Active clinical trials for "Heart Failure"

The purpose of this study was to evaluate the effect of LCZ696 compared to valsartan in the reduction of cardiovascular death and heart failure(HF) hospitalizations in patients with HF with preserved ejection fraction.

The purpose of this study evaluate the effect of the method of administration of autologous bone marrow mononuclear cells for the duration of of functioning aorto-coronary bypass grafts in the surgical treatment of coronary heart disease, to assess the degree of effectiveness depending on the method of transplantation (intramyocardial, intracoronary, combined).

The main purpose of our project is to see if a 12-week program of Nordic walking is better than standard exercise therapy for increasing exercise capacity (measured by how far people can walk in 6 minutes) and increasing quality of life (measured by having people fill out two questionnaires). We will also see if Nordic walking: improves heart performance (measured by heart ultrasound); improves how active people are (measured by an activity monitor); increases aerobic fitness (measured by a treadmill test); improves body composition (measured by waist size); and reduces hormone levels in the blood.

This study will evaluate the PaceSafe Right Ventricular Autothreshold (RVAT) and Left Ventricular Autothreshold (LVAT) features for AUTOGEN Cardiac Resynchronization Therapy Defibrillator (CRT-D) devices.

Evaluate pro-BNP levels, oxygen consumption, functional class, and quality of life in patients with chronic heart failure after participating in an exercise program and compare them baseline and 2 months, with another group who underwent an educational program.

Nitrate-rich beetroot juice supplementation has demonstrated reduced oxygen consumption and submaximal exercise performance in healthy adults. Investigation for similar effects in patients with heart failure has not previously been conducted. This was a randomized, double-blind, placebo controlled trial. Following ingestion of the active agent or placebo, subjects with systolic heart failure underwent submaximal steady state exercise with gas exchange analysis followed thirty minutes later by a six minute walk test. Second testing sessions were performed ten days. There were no significant differences in the treatment and placebo arms in average oxygen consumption or six minute walk distance. In conclusion, in patients with heart failure who have ingested a single dose of nitrate-rich beetroot juice concentrate, there is no significant difference with regard to oxygen consumption during submaximal steady state exercise or six minute walk testing distance. Further study is warranted to determine the true efficacy of nitrate consumption in this population with adjustments in acute or chronic dosing, exercise duration, or intensity.

The purpose of this study is to evaluate the short term efficacy and safety of tolvaptan in subjects hospitalized for worsening heart failure who have volume overload and one of the following: renal insufficiency, or hyponatremia or inadequate response to diuretic therapy. The primary variable for assessing efficacy will be self-assessed 7-point dyspnea score at 8 and 16 hours.

Heart failure is a common condition with debilitating symptoms and a poor prognosis. Patients with heart failure have a massively overactive sympathetic nervous system which attempts to compensate for their poorly functioning heart. This ultimately has only detrimental effects. One of the principle mediators for this sympathetic response is found in the nerve cells in the kidneys. Whilst a significant proportion of medications used to treat heart failure act on these harmful pathways, none target the kidney sympathetic-nerve cells specifically. Additionally, because of their multiple sites of action these drugs all have side effects. A new procedure that has recently been developed for the treatment of high blood pressure is renal denervation. This involves inserting a small catheter through the femoral artery and passing it to the kidney artery under x-ray guidance. From there, using radiofrequency waves, the sympathetic nerves within the kidney can be destroyed. The investigators anticipate that this procedure will have a significant positive effect on patients with heart failure and aim to perform a pilot safety study on 7 individuals with advanced heart failure to assess its safety and effectiveness. The investigators hypothesise that renal artery denervation will lead to significant clinical and biochemical improvements in patients with marked heart failure.

The aim of the study is to determine safety, tolerability and feasibility of unilateral and bilateral carotid body excision in patients with systolic heart failure and peripheral chemoreceptor hypersensitivity.

Heart failure (cardiomyopathy) is a chronic condition in which the heart fails to function as a pump to move blood around the body. This sets up a complex physiologic response to compensate, which include activation of many hormonal mechanisms which result in fluid accumulation. In recent years, medications to block the hormonal response to heart failure are given as standard drugs, and these include ACE inhibitors and beta blockers. Mortality is reduced with these medications, as well as symptoms improved. Other medications are also used in heart failure, for which a clear-cut benefit has not been demonstrated. Statins, also called HMG CoA reductase inhibitors, are used to reduce cholesterol levels and can help to prevent heart failure by preventing heart attacks. They have been used in heart failure that is not caused by heart attacks in the belief that they had "pleiotropic" effects, meaning that they had beneficial effects in heart failure separate from the reduction in cholesterol. However large trials in heart failure have demonstrated that statins do not increase survival compared with placebo. There is no evidence to recommend their routine use in established heart failure caused by either heart attacks or genetics. The investigators propose that the use of statins in heart failure is unnecessary and could be stopped. The importance of finding evidence to cease unproven medications in heart failure cannot be understated. Patients with heart failure take an average of six prescription medications each day. Each medication has side effects and the interactions of all the drugs together are unknown. Statins are the commonest reason for side effects in patients with heart failure, causing muscle pains and gastrointestinal upset. In this study, the investigators plan to withdraw statins from patients with stable heart failure in a closely monitored environment and watch for the effect of this on heart failure and on how they feel generally.