Transposition of the great vessels anatomy: Difference between revisions

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{{CMG}}; '''Associate Editor(s)-In-Chief:''' [[Priyamvada Singh|Priyamvada Singh, M.B.B.S.]] [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 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]


==Overview==
==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
'''dextro-Transposition of the great vessels'''
*'''d-TGA''' is also referred to as '''complete''' or '''uncorrected''' transposition of the great arteries identifying the ''single discordance'' between ventricles and great arteries
'''levo-Transposition of the great vessels'''
*'''l-TGA''' is referred to as '''congenitally corrected transposition''', identifying a ''double discordance'' (atrioventricular and ventriculoarterial).


==References==
==References==
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[[Category:Disease]]
[[Category:Cardiology]]
[[Category:Congenital heart disease]]

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]

Overview

References

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