Active clinical trials for "Ventricular Dysfunction, Left"

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.

The aim is to provide evidence of the long-term benefits of personalised pacemaker programming on heart function and battery longevity. This will be achieved by showing in a single centre, phase II, double-blind, randomised, placebo-controlled trial that reducing the amount of pacemaker beats to a minimum reverses these changes and extends battery life.

To assess a new drug, BAY94-8862, given orally at different doses, to evaluate whether it was safe and can help the well-being of patients with worsening chronic heart failure and either type II diabetes with or without chronic kidney disease or kidney disease alone. These treatment doses were compared to eplerenone, another marketed drug approved to treat heart failure.

The aim of this study is to test whether ivabradine is able to reduce cardiovascular events when given to patients with coronary artery disease and impaired heart function.

Among adult individuals with type 2 diabetes mellitus and at risk for heart failure with impaired relaxation of the heart mildly reduced kidney filtration function (Type 4 cardiorenal syndrome) this trial will evaluate the quantitative impact of 38 weeks of treatment with exenatide extended-release injections versus placebo. on a cardiac biomarker blood test score, cardiac fibrosis seen on magnetic resonance scanning, cardiac strain identified by ultrasonography and strain rate imaging, and a kidney urine biomarker score.

To explore if AZD1305 compromises left ventricular performance in patients with left ventricular dysfunction

Study to evaluate if macitentan is safe and tolerable enough to be used for treatment of subjects with combined pre- and post-capillary pulmonary hypertension (CpcPH) due to left ventricular dysfunction.

This is a prospective, multi-center cohort study of patients with a history of coronary artery disease (CAD) and documentation of either a prior myocardial infarction (MI) or mild to moderate left ventricular dysfunction (LVEF 35-50%). The primary objective of this study is to determine whether biologic markers and ECGs can be utilized to advance SCD risk prediction in patients with CHD and LVEF>30-35%. The overarching goal of the study is to identify a series of markers that alone or in combination specifically predict risk of arrhythmic death as compared to other causes of mortality among this at risk population of coronary heart disease (CHD) patients with preserved left ventricular ejection fraction (LVEF> 30-35%). If biologic or ECG markers are identified that can specifically predict risk of ventricular arrhythmias, then these markers may serve as relatively inexpensive methods to identify those at risk. The public health impact of identifying markers could be quite substantial, leading to more efficient utilization of ICDs and advances in our understanding of mechanisms underlying SCD.

Sildenafil (Viagra) is known to reduce pulmonary hypertension. Heart failure patients also have pulmonary hypertension and several recent reports have shown that sildenafil leads to an improvement in their exercise capacity. In these studies sildenafil caused a reduction in the pulmonary and systemic vascular resistances, improved pulmonary gas diffusion and perhaps increased cardiac output. It is uncertain if left ventricular filling pressures are reduced and whether there is improvement in left ventricular relaxation. The investigators hypothesize that in heart failure patients the improvement in exercise capacity associated with sildenafil is related to a significant reduction in left ventricular filling pressures. The investigators propose to study 20 patients with stable but moderately symptomatic heart failure. The study design is a randomized cross-over trial of the administration of a single dose of sildenafil 50 mg or a matching placebo. Exercise capacity will be determined before and after the oral administration of sildenafil 50 mg or placebo. Left ventricular filling pressures will be assessed by Doppler echocardiography and the serum level of B-type natriuretic peptide (BNP is known to increase with higher left ventricular filling pressures). After an initial echocardiogram and performing a 6 minute walk test, the patient will then be given either sildenafil or a matching placebo in a randomized double-blind fashion. One hr later a blood sample for serum BNP, the echocardiogram and the 6 minute walk test will be repeated.

The purpose of this study is to compare dosing compliance between study patients taking controlled release carvedilol once a day, and study patients taking immediate release carvedilol (Coreg) twice a day.