Active clinical trials for "Tetralogy of Fallot"

This study examines subclinical lymphatic abnormalities in Tetralogy of Fallot patients, utilizing lymphatic magnetic resonance and near-infrared fluorescence imaging.

Pulmonary artery rehabilitation procedure is done frequently in the catheterization suite for patients with pulmonary artery stenosis or small pulmonary arteries following surgical repair for patients with tetralogy of Fallot with pulmonary atresia and major aortopulmonary collaterals. Considering that the investigators' institution is a major center for treating these cases, the investigators wanted to do a retrospective review of the investigators' data to share the investigators' anesthetic management of these procedures.

Patients with pulmonary regurgitation after surgical correction of ToF over 13 years old will be recruited from the UCSF adult congenital heart disease clinic. Since there is no data in the literature describing the prevalence of abnormal MRI volumetric and functional parameters in asymptomatic patients with PR after ToF repair, a pilot study with 30 patients will be conducted. Increase in sample size may be necessary in the future to accurately interpret the data. After informed consent is obtained, clinical history and physical examination as well as review of old charts will be performed to characterize these patient's clinical status. All patients will undertake a graduated supine bicycle exercise test with MVO2 measurement to assess exercise capacity. MRI studies will be performed in a 1.5 tesla unit. SSFP cine images will be obtained in the short-axis plane encompassing the entire heart. Velocity-encoded cine MR images will be obtained perpendicular to the direction of blood flow in the main pulmonary artery. Volumetric and flow analysis will be performed in a separate dedicated workstation by a radiologist. End-diastolic volume, end-systolic volume, ejection fraction, total ejection fraction and pulmonary regurgitant fraction will be calculated.

Using biocardiac model in helping the total correction of the Tetralogy of Fallot.

OBJECTIVES: I. Identify latent hypoparathyroidism in normocalcemic adult survivors with repaired conotruncal cardiac defects, by evaluating parathyroid gland secretory function after induced hypocalcemia. II. Determine the relationship of parathyroid hormone secretion to microdeletions in the same region of chromosome 22q11 as found in patients with DiGeorge anomaly.

Magnetic Resonance Imaging (MRI) is a non-invasive test that can look at the heart without using radiation. An MRI will allow the doctors to look at the heart in order to assess how well the ventricle is pumping, the amount of blood that it is pumping in addition to how much it is stretching. An engineer at Georgia Tech has developed a new way of looking at an MRI. It is believed that this new way of looking at an MRI may be better able to tell us when to replace the valve in these children. If this new process works, not only can we apply it now but we will be able to look at previously performed MRIs and gather more information about these children and their heart function in order to help these and other children in the future. We are planning on enrolling 30 subjects in this study. Some of the subjects will be enrolled and have their MRI strictly for the purpose of this study. Some of the subjects will be already scheduled for a routine MRI of their heart and we will ask them if we can do extra images for the study while they are already here.

To compare of mid-term results of total correction of tetralogy of fallot between preservation of pulmonary valve and trans-annular patching , thus avoiding PV regurgitation during TOF repair , this will determine the value of this procedure over trans-annular patching regarding to right ventricular performance.

Patients with congenital heart disease in whom the right ventricle is exposed to pressure or volume overload show progressive systolic dysfunction of the right ventricle, the fact of which conveys substantial morbidity and mortality. The aim of this study is to investigate the myocardial perfusion in these patients by myocardial contrast echocardiography (MCE) in order to determine whether disturbed blood flow plays a role in the development of right ventricular systolic dysfunction.

Congenital malformations correspond to defects in organ morphogenesis identifiable at birth or intrauterine life, affecting 2-3% of births. Inside of these malformations, Congenital Heart Disease corresponds, in particular, to structural defects of the heart or major blood vessels thereof may or may not be associated with other types of syndromes.The resolution is usually surgical. Also, these patients present a decrease in physical fitness, psychological imbalance, lower quality of life and risk significant morbidity and mortality from respiratory infections among other problems. This can have severe consequences for health in the medium and long term. The habits acquired during childhood and adolescence are determinant for the adult life, being relevant levels of activity and physical condition, especially in children with pathologies. In this way, it is vital to know from childhood parameters that indicate the baseline state of these patients according to the levels of physical activity, exercise capacity, nutritional status and quality of life. These will be key indicators to take into account in the future, to adapt rehabilitation plans that will reduce the effects of their condition. The objective of this protocol is To characterize the levels of Activity, and Physical Capacity of children with congenital heart disease regularly treated at the Cardiovascular Center of Dr. Luis Hospital Calvo Mackenna, compared to healthy children matched by age and sex.

Evidence is emerging that those patients with cyanotic pathologies may be more vulnerable to end-organ injury during and after surgery than those patients without, because of compromised cardiopulmonary performances or the proinflammatory state that follows conventional hyperoxic cardiopulmonary bypass. Several clinical and basic studies have identified that controlled oxygenation during the initiation of bypass significantly improved the cardiac adaptation and remodeling capacity than hyperoxic oxygenation strategy among cyanotic patients undergoing tetralogy of Fallot repair, as evidenced by these reduced myocardial gene expression profiles associated with reoxygenation injury. The investigators designed the reoxygenation for pediatric cardiac surgery study to investigate the effect of reoxygenation during cardiopulmonary bypass on clinical outcomes in patients with cyanotic congenital heart disease .