View clinical trials related to Ventricular Dysfunction.
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The aim of this investigation was to assess the value of Systolic Time Intervals (STIs) as a method of detecting Left Ventricular Dysfunction (LVD) in patients admitted to the emergency department for cute exacerbations of chronic obstructive pulmonary disease (AECOPD) and whether STIs measured under Valsalva manoeuver (VM) could improve the distinction between patients with LVD and those without LVD.
The purpose of the trial is the analysis of safety and tolerability of the chymase inhibitor BAY1142524 in comparison to placebo using a 2 weeks treatment period in clinically stable patients with left-ventricular dysfunction after myocardial infarction. BAY1142524 or placebo will be given on top of evidence-based standard of care for left-ventricular dysfunction after myocardial infarction. Primary objectives are the analysis of safety and tolerability as evidenced by the incidence and severity of adverse events. BAY1142524 will be administered in a parallel group design using four doses (5, 10, 25 mg twice daily, and 50 mg once daily). Each dose group consists of 9 patients treated with verum and 3 patients treated with placebo.
The purpose of this study is to characterize changes in the plasma proteome over time following left ventricular assist device (LVAD) implantation.
The main purpose of this research is to determine whether injecting mesenchymal precursor cells (MPC) into the heart during surgery to implant a left ventricular assist device (LVAD) is safe. MPCs are normally present in human bone marrow and have been shown to increase the development of blood vessels and new heart muscle cells in the heart. In addition, this research is being done to test whether injecting the MPCs into the heart is effective in improving heart function.
The purpose of this study is to evaluate the effect on distance covered in a 6 minute walking test of Rate Responsive pacing in patients with permanent atrial fibrillation and reduced left ventricular ejection fraction treated with atrioventricular junction ablation and biventricular pacing.
In chronic systolic heart failure patients submitted to cardiac resynchronization therapy, the study aims at assessing whether geometric variations in coronary sinus lead tip trajectory throughout the cardiac cycle acutely induced by biventricular pacing, are predictive of the volumetric and clinical response to the treatment at six-month follow-up.
The prevalence of Chagas' disease continues high even in the developed countries. Chagasic Cardiomyopathy with preserved ventricular function is an understudied form of Chagas disease. Since a majority of patients with these changes progress to dilated form with ventricular dysfunction with all its serious consequences, it is interesting to better understand the pathophysiology of the disease at the stage where there electrocardiographic changes and preserved ventricular function. And besides, search strategies to slow the progress, or even prevent the chronic phase of the disease. For this reason the investigators will evaluate the effects of exercise training in patients with Chagas cardiomyopathy without ventricular dysfunction.
This is a pilot study into the effects on heart function when pacing the right ventricle (RV). This study aims to enrol a population who are clinically indicated to receive a pacemaker. When normal conduction within the heart fails, the treatment may be to implant a permanent pacemaker. Pacing involves passing a lead via a vein to the heart and using an electrical impulse to stimulate a beat. Increasingly the available evidence suggests that long term RV pacing is associated with complications - left ventricule (LV) dysfunction, heart failure, atrial fibrillation (AF) and death in some patients. What we do not see are a large proportion of all patients who receive pacemakers suffering pacing related adverse effects. If there could be a way of identifying those patients in the group who go on to develop pacing induced cardiomyopathy at the time of initial pacing implant, this would be a very valuable clinical measure. These patients could be identified from the outset and paced with a biventricular device to avoid the pacing induced cardiomyopathy. Whilst much energy has been directed towards the LV as a focus of the clinical markers of disease, little has been published looking at RV haemodynamics. We plan to study a cohort of patients who are clinically indicated to receive a pacemaker and study their RV in detail at the time of implantation. We will use conductance catheters and echocardiography to determine measures of pumping function. We will then follow them up for a period of six month using echocardiography and blood markers of heart dysfunction. In those patients who have a reduction in heart function we will then look for common patterns within their initial measurements.
The purpose of this study is to determine whether endurance exercise of either high or moderate intensity can reverse structural and functional changes of the heart in patients with diastolic heart failure, and to investigate which type of exercise is best in terms of aerobe capacity and quality of life. The investigators expect that high intensity endurance exercise is superior to moderate intensity endurance exercise.