D-Transposition of great arteries: How to perform prenatal diagnosis?

Abstract

Prenatal screening for congenital heart disease has evolved significantly in recent years, thanks to technological advances that have made it possible to visualize the fetal heart by fetal echocardiography, thus allowing early detection of this type of anomaly. 

Prenatal diagnosis of congenital heart disease allows the health personnel involved to be prepared for the reception of the newborn and to support the family in understanding and making decisions.

Transposition of the great arteries (d-TGA) is a cyanotic congenital heart disease that is surgically resolved at birth. This anomaly may go undetected prenatally because the four-chamber image of the heart on screening ultrasound is usually normal. The incorporation of routine evaluation of the outflow tracts has improved its prenatal detection.

In this report, we present a case of prenatal diagnosis of d-TGA with intact interventricular septum, emphasizing the most relevant echocardiographic images used to make the diagnosis.