Congenitally Corrected Transposition of the Great Arteries

In this complex malformation, the ventricles are on the opposite side of the heart to usual. The atria are connected to the incorrect ventricles and the great arteries also come from the wrong ventricles (transposition). Despite these problems, blood from the lungs passes to the aorta, so the child is not cyanosed. Other heart defects are commonly present (e.g. VSD, valve abnormalities, coarctation, pulmonary stenosis).