failure is one of the major causes of hospitalization in Brazil and worldwide. Recent studies attempt to identify readmission and prognostic markers at the time of discharge from these patients. The reassessment and possibility of early therapeutic adjustment may be relevant in this context. Therefore, the prospective and randomized comparative use of early re-evaluation in Hospital-day versus non-intervention group has not yet been described. The objective of this study was to evaluate the impact on the re-hospitalization rate in 30 days of the early re-evaluation of the patients in the day-hospital versus the non-intervention group in heart failure. For this, a unicentric, randomized and prospective study will be performed, in which the Hospital-Day strategy is performed versus no intervention in a comparative manner. Hospital data (test results, medical outcomes, complications) of patients will be analyzed for safety and effectiveness. The hypothesis of this study is that the Hospital-Day strategy is superior to the non-intervention strategy and causes fewer rehospitalizations within 30 days.

Introduction: Recent studies have suggested that the use of acetazolamide may assist in the vol- ume management of patients with decompensated heart failure (HF). However, prospective and randomized comparison in patients with HF and optimized diuretic therapy has not been described. Objective: The aim of this study was to evaluate the effectiveness and safety of the use of acetazolamide versus placebo in volume control in patients with decompensated HF. Methodology: For this, a unicentric, randomized, double blind and prospective study will be performed in a comparative manner. Hospital data (test results, medical outcomes, drug dose, complications) of patients will be analyzed for safety and effectiveness. Expected results: The use of acetazolamide as an adjuvant treatment is superior to the standard strategy for volume control in patients with decompensated HF.

To investigate the safety and efficacy of a novel atrial flow regulator (AFR) device in patients with heart failure and preserved ejection fraction.

Heart failure (HF) is the leading cause of death in US. It is associated with abnormal vascular function termed endothelial dysfunction. It is also associated with increased stress on the blood vessels and high levels of inflammation. Vagus nerve stimulation can help improve inflammation, vascular function and vascular stress. The investigator has recently completed a study showing that 1 hour of noninvasive vagus stimulation can improve vascular health. However, it is unknown if 4 weeks of stimulation will be beneficial in systolic heart failure. The purpose of this study is to determine if transcutaneous vagal stimulation (TVS) will lead to improvement in the function of the inner lining of participants' arteries, memory, and in the levels of certain chemical markers of arterial function in the blood. Participants will be randomized to receive either TVS or a sham stimulation and undergo 4 weeks of stimulation. Vascular function will be assessed by several non-invasive measurements, including Flow Mediate Dilation (FMD), Pulse Wave Analysis (PWA), EndoPAT, and Laser Speckle Contrast Imaging (LSCI). Participants' memory will also be measured through electronic assessments and blood will be collected and analyzed for arterial function chemical markers.