View clinical trials related to Congenital Heart Disease.
Filter by:The objective of this study is to investigate the effect of parental peri-natal environmental risk factors and genetic factors on the development of Congenital Heart Disease (CHD). Our hypothesis is that the distributions of some environmental and genetic risk factors significantly differ between neonates with and without CHD.
Diastolic function is poorly studied in children with congenital heart disease. This is mainly due to the lack of validated techniques. Cardiac MRI offers two advantages compared to echocardiography: 1. accurate measurements of ventricular volumes and mass; 2. tissue characterization. The main advantage of echocardiography is a better temporal resolution which allows the study of short events like early relaxation. Overall there is a lack of studies correlating different echocardiographic and MRI parameters of heart function in pediatric populations with congenital or acquired heart diseases. This study will address specific questions on specific groups of patients that might bring more insight into chamber interaction and cardiac function. This study hypothesizes the following: - Atrial enlargement is a marker of chronic increase in filling pressures and 3D echo might be the best method for follow-up. - Cardiac remodeling associated with chronic loading results in changes in diastolic properties related to changes in cardiac mass and volume. This is related to changes in cardiac mechanics influencing diastolic parameters. Especially the influence on twisting and untwisting will be studied. - Regional myocardial fibrosis and scarring may account for regional systolic and diastolic dysfunction with possible prognostic impact
The purpose of this study is to test the accuracy of 7 indicators in screening congenital heart defects (CHD) in all newborns (symptomatic or asymptomatic) to determine whether these indicators could be applied in the nationwide newborn CHD screening. The investigator's hypothesis is that 7 indicators are effective in neonate CHD screening with the acceptable accuracy.
Neurally adjusted ventilatory assist (NAVA) is a new mode of mechanical ventilation that delivers ventilatory assist in proportion to neural effort. It was a controlled randomized single-center prospective study in order to explore the efficacy of this new mode of mechanical ventilation after corrective open-heart surgery for congenital heart disease.
Background: Blood clots cause poor outcomes, including death, in babies with heart defects that require a surgical connection ("shunt") to provide blood flow to their lungs. Aspirin (ASA) blocks the part of the blood that helps clots form (platelets). Aspirin is used in babies with shunts to prevent blood clots. The dose of aspirin given to babies is based on adult research. Because babies are different from adults, the investigators do not know if the dose is enough to block platelets, or if it is too much and may cause bleeding. The investigators can test the platelets using a blood test called Thromboelastography with Platelet Mapping (TEG-PM). This test needs a small amount of blood so it can be used in babies. Hypothesis and Specific Aims: The investigators suspect the aspirin doses typically given babies are not enough to block platelets and prevent blood clots in their shunts. The investigators want to determine the percentage of babies whose platelets are not blocked enough (< 70% inhibition), by using TEG-PM. The investigators also want to determine how often bleeding or clots occur in babies receiving aspirin.
The purpose of this study is to examine the role of genetic variation in the oxidative stress response on critical perioperative and short-term outcomes after neonatal heart surgery. The goals will be to determine 1) if the oxidative stress pathway is an important one for therapeutic intervention in neonates with severe congenital heart defects and 2) if variants in the oxidative response pathway can be used to identify patients at increased risk for adverse outcomes.
Statins have been used to low cholesterol to prevent and treat coronary artery diseases. It was also reported that statins could protect endothelial function and cardiac function during coronary artery bypass graft. The investigators recent found simvastatin reduced myocardial injury during noncoronary artery cardiac surgery in single medical center. The investigators further investigate that whether simvastatin can protect myocardium during noncoronary artery cardiac surgery with cardiopulmonary bypass and improve cardiac function with long term use postoperatively in two medical centers.
Background: - People with congenital heart disease may develop heart failure earlier that those who do not have the disease. One theory to explain this is that the heart s own blood supply may be different in people with congenital heart disease. Problems with this blood supply can severely damage the heart. This damage can be studied with a heart imaging test called a cardiac magnetic resonance imaging (MRI) scan. Researchers want to use this type of scan to look at the blood supply to the heart in people with congenital heart disease. Objectives: - To learn more about the blood supply to the heart in people with congenital heart disease. Eligibility: - Individuals at least 18 years of age who have heart defects caused by congenital heart disease. Design: - Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected. - Participants will have a cardiac MRI scan to look at the blood flow to the heart. - Participants will also have a heart stress test to measure heart function during exercise. - Other imaging studies of the heart may be performed to collect more information on heart function.
Humidified high flow nasal prong oxygen therapy is a method for providing oxygen and CPAP. The delivery of high flows decreases dilution of the inhaled oxygen and, by matching patient's peak flow, allows accurate delivery of the set FiO2 throughout the whole inspiratory phase. In addition, a flow-dependent effect of continuous positive airway pressure, possibly due to an air entrainment mechanism, has been documented in healthy volunteers and in patients with COPD. The investigators working hypothesis is that the use of post-extubation CPAP delivered via nasal cannulae in infants less than 18 months, post-bypass surgery will have better PaCO2 values than infants extubated on to oxygen therapy.
The aim of the study is to evaluate the value of postoperative troponin in the prediction of mid term and long term mortality and morbidity in children with congenital heart disease undergoing cardiac surgery.