Active clinical trials for "Heart Failure"

The purpose of this study is to survey the guideline compliance of the cardiologists in the treatment of systolic heart failure in Korea

The purpose of this study is to assess functional capacity, quality of life and functioning of the autonomic nervous system in heart failure patients on beta-blocker treatment. The study hypothesis is that subjects who walk less distance, have lower quality of life and reduced heart rate variability during the six minute walk test.

Purpose of the study: To identify whether Electrocardiographic QRS voltage changes (between admission and pre-discharge) and pre discharge 6- minute walk test in patients admitted with acute heart failure can identify patients at risk for recurrent admissions for heart failure.

Heart failure is the leading cause of hospitalizations and readmissions in the United States and is a tremendous economic strain on our healthcare system. There is currently, based on national averages, a 30% readmission rate and 10% mortality rate within 3 months of being hospitalized for heart failure. Retrospective studies have shown benefit to using biomarkers such as BNP to guide inpatient heart failure management. Our own CCF retrospective study showed that decreasing NT-ProBNP by 23%, making patients fluid negative by more than 1.3L, and discharging patients with serum sodium above 135 reduces readmission rates significantly. The purpose of this study is to prospectively use the above mentioned goals in the treatment of heart failure in order to reduce heart failure readmission and mortality rates.

Since the introduction of antiretroviral therapy life expectancy of HIV-infected persons is rising. Different cohorts are observing an increased risk for cardiovascular diseases in this aging HIV-infected population. Traditional cardiovascular risk factors like smoking are more frequent in HIV-infected persons. For example chronic inflammation due to HIV-infection and metabolic disorders also caused by some antiretroviral substances as special non-traditional risk factors in HIV-infected persons can influence the development of cardiovascular diseases additionally. Therefore new research focus in special risk profile associated with HIV-infection or antiretroviral treatment and prevention for HIV-infected patients is developing. This present study is an ongoing prospective regional multicenter trial that was conducted to analyse the incidence, prevalence and clinical course of cardiovacular disorders in HIV-infected out-patients. Cardiac disorders witch are associated with HIV are pericarditis, pleural effusion, pulmonary hypertension, dilated cardiomyopathy, heart failure, myocarditis, bacterial endocarditis and heart valve disorders. In addition to previously stated disorders of the heart, the premature atherosclerosis of coronary arteries, a further even more important disease of the heart in this patient population, went into the focus of most HIV-researchers and physicians.

This study will evaluate the accuracy of data on body position, daily activity, heart rate, 6-minute walk test, and a health survey collected by the wearable cardioverter defibrillator (WCD).

The prevalence of sleep disordered breathing (SDB) reaches more than 50% in chronic heart failure patients (CHF). The main consequence is an increase risk of fatal and non-fatal cardiovascular events. A treatment by continuous positive airway pressure (CPAP) or adaptative servo-ventilation (ASV) reduces this risk. Nevertheless, 75% of severe SDB cases remains undiagnosed and untreated especially due to cost and time delay for polysomnography examination which is the gold standard for SDB diagnosis. Indeed, alternative methods are developed. Some methods, based on nocturnal ECG analysis showed promising results but they are not validated and adapted for cardiac population. Thus, the goal of present study is to test the accuracy of ECG derived respiration signal to screen SDB in a CHF population.

This is an observational study designed to monitor the course of the fraction of reticulated platelets and the correlation thereof to major adverse cardiac and cerebrovascular events after noncardiac surgery.

This study is designed to validate the use of the CoVa Monitoring System in subjects with implanted devices.

To better understand the reasons for underutilization of defibrillator therapy in selected populations, the investigators propose a study to assess heart failure patient knowledge and attitudes toward device therapy. By carefully studying populations of patients with systolic heart failure, the investigators aim to identify the underlying reasons for implantable cardioverter defibrillators (ICD) non-utilization in patients with symptomatic systolic heart failure.