Active clinical trials for "Heart Failure"

The purpose of this study is to determine whether neuromuscular electrical stimulation can improve exercise tolerance for patients with heart failure and continuous dobutamine use in a hospital.

Iron deficiency may contribute to exercise intolerance by altering mitochondrial oxidative capacity in skeletal muscle. Functional iron deficiency is common in heart failure patients, but the relationship to exercise intolerance and mitochondrial oxidative capacity is unknown. This is a pilot study to determine the feasibility of the use of specialized 31P-MRS and MRI techniques for measurement of skeletal muscle bioenergetics in patients with heart failure with and without functional iron deficiency.

The aim of this study is to investigate whether the objective measurement of fluid overload by bioimpedance analysis (Body Composition Monitor-BCM) in patient with acute decompensated heart failure would improve the diuretic therapy.

Cardiac resynchronisation therapy (CRT) is a specialised type of pacemaker used in patients with severe heart failure to improve symptoms and survival. Approximately one third of patients treated with CRT do not notice significant improvement in their symptoms and this may be due to inadequate co-ordination between the upper and lower chambers of the heart (atrioventricular dyssynchrony). The investigators propose a new method to achieve atrioventricular synchrony in CRT based on measurements of electrical conduction from within the heart. Patients referred for CRT implantation at Castle Hill Hospital are eligible to participate. During CRT implantation, additional measurements, will be recorded from within the heart. After implantation, device settings will be adjusted to either standard or electrophysiologically-optimised settings with cross-over at 4 months. The investigators hypothesis is that patients with optimised settings will derive additional benefit compared to patients with standard pacemaker-determined settings.

The primary objective of this study is to demonstrate the superiority of ivabradine over placebo in the reduction of cardiovascular mortality or hospitalisation for worsening heart failure in patients with moderate to severe symptoms of chronic heart failure, a reduced left ventricular ejection fraction and currently receiving recommended therapy for this disease.

The primary objective of this pilot trial is to determine whether inpatients presenting to the Emergency Department (ED) with symptoms suggestive of Acute Heart Failure (AHF), who receive supplemental oxygen adjusted at either a high (SpO2 range ≥96%) or low (SpO2 range 90-92%) oxygen saturation level, leads to greater reduction in N-terminal-proBNP (NT-proBNP) at 72 hours.

Cardiac resynchronization therapy (CRT) has been a valuable intervention for patients with systolic heart failure for over 15 years. Despite years of research, there is a still a 25-40% non-responder rate depending on the outcomes measured. CRT optimization is a term used to describe the act of individualizing the therapy (CRT programming) for an individual patient. This is not often performed, but when it is, echocardiography is utilized. Recent work of body surface mapping using a novel system called the ECG Belt has shown a relationship between measures of electrical dyssynchrony and acute and chronic heart pumping function. This study will compare outcomes of patients randomized to either echocardiographic or ECG Belt optimization of CRT devices.

The purpose of this study is to evaluate the application of Negative AV Hysteresis (NAVH) to improve electrical synchrony in MultiPoint Pacing (MPP) Cardiac Resynchronization Therapy (CRT) patients.

The purpose of this pilot study is to investigate the pharmacodynamic and pharmacokinetic parameters of a novel furosemide formulation administered subcutaneously as compared to oral furosemide.

The SYNSEQ study intends to assess the positive left ventricular dP/dt max achieved by MultiSpot LV pacing (either simultaneously or sequentially) in comparison to the response achieved by the current (standard) BiV pacing configuration in patients indicated/recommended for cardiac resynchronization therapy.