Active clinical trials for "Heart Defects, Congenital"

A cross sectional study utilizing congenital heart disease patients presenting for clinically indicated cardiopulmonary exercise test. Baseline questionnaires (see below) will be administered prior to the exercise test. Exercise test data and clinical data will be recorded. Questionnaire data will be compared to clinical data in and between disease severity groups. Disease severity will be determined based on hemodynamic (not anatomic) classification according to an algorithm adapted from the European Society of Cardiology.

Advanced surgical and medical healthcare systems have resulted in an increased prevalence of children and adults with congenital heart disease in Western countries. These patients often necessitate non-cardiac interventions. Previous studies have demonstrated that these patients are at increased risk of morbidity and mortality when presenting for non-cardiac interventions. The aim of this study is to know the prevalence of patients with congenital heart disease presenting for non-cardiac interventions in a tertiary hospital and to determine their outcome.

This study aims to examine the psychological well-being and QoL of Hong Kong Chinese adolescents with CHD by comparing the self-esteem level, depressive symptoms, and quality of life of adolescents suffering from CHD with healthy norms and cancer survivors. identifying possible factors affecting the quality of life of adolescents suffering from CHD.

Sudden cardiac death (SCD) is one of the major causes of mortality in adults with congenital heart disease (ACHD). Risk stratification for sudden cardiac death in this patient group is challenging and at the current moment there are no clear guidelines on implantable cardioverter-defibrillator (ICD) implantation for primary prevention of SCD in this young patient population. The reason for this is the fact that this is a heterogenous group of patients and SCD is a relatively rare event. Because of this there have been no prospective studies on SCD in ACHD. However, multiple retrospective studies on ICD implantation in ACHD have shown that this treatment does appear to be effective. Researchers from the Academic Medical Center have identified several risk factors for sudden cardiac death. A risk score was created using this data, which has been validated in an internal and external cohort in a retrospective setting. The design of this study, including the conception of the risk score, its calculation method and validation will be published in an international scientific peer-reviewed journal. The hypothesis of this study is that the risk score accurately predicts the risk of sudden cardiac death.

In a randomized, sham-controlled crossover trial the investigators will test whether supplemental oxygen given during cardiopulmonary exercise testing will improve exercise performance and physiological parameters in patients with grown-up congenital heart disease.

Prematurely born infants with ductal-dependent congenital heart disease (CHD) are at increased risk to develop necrotizing enterocolitis (NEC). Abnormal left to right blood flow through a patent ductus arteriosus can cause intestinal ischemia and compromise the gastrointestinal tract as a barrier to infection. In some infants, bacterial translocation leads to NEC which may result in death, intestinal perforation, cholestasis and, at the very least, feeding problems. Predicting which infants with CHD will develop NEC will potentially decrease the severity of disease if interventions were started earlier. Near-infrared spectroscopy (NIRS) allows determination of regional oxygen saturation levels in tissues such as brain, kidney, and as recently reported, intestine. This study will test whether or not decreasing intestinal oxygen saturations can predict the development of NEC in this at risk population before the symptoms become severe. NIRS probes will be placed on the forehead, flank and abdomen of eligible infants and regional oxygen saturations will be recorded prospectively and continuously with the clinical care team blinded to the data. The development of NEC and significant feeding problems will then be correlated with the regional oxygen saturations to determine whether decreased intestinal oxygen saturations predicted early signs and symptoms of NEC. We anticipate generating pilot data in 30 infants who meet inclusion criteria. Support of this research will be provided partially by Somanetics, the manufacturer of the INVOS regional oxygen saturation monitors. They will, however, have no control over the data generated by this study.

Identification of the pathophysiology associated with Eisenmenger's syndrome has led to the evaluation of targeted therapies. Iloprost, a prostacyclin analogue, is one such targeted therapy used in patients with Eisenmenger's syndrome. The purpose of our study is to assess the effects of inhaled iloprost on patients with Eisenmenger's syndrome.

Infants with congenital heart disease have more frequent infections and exposures to antibiotics than healthy infants. It is unknown how congenital heart disease affects the development of bacterial colonization of the intestines. It is also unknown whether probiotics will change the bacteria in the intestine of infants with heart disease to become more like those of healthy infants without heart disease. This pilot trial is designed to address these two questions.

Retrospective medical record review study of specific adverse events in children with congenital heart disease who received palivizumab for prophylaxis of serious respiratory syncytial virus infection and control subjects that did not receive palivizumab

This study will investigate the different tidal volume (Vt) strategies during a cardiac catheterization procedure to determine whether or not low or high Vt have an impact on cardiac output. Research question: While maintaining the same minute ventilation/PaCO2, does higher Vt (10 cc/kg)/lower rate vs. lower Vt (6 cc/kg)/higher rate (maintaining consistent PEEP) result in improved cardiac output?