View clinical trials related to Ventricular Dysfunction.
Filter by:This study plans to learn more about heart function among individuals with chronic obstructive pulmonary disease (COPD). In particular, the investigators want to understand the different patterns of right ventricular response to pulmonary hypertension (high pressure in the lungs) during rest and exercise. By identifying patterns of right ventricular dysfunction, this study will help identify better treatments for patients with COPD in the future.
The overall aim of the study is to establish the clinical importance of cardiac dysfunction, by estimating its incidence and impact on short- and long-term outcomes, in a mixed population of critically ill patients with multi-organ failure. Pathogenesis of cardiac dysfunction in critical illness and key molecules linked to this will be explored.
Rationale: In addition to surgery, effective breast cancer (BC) treatment typically requires chemotherapy, radiotherapy, or both. However, it is still unclear whether patients with BC are at increased risk of long-term cardiac dysfunction due to the adverse effects of these therapies. In a cross-sectional study in primary care, a comparison on cardiac dysfunction between 350 BC survivors and 350 age- and general practitioner (GP)- matched controls without cancer was made. In that study, BC survivors were at increased risk of mild systolic cardiac dysfunction (left ventricle ejection fraction (LVEF)< 54%). By contrast, there was no significant difference in an LVEF < 50% or in diastolic dysfunction. To date it remains uncertain whether the mild or subclinical dysfunction we observed predicts further cardiac deterioration. Consequently, the translation of these results into guidelines for the daily practice of the GP is unclear. Objective: The aim of the here proposed study is to clarify whether cardiac function in survivors of BC should be monitored by GPs, by assessing whether an unselected population of long-term BC survivors is at increased risk of developing cardiac dysfunction, whether in this group at-risk subgroups exists, and what factors are associated with the highest risk. Study design: A new assessment of cardiac function among women included in the BLOC-I study. This produces a longitudinal matched cohort design consisting of two cohorts in primary care. Study population: Survivors of BC, diagnosed ≥11 years ago who received chemotherapy and/or radiotherapy, and a matched reference population with no history of cancer. All participants participated in the Breast cancer Long-term Outcome of Cardiac function (BLOC-I) study. Main study parameters/endpoints: Left ventricular systolic dysfunction. Systolic cardiac dysfunction is defined as a LVEF <54/50/45%.
A study to see how common right heart failure (right ventricular dysfunction) after major surgery is, and to investigate if right ventricular dysfunction causes worse patient outcomes after surgery.
The goal of this randomized controlled trial is to identify the effects of percutaneous interventions for branch PA stenosis on exercise capacity in patients with d-TGA, ToF and TA. The main question[s] it aims to answer are: The primary study objective is to identify the effects of percutaneous interventions for branch PA stenosis on exercise capacity in patients with d-TGA, ToF and TA. The secondary objectives are 1) to assess the effects of percutaneous interventions for branch PA stenosis on RV function and 2) to define early markers for RV function and adaptation to improve timing of these interventions. Participants will undergo the same series of examinations at baseline and approximately 6 months follow-up (within 6 week time-range) as part of standard care: conventional transthoracic echocardiogram (TTE), cardiopulmonary exercise testing (CPET) and conventional Cardiac Magnetic Resonance (CMR) including a low dose dobutamine stress MRI to assess RV functional reserve. The low dose dobutamine stress MRI will be performed in the interventional group from the UMC Utrecht/WKZ and Erasmus MC because the LUMC and AUMC do not have a suitable infrastructure for the low dose dobutamine stress MRI and this cannot be achieved throughout the duration of this study. The baseline CMR in the interventional group will be performed as close as possible prior to the intervention but maximal 4 weeks prior to the intervention. In addition, the intervention group will undergo standard RV pressure measurements during the intervention. Quality of life (QoL) questionnaires will be obtained at baseline and 2 weeks post intervention (intervention group) or a similar time range in the control group, which is based on experts opinion. TTE, CPET and conventional CMR will be performed within 2-4 years follow-up to assess the long-term effects of percutaneous PA interventions. Researchers will compare the difference in VO2 max (% predicted) between the interventional group (TGA, ToF or TA patients with a class II indication for a PA intervention who will undergo a percutaneous intervention for a PA stenosis) and the control group (TGA, ToF or TA patients with a class II indication for a PA intervention who will undergo conservative management)
Three-dimensional echocardiography has become a gold standard to assess right ventricular (RV) function, and investigators plan to use 3D transesophageal echocardiography to assess RV function in 3 types of aortic valve replacement (AVR): surgical AVR (SAVR), mini-sternotomy AVR (mini AVR), and transcatheter AVR (TAVR).
