Endocardial-Cushion Defects

RENEWED interest has recently developed in the diagnostic features of congenital malformations of the atrioventricular canal. This interest has been stimulated by the more accurate diagnosis offered by newer cardiologic technics and by recently reported surgical correction of these defects. Although the anatomic distinction of the so-called "ostium-primum" type of defect of the atrial septum has been described in the literature for decades, only in recent years has a clear-cut clinical picture of this lesion been offered.It is important to distinguish the frequently seen ostium-secundum defect from the less commonly seen endocardial-cushion defect because of the marked difference in . . .