Dextro-transposition of the great arteries classification

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Transposition of the great arteries
Transposition of the great arteries
Transposition of the great arteries

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Dextro-transposition of the great arteries
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Priyamvada Singh, M.B.B.S. [2]; Cafer Zorkun, M.D., Ph.D. [3]; Keri Shafer, M.D. [4]; Assistant Editor(s)-In-Chief: Kristin Feeney, B.S. [5]

Overview

Classification

Simple d-TGA: No other associated cardiac defects are present.

Complex d-TGA: d-TGA is often accompanied by other heart defects, the most common type being intracardiac shunts such as atrial septal defect (ASD) including patent foramen ovale (PFO), ventricular septal defect (VSD), and patent ductus arteriosus (PDA). Stenosis of valves or vessels may also be present. An accompanying VSD is present in 40% of these patients. Pulmonary stenosis and a VSD are present in 31% of patients.

Although it may seem counterintuitive, complex d-TGA presents better chance of survival and less developmental risks than simple d-TGA, as well as usually requiring fewer invasive palliative procedures. This is because the left-to-right and bidirectional shunting caused by the defects common to complex d-TGA allow a higher amount of oxygen-rich blood to enter the systemic circulation. However, complex d-TGA may be associated with a slight increase in the length and risk of the corrective surgery, as most or all other heart defects will normally be repaired at the same time.

Acknowledgements and Initial Contributors to Page

Leida Perez, M.D.

External links

• Diagram at kumc.edu
• Diagram and description at umich.edu
• Overview at pediheart.org
• Royal Children's Hospital, Melbourne
• Mayo Clinic, Arizona - Florida - Minnesota, USA