Transposition of the Great Arteries can also be challenging to detect on a prenatal ultrasound. In this heart problem, the low oxygen blood coming in from the body is sent right back to the body without going through the lungs.
![Transposition of the Great Arteries (TGA)](../images/heart-atlas/transposition-of-the-great-arteries-560.jpg)
Transposition of the Great Arteries (TGA)