Congenital tricuspid insufficiency. Definition and review.

Simple congenital tricuspid insufficiency (CTI) has, up to now, been loosely included with the larger Ebstein's anomaly (EA) group. Certain pathologic and clinical features of CTI deserve definition and a place apart from EA. A review of the literature has produced 20 clinical cases for analysis to which we add two cases successfully treated surgically. The high mortality in the neonatal age group (14 of 14) continues to be a formidable challenge, but the older survivors (2 of 8) would appear to have better prospects, based on our limited experience.