What is corrected TGA?

Corrected transposition of the great arteries is a very rare heart defect in which the heart’s lower two chambers, the ventricles, are reversed in their positions. It affects about 1 in 25,000 births and occurs equally in boys and girls.

How rare is CCTGA?

Congenitally corrected transposition of the great arteries (CCTGA) is a rare heart defect. Only 0.5 to 1 percent of all people with heart defects have CCTGA. This means there are about 5,000 to 10,000 people in the United States with this condition.

What is congenitally corrected TGA?

Congenitally corrected transposition of the great arteries (CCTGA) is a rare heart defect in which the heart’s lower half is reversed. It is also called L-TGA. It is different from and much less common than “regular” transposition of the great arteries (TGA or D-TGA).

When does VSD occur in patients with TGA?

This defect occurs occasionally with TGA and is actually helpful; it easily can be corrected at the time of surgery. VSD is an opening in the wall of tissue (ventricular septum) separating the right and left ventricles. This occurs in about 25 percent of patients with TGA.

How are the great arteries reversed in CCTGA?

In CCTGA both ventricles (pumping chambers) of the heart are reversed. Fortunately, the arteries are reversed too, so the heart actually “corrects” the abnormal development, thus the name “congenitally corrected transposition of the great arteries.”

What’s the difference between levo TGA and d-TGA?

D-TGA is often simply called “TGA.” However, “TGA” is a broader term that includes both dextro-TGA (d-TGA) and a rarer heart defect called levo-TGA (l-TGA), or congenitally corrected TGA, which is not discussed here.

Can a baby with TGA have an ASD?

Most babies with TGA have only that defect, but there are other defects that can occur with TGA: ASD is an opening between the right and left atria. This defect occurs occasionally with TGA and is actually helpful; it easily can be corrected at the time of surgery.