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'''Transposition of the great vessels''' ('''TGV''') | '''Transposition of the great vessels''' ('''TGV''') | ||
*It refers to a group of [[congenital | *It refers to a group of [[congenital heart defects]] involving an abnormal spatial arrangement of any of the primary blood vessel:superior vena cava and/or inferior vena cava,[[pulmonary artery]], [[pulmonary vein]]s, and [[aorta]]. | ||
*The clinical signs and symptoms associated with '''TGV''' may range from a change in [[blood pressure]] to an interruption in [[circulatory system|circulation]], depending on the nature and degree of the misplacement and which vessels are involved. | *The clinical signs and symptoms associated with '''TGV''' may range from a change in [[blood pressure]] to an interruption in [[circulatory system|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]]. | *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. | *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 | *The terms TGV and TGA are most commonly used in reference to [[dextro-TGA]]- in which the arteries are in swapped positions. | ||
*Both terms are also commonly used, though to a slightly lesser extent, in reference to | *Both terms are also commonly used, though to a slightly lesser extent, in reference to [[Levo-Transposition of the great arteries]]- 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 [[ | *CHDs involving only the primary [[arteries]] (pulmonary artery and aorta) belong to a sub-group called '''transposition of the great arteries'''. | ||
*Most patients have an interatrial communication. Two-thirds have a [[patent ductus arteriosus]], and about one-third have a [[ventricular septal defect | *Most patients have an interatrial communication. Two-thirds have a [[patent ductus arteriosus]], and about one-third have a [[ventricular septal defect]]. | ||
==References== | ==References== | ||
Revision as of 18:52, 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 involving an abnormal spatial arrangement of any of the primary blood vessel:superior vena cava and/or inferior vena cava,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- in which the arteries are in swapped positions.
- Both terms are also commonly used, though to a slightly lesser extent, in reference to Levo-Transposition of the great arteries- 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.
- Most patients have an interatrial communication. Two-thirds have a patent ductus arteriosus, and about one-third have a ventricular septal defect.