View clinical trials related to Ventricular Dysfunction.
Filter by:The purpose of this observational study is to evaluate the performance of the Berlin Heart EXCOR Active driving unit while being used with the approved EXCOR ventricular assist device system.
This is a randomized, prospective, single-blinded trial to determine the overall rate of successful His-Purkinje conduction system pacing Optimized Trial of Cardiac Resynchronization Therapy (HOT-CRT) versus biventricular pacing using coronary sinus lead (BVP) to compare acute and mid-term outcomes. Acute outcomes include change in QRS duration pre-and post-pacing (degree of QRS narrowing) and incidence of major periprocedural complications (pericardial tamponade, need for lead revision, etc.). Mid-term outcomes include echocardiographic response at 6 months along with a composite clinical outcome of heart failure hospitalization, ventricular arrhythmias, crossover, and all-cause mortality.
Cardiac dysfunction has been reported to be common in patients infected with COVID-19. The aim of this study is to evaluate the clinical importance of cardiac dysfunction in critically ill patients infected with COVID-19.
The purpose of this research is to prospectively test and validate the single-lead Low EF algorithm in outpatients in order to test the performance of a single-lead ECG based algorithm to identify people with decreased left ventricular EF.
This prospective study evaluates the mechanisms of benefit of sacubitril/valsartan in a population of outpatients with heart failure with reduced ejection fraction, to investigate the relationship between the effects on left ventricular ejection fraction and volumes and noninvasively hemodynamic echo-derived parameters, as cardiac output and left ventricular filling pressure.
The outbreak of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been declared a public health emergency of international concern. Hospitalized COVID-19-positive patients requiring ICU care is increasing along with the course of epidemic. A large number of these patients developed acute respiratory distress syndrome (ARDS) according to current data. However, the related hemodynamic characteristic has so far been rarely described.
Right ventricular failure (RVF) is an independent factor of mortality for many pulmonary diseases. Currently, RVF is defined as the incapacity of the RV to maintain the flow without dilating to use the Frank-Starling law (i.e., increase of the ejection volume associated to an increase of the preload). RVF is associated to RV systolic dysfunction which is conventionally defined as a decrease of the RV ejection fraction (RVEF) < 45%. In the intensive care unit (ICU), acute RVF is mainly due to the acute respiratory distress syndrome (ARDS), sepsis or septic shock, and less often to severe pulmonary embolism or RV infarction. The anatomical complexity of the RV precludes any geometrical assumption to estimate its volume, hence its ejection fraction (EF) using two-dimensional (2D) echocardiography. For this reason, the evaluation of RV systolic function is currently based on parameters used as surrogates of RVEF: fraction area change in 2D-mode, tricuspid annular plane systolic excursion (TAPSE) in M-mode, and maximal velocity of the systolic S' wave using tissue Doppler imaging. Real-time three-dimensional (3D) echocardiography now enables accurate on-line measurement of RV volume and provides at the bedside the non-invasive assessment of RVEF. 3D transthoracic echocardiography (TTE) has been validated to measure RV volume and RVEF compared to MRI which is the gold standard. However, 3D transesophageal echocardiography (TEE) has not yet been validated in this specific clinical setting, while 2D TEE is frequently used in ICU in ventilated and sedated patients. Accordingly, the diagnostic ability of 3D echocardiography to quantify RV systolic function in ICU patients with RVF of any origin is currently unknown.
Background: PDA is viewed as a standout amongst the most widely recognized congenital heart defects in children and its closure is responsible for many hemodynamic changes that require intervention and care. Methods: A retrospective study included fifty children with isolated PDA treated by surgical ligation from June 2015 to June 2018. Their mean age was 15.78 ± 7.58 months and 72% were females. The LV dimensions and systolic function were assessed by two-dimensional echocardiography pre PDA ligation. The mean duct size was 4.08 ± 1.25 mm.
This research study because you participate in long distance triathlon of Embrun. In recent years, there has been a craze for races at increasingly longer distances (ultra-endurance) with risks to the cardiovascular system poorly identified. In the short term, cardiac functional ultrasonographic changes and disturbances of biomarkers such as troponin are reported in participants in long-term endurance trials, assuming myocardial remodeling and transient tissue damage leading to suffering or "heart fatigue". These constraints could, to the extreme, favor the development of arrhythmia at the atrial and ventricular stages. Cardiac alterations are nevertheless poorly characterized and the consequences, in particular the risk of ventricular rhythm disturbance, have not been studied.The aim of this study is to investigate the relationship between right ventricular functional abnormalities and the occurrence of ventricular rhythm disturbance, following intense and prolonged exercise, in healthy triathletes subjects.
Primary mitral regurgitation (MR) is the second most frequent valve disease requiring surgery and it is important to identify patients whose outcome could be improved with surgery by considering the risks and benefits. The current guidelines recommend surgery in patients with symptomatic severe mitral regurgitation or in asymptomatic patients who develop early signs of left ventricular (LV) dysfunction as a result of the MR. However, it remains difficult to determine optimal timing for surgery with the current guidelines. Early-stage LV dysfunction with normal LVEF predicts post-operative LV decompensation and poor prognosis and longitudinal myocardial function is suitable for detection of minor myocardial damage in patients with MR. Thus, inestigators want to study the value of LV global longitudinal strain (GLS) to predict postoperative LV dysfunction in patients with chronic severe MR and preserved pre-operative LVEF. The principal aim is to prove that the optimal timing for surgery, in asymptomatic chronic severe primary MR with preserved LVEF, is before GLS alteration, and that investigators should not wait for LV dilatation of dysfunction.