The association of tricuspid atresia and persistent truncus arteriosus is a
very rare congenital anomaly. We report a newborn with a prenatal diagnosi
s of tricuspid atresia, in whom associated type II persistent truncus arter
iosus was found by postnatal echocardiography. The patient had mild cyanosi
s and developed heart failure soon after birth. Balloon septostomy was perf
ormed to enlarge the interatrial communication. However, her condition rapi
dly deteriorated and she died of sepsis and heart failure at the age of 14
days.