Active clinical trials for "Heart Failure"

Biventricular pacing is a validated treatment for patients suffering from heart failure resistant to medical treatment. However, up to 30% of the patients are non responsive to this strategy using the coronary sinus approach to pace the Left Ventricle (LV). It has been demonstrated that the magnitude of the improvement was highly dependant on the LV pacing site. The coronary sinus approach rarely offers more than 1 or 2 potential pacing sites. Resynchronisation using a transeptal approach to pace the left ventricle on the cardiology has been shown feasible on small series. We therefore would like to compare these two approached in a randomised prospective study to confirm the hypotheses that endocardial LV pacing by offering multiple choices for the pacing sites reduces the number of non responders and is associated with greater hemodynamic benefit when compared to the conventional coronary sinus approach.

Evaluation of non-invasive treatment modality, using low-intensity extracorporeal shockwaves for treatment of subjects diagnosed with Congestive Heart Failure, with ischemic etiology.

Assess mechanism of action of LCZ696 related to sodium excretion.

Heart failure with preserved ejection fraction (HFpEF) accounts for over 50% of heart failure cases in the United States, affecting a primarily elderly population. No treatment has been shown to affect mortality in HFpEF, which is more than 50% at five years a hospitalization. This project explores the underlying cardiovascular physiology of patients with HFpEF with the goal of identifying new therapeutic targets that would allow improved treatment of this devastating disease.

The purpose of this study is to assess changes in left ventricular performance using echocardiography as well as ventricular remodelling, changes in sleep and changes in mood, anxiety and cognitive functions occurring as a result of treatment of predominant central sleep apnoea by adaptive servoventilation (ASV) in chronic heart failure in addition to optimal medical therapy in chronic heart failure. This will be a substudy of the SERVE-HF study.

BACKGROUND: Exercise intolerance is the primary symptom in older patients with heart failure and preserved ejection fraction (HFPEF), however little is known regarding its mechanisms and therapy. METHODS: 71 elderly stable, compensated HFPEF patients (age 70+1 years; 80% women) with controlled blood pressure were randomized into a 12 month follow-up (FU) double-blind trial of enalapril 20 mg per day (E) vs. placebo (P). Assessments included: peak exercise oxygen consumption (VO2); six-minute walk test; Minnesota Living with HF Questionnaire (MLHF); MRI; Doppler-echocardiography; and vascular ultrasound.

Goal is to examine the efficy of Cardiac Resynchronization Therapy in heart failure patients with narrow QRS complex and optimized medical treatment but echocardiographic desynchronization detection as well as the positve increase of the intraoperative pressureincreasespeed in reverse remodelling and a secondary improvement of functional parameters

The purpose of the study is to determine if low doses of BNP can improve renal function in people with chronic heart failure with renal dysfunction, also to determine whether Sildenafil assists with improvement. This study will enroll only hospitalized patients with heart failure.

The purpose of this study is to determine whether adult bone marrow derived stem/progenitor cells improve cardiac function and symptoms in patients with heart failure and to establish the optimal method of delivery of these cells. Study hypotheses: Administration of G-CSF to patients with heart failure secondary to ischaemic heart disease will lead to an increase in circulating progenitor cells as measured by peripheral CD34+ positive cell counts Cardiac function and symptoms will improve in patients in whom the peripheral CD34+ counts increase in response to G-CSF administration Direct coronary injection of autologous bone marrow derived stem cells will confer an additional improvement in cardiac function and symptoms above that derived from G-CSF infusion alone Direct intramyocardial injection of autologous bone marrow derived stem cells will lead to an improvement in cardiac function and symptoms above that derived from G-CSF infusion alone

An evaluation of the role of resting and exercise cardiac output measurement, by the inert gas rebreathing method, in optimisation of patients with cardiac resynchronisation pacemakers.