Transposition of the great vessels anatomy: Difference between revisions
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{{CMG}}; '''Associate Editors-In-Chief:''' [[Priyamvada Singh|Priyamvada Singh, MBBS]] [mailto:psingh@perfuse.org]; {{CZ}}; [[User:KeriShafer|Keri Shafer, M.D.]] [mailto:kshafer@bidmc.harvard.edu]; '''Assistant Editor(s)-In-Chief:''' [[Kristin Feeney|Kristin Feeney, B.S.]] [mailto:kfeeney@perfuse.org] | {{CMG}}; '''Associate Editors-In-Chief:''' [[Priyamvada Singh|Priyamvada Singh, MBBS]] [mailto:psingh@perfuse.org]; {{CZ}}; [[User:KeriShafer|Keri Shafer, M.D.]] [mailto:kshafer@bidmc.harvard.edu]; '''Assistant Editor(s)-In-Chief:''' [[Kristin Feeney|Kristin Feeney, B.S.]] [mailto:kfeeney@perfuse.org] | ||
==Overview== | |||
==Anatomy== | ==Anatomy== | ||
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<youtube v=D58eufx-_4Q/> | <youtube v=D58eufx-_4Q/> | ||
Normally, the morphologic [[right atrium]] ([[RA]]) is connected to a morphologic [[right ventricle]] ([[RV]]). The morphologic [[left atrium]] ([[LA]]) is connected to the morphologic [[left ventricle]] ([[LV]]). This is called atrio-ventricular concordance. | '''Normal Heart''' | ||
*Normally, the morphologic [[right atrium]] ([[RA]]) is connected to a morphologic [[right ventricle]] ([[RV]]). The morphologic [[left atrium]] ([[LA]]) is connected to the morphologic [[left ventricle]] ([[LV]]). This is called '''atrio-ventricular concordance'''. | |||
In a normal heart, the great arteries ([[aorta]] and [[pulmonary arteries]]) are concordant with the morphologic [[LV]] and [[RV]]. This is termed '''ventriculo-arterial concordance'''. In addition, the aorta and pulmonary trunk ascend in a spiral relationship | *In a normal heart, the great arteries ([[aorta]] and [[pulmonary arteries]]) are concordant with the morphologic [[LV]] and [[RV]]. This is termed '''ventriculo-arterial concordance'''. | ||
*In addition, the aorta and pulmonary trunk ascend in a '''spiral''' relationship. | |||
'''d-TGA''' is also referred to as '''complete''' or '''uncorrected''' transposition of the great arteries identifying the ''single discordance'' between ventricles and great arteries | '''Transposition of the great vessels''' | ||
*In the TGA the [[aorta]] arises from the morphologic [[right ventricle]] via a subaortic infundibulum and the [[pulmonary artery]] arises from the morphologic [[left ventricle]], without a subpulmonary infundibulum. These ventriculoarterial connection is known as '''ventriculoarterial discordance'''. As a consequence, there is a a fibrous continuity between the mitral and [[pulmonary valve]], but no continuity between the [[tricuspid]] and [[aortic valve]]. | |||
*The abnormal origin of the great arteries results in an altered spiral relationship. Therefore, the aorta and pulmonary artery run parallel to each other | |||
*In normal heart thus the circulation is in series. However, in transposition of the great vessels circulation is in parallel | |||
*'''d-TGA''' is also referred to as '''complete''' or '''uncorrected''' transposition of the great arteries identifying the ''single discordance'' between ventricles and great arteries | |||
*'''l-TGA''' is referred to as '''congenitally corrected transposition''', identifying a ''double discordance'' (atrioventricular and ventriculoarterial). | |||
==References== | ==References== | ||
Revision as of 11:10, 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 anatomy On the Web |
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American Roentgen Ray Society Images of Transposition of the great vessels anatomy |
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Risk calculators and risk factors for Transposition of the great vessels anatomy |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Priyamvada Singh, MBBS [2]; Cafer Zorkun, M.D., Ph.D. [3]; Keri Shafer, M.D. [4]; Assistant Editor(s)-In-Chief: Kristin Feeney, B.S. [5]
Overview
Anatomy
<youtube v=D58eufx-_4Q/>
Normal Heart
- Normally, the morphologic right atrium (RA) is connected to a morphologic right ventricle (RV). The morphologic left atrium (LA) is connected to the morphologic left ventricle (LV). This is called atrio-ventricular concordance.
- In a normal heart, the great arteries (aorta and pulmonary arteries) are concordant with the morphologic LV and RV. This is termed ventriculo-arterial concordance.
- In addition, the aorta and pulmonary trunk ascend in a spiral relationship.
Transposition of the great vessels
- In the TGA the aorta arises from the morphologic right ventricle via a subaortic infundibulum and the pulmonary artery arises from the morphologic left ventricle, without a subpulmonary infundibulum. These ventriculoarterial connection is known as ventriculoarterial discordance. As a consequence, there is a a fibrous continuity between the mitral and pulmonary valve, but no continuity between the tricuspid and aortic valve.
- The abnormal origin of the great arteries results in an altered spiral relationship. Therefore, the aorta and pulmonary artery run parallel to each other
- In normal heart thus the circulation is in series. However, in transposition of the great vessels circulation is in parallel
- d-TGA is also referred to as complete or uncorrected transposition of the great arteries identifying the single discordance between ventricles and great arteries
- l-TGA is referred to as congenitally corrected transposition, identifying a double discordance (atrioventricular and ventriculoarterial).