Active clinical trials for "Pericarditis, Constrictive"

Until now, diagnosis of constriction was based on pressure changes of ventricle by conventional pressure-wide hemodynamic evaluation but not on ventricular volume change. This study will provide answers to persisting questions about volume changes during respiration in patients with constrictive pericarditis by directly measuring both right and left ventricular volume.

The primary aim of this study is to determine the clinical and radiographic findings with constrictive pericarditis in the adult congenital population and determine the degree of right heart failure and dilation from pulmonary insufficiency in the presence of constrictive pericarditis The secondary aim is to elucidate ways to better diagnose constrictive pericarditis and elucidate ways to diagnose right heart failure in the presence of constrictive pericarditis.

To determine normal T1 and T2 values of the liver, and to assess the impact of age and gender To determine the relation between markers of right heart decompensation and T1/T2 values of the liver in patients with pulmonary hypertension, patients with dilated cardiomyopathy, and patients with constrictive pericarditis (or constrictive physiology) To determine inter/intra-observer reproducibility for liver T1/T2 assessment To test/develop multi-feature texture analysis for T1/T2 analysis of the liver and implement machine learning to derive indicative features (MR-derived measures only vs combined with other clinical readouts)

This study will evaluate the effect of deep breathing manoeuvres on inter ventricular interdependency physiology. By providing further insight in this basic physiology we want to add more comprehensive data in favor or not of constrictive pericarditis diagnostic criteria currently used in cardiovascular magnetic resonance.