Transposition of the great vessels anatomy: Difference between revisions

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==Anatomy==
{{CMG}}; '''Associate Editor(s)-In-Chief:''' [[Priyamvada Singh|Priyamvada Singh, M.B.B.S.]] [mailto:psingh13579@gmail.com]; {{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@elon.edu]


<youtube v=D58eufx-_4Q/>
==Overview==


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 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, producing circulation functioning in parallel, instead of normal circulation functioning in series.
'''d-TGA''' is also referred to as '''complete''' or '''uncorrected''' transposition of the great arteries identifying the ''single discordance'' between ventricles and great arteries, whereas '''l-TGA''' is referred to as '''congenitally corrected transposition''', identifying a ''double discordance'' (atrioventricular and ventriculoarterial).


==References==
==References==
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[[fr:Transposition des gros vaisseaux]]
[[fr:Transposition des gros vaisseaux]]
[[zh:大血管轉位]]
[[zh:大血管轉位]]
[[Category:DiseaseState]]
[[Category:Cardiology]]
[[Category:Congenital heart disease]]
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Latest revision as of 18:36, 2 November 2012

Transposition of the great vessels Microchapters

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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]

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