Active clinical trials for "Heart Failure"

The purpose of this study is to describe insulin resistance in a general chronic heart failure population, in combination with muscle strength, body composition and cardiac function. It is assumed that insulin resistance is increased in CHF patient, and that this is related to decreased muscle strength and decreased lean tissue mass.

Purpose :Research into the impact of Qiliqiangxin capsule on IFN-γ，IL-4，NT-proBNP in dilated cardiomyopathy patients with heart failure. Methods :Data were collected from the patients with idiopathic dilated cardiomyopathy ( cardiac function NYHA Ⅱ-Ⅳ) in the first affiliated hospital of Harbin Medical University from May 2012 to April 2014. These 30 cases were treated under the recommendations of normal diagnosis and treatment in cardiomyopathy. This experiment was randomized double-blinded，the experimental interferences were avoided and patients were divided into the experimental group and the placebo group. The patients in experimental group received the relevant tests and inspections before the beginning of experiment，signed the informed consent. Then the investigators get the venous blood centrifugalization and cryopreservation. The patients take the medicine qiliqiangxin three times per day，four tablets at a time. Afrer a month，the investigators evaluated the symptoms，the function of heart，blood pressure，heart rate and keep blood specimens. Three and six month later，electrocardiogram and echocardiography were taken and the determination of the NT - proBNP was done. The placebo group was followed up in the same way.

Sleep disordered breathing is very common in patients with chronic heart failure with reported prevalence rates of 50-75%. Adaptive Servo-Ventilation (ASV) can be used to treat sleep apnea in these patients. This is an observational study to document changes in respiratory parameters in HF patients using ASV for a period of 12 months.

The purpose of the REVERSE Post Approval Study (PAS) is to confirm the benefit observed in the REVERSE and RAFT pivotal studies in "real-world" clinical practice.

This is a clinical trial to evaluate the clinical benefit of remote monitoring in patients with heart failure having an ICD-CRT implanted. Study purpose The purpose of this study is to test the hypothesis that the monitoring of specific clinical parameters, obtained by remote controls of ICD-CRT could improve clinical course of patients with heart failure. Study design This is a prospective observational study, comparing clinical course of patients with heart failure having an ICD-CRT implanted, followed or not by remote monitoring. This study will include 870 subjects with ICD and CRT-D, and followed by a remote monitoring system (with or without weight and pressure external sensors) or followed by conventional ambulatory visits. Primary endpoints The primary endpoint of this study is to document no superiority of unplanned hospital access for cardiac reasons (included access to the emergency units ) or death for cardiovascular causes in remote monitoring group (with or without weight and pressure external sensors) compared to conventional follow-up (usual care group).

The purpose of the trial is to identify factors which can be used as guidance when optimizing continuous-flow left ventricular assist device (CF-LVAD) settings. The hypothesis of the study is that pulmonary capillary wedge pressure (PCWP) will change independently of left ventricular end diastolic diameter (LVEDD) when increasing pump speed ie ΔPCWP/RPM ≠ ΔLVEDD/RPM. The primary combined endpoint of the study is correlation between ΔPCWP and LVEDD slope under ramp testing in a cohort of "continuous-flow left ventricular assist device" heart failure patients.

Medamacs is a prospective, observational study of ambulatory patients with advanced heart failure. The study enrolls patients who have not yet received a Left Ventricular Assist Device (LVAD) but who receive their care at a hospital with a Joint Commission certified mechanical circulatory support program. Medamacs is funded through the Interagency for Mechanically Assisted Circulatory Support (INTERMACS) NHLBI Contract.

Study will compare measurements made with Necklace device for stroke volume/cardiac output with values from a FDA-approved reference device. The gold standard that will be used is Cardiac MRI. Subjects will be measured with both the Necklace, reference device, and the Cardiac MRI. Values calculated by the Cardiac MRI analysis will be compared with the reference device and the Necklace.

The purpose of this research study is to test the function of a subjects implantable cardioverter defibrillator (ICD) function throughout the duration of their heart surgery. ICD function can be altered during some types of heart surgery such as those when a pump (ventricular assist device - VAD) is implanted. The investigators would like to study the mechanism of device and ICD malfunction.

The investigators goal is to create a digital registry that allows for seamless integration of patient reported outcomes, electronic health record data, and pharmacy information into data collection. The investigators will accomplish this using a novel patient centered mobile health platform called Hugo that will allow them to engage patients in an entirely novel manner.