2024年5月15日 · Dextro-Transposition (pronounced DECKS-tro trans-poh-ZI-shun) of the Great Arteries or d-TGA is one type of congenital heart defect. Congenital means present at birth. This condition occurs when the heart's two main arteries carrying blood out of the heart are switched in position, or “transposed.”

2024年9月30日 · Dextro-TGA (d-TGA) occurs during cardiac development when the conotruncal septum, which normally spirals toward the aortic sac, forms linearly. This anomaly interferes with the normal division of the truncus arteriosus into the pulmonary and aortic channels, which form the pulmonary arteries and aorta.

2025年1月8日 · D-TGA is a form of cyanotic heart disease because there are two parallel circulations. The anatomy, pathophysiology, clinical features, and diagnosis of D-TGA will be presented here. The management and outcome of D-TGA are discussed separately. (See "D-transposition of the great arteries (D-TGA): Management and outcome".)

2020年12月7日 · In TGA, the aorta leaves the right ventricle (RV) (rather than the left as in a normal heart) and takes blue (unoxygenated) blood to the body while the pulmonary artery (PA) leaves the left (rather than right) ventricle (LV) and takes red (oxygenated) blood to the lungs.

With d-TGA, deoxygenated blood from the right heart is pumped immediately through the aorta and circulated to the body and the heart itself, bypassing the lungs altogether, while the left heart pumps oxygenated blood continuously back into the lungs through the pulmonary artery.

The American Heart Association explains the congenital heart defect d-transposition of the great arteries in children and adults.

2023年4月4日 · Complete transposition of the great arteries, also called dextro-transposition of the great arteries (D-TGA). This type reduces the amount of oxygen-rich blood to the body. Symptoms are usually noticed during pregnancy, immediately after …

Transposition of the great arteries (TGA) is a broad term that includes both dextro-TGA (d-TGA) and a rarer defect called levo-TGA (l-TGA). d-TGA: A more common variation in which the aorta is positioned to the right and front of the pulmonary artery, arising from …

Transposition of the great arteries (D-TGA) is a conotruncal abnormality characterized by discordant ventricular-arterial connections. In D-TGA, the aorta arises from the right ventricle and pulmonary artery arises from the left ventricle.

There are two types of TGA: Dextro transposition of the great arteries (D TGA): The aorta is to the right of the pulmonary artery. D-TGA is the most common form of TGA. This type of TGA almost always needs to be repaired in the first year of life. Levo transposition of the great arteries (L TGA): The aorta is to the left of the pulmonary artery.