Echo in transposition of the great arteries

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Editors-in-Chief: Eli V. Gelfand, MD and Keri Shafer, MD (Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA)

Transposition of the Great Arteries

Echocardiogram done in TGA to evaluate:

• atrioventricular connections
• atrial morphology: determined by venous return and atrial appendage morphology
• ventricular morphology:
  • determined by presence of moderator band (right ventricle), trabeculi, valvular morphology, etc.
  • seen best in subcostal, parasternal short axis and apical 4 chamber views
• presence of outflow obstruction

Though transthoracic echo can provide valuable information, in adults a transesophageal echo (TEE) is usually necessary. Typically, MRI is performed as well.

Consists of two basic types:

• D-TGA
• L-TGA otherwise known as congenitally-corrected TGA

D-TGA

Image obtained from: [1]

L-TGA (congenitally-corrected TGA)

Echo series of ccTGA:

LA-RV RA-LV connections

RV-aorta LV-PA connections

For more information please go to Transposition of the great vessels.