Endocardial fibroelastosis.

Four children were studied in whom form of primary endocardial fibroel diagnosed clinically. In one of these diagnosis was confirmed at autopsy. In the routine clinical and laboratory cardiac catheterization and selective ography were performed on the 4 pati( angiocardiograms were taken at 6 or 1 second after automatic injection at 5 K per cent sodium diprotrizoate (Mioko main pulmonary artery. Mechanical diastole were determined by inspecti' firmed by reference to simultaneous electrocardiograms.