Active clinical trials for "Heart Defects, Congenital"

To examine retrospectively whether transcatheter closure of the interatrial septum leads to myocardial injury and to determine the mechanism.

The primary goal of this study is to systematically describe early neurodevelopment using a complementary set of observational and neurophysiological measures that may predict cognitive and motor delays earlier than currently possible for infants with Complex Congenital Heart Disease (CCHD).

This is a study of the perfusion of the myocardium in adults with specific forms of repaired congenital heart disease using established cardiac MRI techniques and correlating perfusion with clinical outcomes.

This study will test the capability of a non-invasive instrument (the PhysioFlow impedance cardiography instrument) to measure cardiac output in patients with congenital heart disease (CHD). This instrument works by placing electrodes on the skin of a patient and measuring electrical impedance through the chest, which is proportional to blood volume and blood flow at any given time. The instrument has been validated in patients with structurally normal hearts, but in the only two studies using it for patients with CHD, it was deemed too inaccurate for clinical use. The manufacturer of the device would require access to data on the patients in order to improve its accuracy, and that has not been feasible thus far. This study would begin by comparing cardiac output based on the PhysioFlow monitor to standard techniques, then after possible changes to the instrument to enhance accuracy, would test the instrument again in the same way.

This study aims to explore the impacts of CHD and its limitations on adolescents and the living experience of adolescents living with CHD. Hong Kong Chinese adolescents with CHD are having reduced psychological well-being and quality of life than their healthy counterparts. Qualitative study is therefore needed to explore how CHD may impact on the adolescents' psychological well-being and quality of life.

The mortality due to congenital heart diseases has decreased in recent decades, even for infants with the most complex lesions.Therapeutic advances have prolonged the lifespan of people with these diseases. However, there are specific social and psychological troubles that appear later in life and can compromise employability, insurability and social integration. There are different types of congenital heart disease: those not operated in adulthood, and those operated for curative or palliative purposes. It is estimated that about 10 out of 1000 babies are born with a congenital cardiac malformation. One-third of these have a critical diagnosis requiring a surgical intervention. Data from the literature show that there is an unusually high prevalence of psychosocial, neurological, developmental and psychiatric disabilities among survivors, as they enter formal education.There are many factors that influence developmental outcomes at school age. Early intervention is an essential element in controlling these comorbidities. The continuous monitoring of the development by a multidisciplinary team would make it possible to identify a developmental disorder as soon as it appears and respond to it as quickly as possible.For many children and their families, the burden of the developmental consequences is higher than the daily impact of the heart disease. Most studies and measures of quality of life in congenital heart patients require methodological improvements.They contribute little to the scientific basis of the quality of life in these patients. Future quality of life studies must invest in rigorous conceptualization, adequate operational definition and a good measure of quality of life. The investigators propose to develop a reproducible and reliable quality of life measurement tool, suitable for adult patients suffering from congenital heart disease and having had surgery during childhood.

Conventionnal cadiac magnetic resonance (CMR) is the reference to assess changes in right heart flow and pulmonary artery hemodynamics in patients with repaired Tetralogy of Fallot. 4D Flow CMR Imaging is a new imaging modality able to assess all of these parameters faster (8 min vs 30 min) and more comfortably. The aim of this study is to compare conventionnal CMR and 4D Flow CMR for the assessment of these parameters (ventricular volume, ventricular systolic function, and regurgitation of the pulmonary pathway).

Conventional CMR is based on breath-hold 2D cine image acquisitions which are sequentially acquired in different imaging planes. The necessity of precisely planning and then acquiring multiple 2D imaging planes during breath-hold is relatively inefficient and leads to CMR exam times of ≤60 minutes. However, some patients are too ill or young to hold their breath. Furthermore, 2D images sometimes fail to provide a complete picture of complex 3D anatomy of patients with complex morphology. To address these limitations, we have recently developed a 3D cine (3 spatial dimensions plus time) CMR technique. Rather than acquiring 2D cine images in multiple orientations during breath-hold, this approach allows one to acquire a free-breathing 3D block of data for each phase of cardiac cycle that can be reformatted offline into the desired views without adding to the exam time. This added efficiency should lead to a reduction in CMR exam time, increasing patient comfort, and making CMR exam easy and available for all. In addition, the 3D nature of the data may yield more complete information about the anatomy and physiology. In this proposal, we will examine the agreement between the 2D cine and 3D cine CMR techniques with regard to left and right ventricular volumes and systemic and pulmonary blood flow circulation. The internal consistency of the measurements between the 2 techniques will be also investigated. This study will focus on children because they may benefit the most from the short, improved efficiency, and free-breathing CMR exams.

The use of neutrophil lymphocyte ratio is useful for the detection of infection status in newborns after surgery

The objectives are to validate quantification of 2D and 3D right ventricular strian measurements of right ventricular performance in cross comparison to cardiac MRI and to evaluate its relation to right ventricular fibrosis. to evaluate their prognostic value in patients with heart failure with either depressed or preserved ejection fraction.