The main objective of the study is to demonstrate that prophylactic treatment of patients with asymptomatic frequent (>10%) PVCs is superior to simple follow-up strategy with no therapy to prevent subsequent LV dysfunction at 24 months. The prophylactic treatment is based on drugs ± ablation (ablation can be performed if the PVC burden remain >10% after 2 lines of AAD treatment since the initiation of the study). The primary endpoint will be the development of LV dysfunction (PVC-iCMP) defined as a 15% relative LVEF decrease (and/or a LVEF <50%) within 2 years following randomization, on cardiac magnetic resonance imaging (cMRI) (or transthoracic echocardiography (TTE) when not possible).
Heart failure (HF) is the most common nosology encountered in clinical practice. Its incidence and prevalence increase exponentially with increasing age and it is associated with increased mortality, more frequent hospitalization and decreased quality of life. An initial approach to the treatment of HF patients with reduced left ventricular (LV) systolic function and left bundle branch block (LBBB) was implantation of cardioresynchronization device using biventricular pacing. This has resulted in long-term clinical benefits such as improved quality of life, increased functional capacity, reduced HF hospitalizations and overall mortality. However, conventional cardiac resynchronization therapy (CRT) is effective in only 70% of patients. And the remaining 30% of patients are non-responders to conventional CRT. Subsequently, His bundle pacing (HBP) has been developed to achieve the same results. According to other studies HBP has showed greater improvement in hemodynamic parameters than with conventional biventricular CRT. But, nevertheless, there are significant clinical troubles with HBP. In this regard, in 2017, the left bundle branch pacing (LBBP) was developed, which demonstrated clinical advantages compared to biventricular CRT. This method has become an alternative to HBP due to the stimulation of LBB outside the blocking site, a stable pacing threshold and a narrow QRS duration. A series of case reports and observational studies have demonstrated the efficacy and safety of LBBP in patients with CRT indications. However, it is not enough data about CRT with LBBP effectiveness in LV remodeling, reducing mortality and complications. According to our hypothesis, CRT with LBBP compared with conventional biventricular CRT will significantly improve the clinical outcomes and reverse LV remodeling in patients with chronic HF with reduced LV ejection fraction and reduce the number of non-responders to conventional CRT.
Acute respiratory distress syndrome (ARDS) is often complicated by right ventricular dysfunction (RVD), Acute cor pulmonale is the most serious form of ARDS complicated with RVD.Levosimendan is indicated for short-term treatment of acute decompensated heart failure that is not responding well to conventional therapy and requires increased myocardial contractile force.In 2016, the European Society of Cardiology issued recommendations for the management of acute right heart failure, stating that levosimendan can improve right ventriculo-pulmonary artery coupling by both increasing right heart contractility and reducing pulmonary vascular resistance.However, the clinical application of levosimendan in the treatment of ARDS right heart dysfunction is insufficient.Therefore, this study intends to use transesophageal ultrasound to evaluate right ventricular function, reduce the limitation of poor right ventricular window in transthoracic echocardiography, and conduct a multi-center randomized controlled study to further explore the effects of levosimendan on right ventricular function in ARDS patients, such as tricuspid ring systolic displacement (TAPSE) and tricuspid ring systolic displacement velocity (S '). Effects of right ventricular area change fraction (RV FAC), right ventricular end-diastolic area/left ventricular end-diastolic area (RVEDA/LVEDA), pulmonary circulation resistance (PVR), hemodynamics and mortality.
Recent clinical trials have proven the cardiovascular benefits of new medications for patients with heart failure with reduced ejection fraction (HFrEF), especially sodium-glucose co-transporter 2 (SGLT2) inhibitors. There are no existing randomized clinical trials evaluating the efficacy and safety of dapagliflozin (nor any other SGLT2-inhibitor) to limit cardiac remodeling in patients with acute myocardial infarction (AMI) and left ventricular (LV) dysfunction. Preventing cardiac remodeling, an established predictor of subsequent heart failure (HF) and cardiovascular death, is likely to translate into benefit in reducing clinical events in post-MI patients.