Active clinical trials for "Heart Failure"

Heart failure is a progressive disease that decreases the pumping action of the heart. This may cause a backup of fluid in the heart and may result in heart beat changes. When there are changes in the heart beat sometimes an implantable heart device is used to control the rate and rhythm of the heart beat. In certain heart failure cases, when the two lower chambers of the heart no longer beat in a coordinated manner, cardiac resynchronization therapy (CRT) may be prescribed. Left Ventricular Capture Management (LVCM) refers to the overall method for determining left ventricular thresholds (level of energy needed to effectively pace the tissue in the lower left chamber of the heart) by measuring, analyzing, and adjusting energy delivered from the CRT device to the pacing lead. The purpose of the Left Ventricular Capture Management Software Download Clinical Trial was to evaluate the accuracy of the Left Ventricular Capture Management (LVCM) feature to support LVCM feature approval in future cardiac resynchronization therapy with defibrillation (CRT-D) devices

Heart failure is a progressive disease that decreases the pumping action of the heart. This may cause a backup of fluid in the heart and may result in heart beat changes. When there are changes in the heart beat sometimes an implantable heart device is used to control the rate and rhythm of the heart beat. In certain heart failure cases, when the two lower chambers of the heart no longer beat in a coordinated manner, cardiac resynchronization therapy may be prescribed. People who have a dangerously fast heart beat, or whose heart is at risk of stopping beating, may be in need of an electronic device called an implantable cardioverter defibrillator (ICD). Atrial tachyarrhythmia (AT) is the name for rapid beats in the upper chambers of the heart. People with AT may experience symptoms such as heart palpitations (a racing or pounding feeling in the chest), shortness of breath, dizziness, fatigue or weakness. The purpose of this study is to study an investigational implantable device containing Cardiac Resynchronization Therapy (CRT) and Implantable Cardioverter Defibrillator (ICD) therapies (CRT+ICD device) in subjects who are at significant risk of developing atrial tachyarrhythmias.

The purpose of this clinical investigation is to demonstrate the safety and effectiveness of the CONTAK® RENEWAL™ 2/4/4HE cardiac resynchronization therapy defibrillator (CRT-D) family and EASYTRAK® 2 lead in delivering LV-CRT or BiV-CRT with an LV Offset for patients with heart failure and an indication for an ICD.

The purpose of this study is to assess the safety and effectiveness of the CONTAK RENEWAL 4 AVT device.

BACKGROUND: Although much has been written about the influence of local opinion leaders on clinical practice, there have been few controlled studies of their effect, and almost none have attempted to change prescribing in the community for chronic conditions such as congestive heart failure (CHF) or ischemic heart disease (IHD). These two conditions are common and there is very good evidence about how to best prevent morbidity and mortality - and very good evidence that quality of care is, in general, suboptimal. Practice audits have demonstrated that about half of eligible CHF patients are prescribed ACE inhibitors (and fewer still reaching appropriate target doses) and less than one-third of patients with established IHD are prescribed statins (with many fewer reaching recommended cholesterol targets). It is apparent that interventions to improve quality of prescribing are urgently needed. HYPOTHESIS: An intervention that consists of patient-specific one-page evidence summaries, generated and then endorsed by local opinion leaders, will be able to change prescribing practices of community-based primary care physicians. DESIGN: A single centre randomized controlled trial comparing an opinion leader intervention to usual care. Based on random allocation of all physicians in one large Canadian health region, patients with CHF or IHD (not receiving ACE inhibitors or statins, respectively) recruited from community pharmacies will be allocated to intervention or usual care. The primary outcome is improvement in prescription of proven efficacious therapies for CHF (ACE inhibitors) or IHD (statins) within 6 months of the intervention.

The CARE-HF trial evaluates the effects of Cardiac Resynchronization (CR) therapy on the mortality and morbidity of patients with heart failure due to left ventricular systolic dysfunction already receiving diuretics and optimal medical therapy.

The purpose of this study is to determine the effect of two different doses of MCC-135, once daily (QD) or twice daily (BID), on the disease state and the quality of life in subjects with congestive heart failure.

This study will look at different pacing modes (how a device is programmed to pace one's heart), and how these modes may assist in one's daily activities and how one is feeling.

The purpose of this study was to evaluate the effect of treatment with darbepoetin alfa on peak oxygen consumption (peak VO2) in subjects with symptomatic CHF and anemia.

A suboptimal level of resynchronization (cardiac resynchronization therapy [CRT]) achieved in many patients with actual standards and techniques based on tissue-Doppler echocardiography could be more effective to obtain better CRT results. Eligible patients who successfully received atrioventricular (AV) junction ablation and biventricular (BiV) pacing are randomised to a comparison between a strategy of right ventricular (RV) apical pacing with delayed CRT based on clinical indications with a strategy of early optimal CRT based on an echocardiographic stratification. End-points: Acute echo comparison (acute echo study) Quality of life and exercise tolerance (Short-term clinical study) Composite end-point of CRT clinical failure (Long-term clinical study)