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*Both terms are also commonly used, though to a slightly lesser extent, in reference to '''[[Levo-Transposition of the great arteries|levo-TGA]]''' ('''l-TGA''') - in which both the arteries and the [[ventricle (heart)|ventricles]] are swapped; while other defects in this category are almost never referred to by either of these terms. | *Both terms are also commonly used, though to a slightly lesser extent, in reference to '''[[Levo-Transposition of the great arteries|levo-TGA]]''' ('''l-TGA''') - in which both the arteries and the [[ventricle (heart)|ventricles]] are swapped; while other defects in this category are almost never referred to by either of these terms. | ||
*CHDs involving only the primary [[artery|arteries]] (pulmonary artery and aorta) belong to a sub-group called '''transposition of the great arteries''' ('''TGA'''). | *CHDs involving only the primary [[artery|arteries]] (pulmonary artery and aorta) belong to a sub-group called '''transposition of the great arteries''' ('''TGA'''). | ||
*Most patients have an interatrial communication. Two-thirds have a [[patent ductus arteriosus]], and about one-third have a [[ventricular septal defect]] [[VSD]]. | *Most patients have an interatrial communication. Two-thirds have a [[patent ductus arteriosus]], and about one-third have a [[ventricular septal defect]] [[VSD]]. | ||
==References== | ==References== | ||
Revision as of 18:40, 10 August 2011
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Transposition of the great vessels Microchapters |
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Classification |
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Differentiating Transposition of the great vessels from other Diseases |
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Diagnosis |
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Treatment |
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Surgery |
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Case Studies |
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Transposition of the great vessels overview On the Web |
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American Roentgen Ray Society Images of Transposition of the great vessels overview |
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Risk calculators and risk factors for Transposition of the great vessels overview |
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
<youtube v=ZY11g3VZGVI/>
Transposition of the great vessels (TGV)
- It refers to a group of congenital heart defects (CHDs) involving an abnormal spatial arrangement of any of the primary blood vessels: superior and/or inferior vena cavae (SVC, IVC), pulmonary artery, pulmonary veins, and aorta.
- The clinical signs and symptoms associated with TGV may range from a change in blood pressure to an interruption in circulation, depending on the nature and degree of the misplacement and which vessels are involved.
- The term "TGV" is often used as a more specific reference to transposition of the great arteries TGA; however, TGA only relates to the aorta and the pulmonary artery, whereas TGV is a broader term which can relate to these vessels as well as the SVC, IVC, and pulmonary veins.
- In its strictest sense, transposition of vessels relates only to defects in which two or more vessels have "swapped" positions; in a broader sense, it may be taken to relate to any defect in which a vessel is in an abnormal position.
- The terms TGV and TGA are most commonly used in reference to dextro-TGA (d-TGA) - in which the arteries are in swapped positions.
- Both terms are also commonly used, though to a slightly lesser extent, in reference to levo-TGA (l-TGA) - in which both the arteries and the ventricles are swapped; while other defects in this category are almost never referred to by either of these terms.
- CHDs involving only the primary arteries (pulmonary artery and aorta) belong to a sub-group called transposition of the great arteries (TGA).
- Most patients have an interatrial communication. Two-thirds have a patent ductus arteriosus, and about one-third have a ventricular septal defect VSD.