Transposition of the great vessels anatomy: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 8: | Line 8: | ||
<youtube v=D58eufx-_4Q/> | <youtube v=D58eufx-_4Q/> | ||
'''Normal Heart''' | '''Normal Heart''' | ||
| Line 18: | Line 19: | ||
*The abnormal origin of the great arteries results in an altered spiral relationship. Therefore, the aorta and pulmonary artery run parallel to each other | *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 | *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 | *'''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). | *'''l-TGA''' is referred to as '''congenitally corrected transposition''', identifying a ''double discordance'' (atrioventricular and ventriculoarterial). | ||
Revision as of 11:11, 10 August 2011
|
Transposition of the great vessels Microchapters |
|
Classification |
|---|
|
Differentiating Transposition of the great vessels from other Diseases |
|
Diagnosis |
|
Treatment |
|
Surgery |
|
Case Studies |
|
Transposition of the great vessels anatomy On the Web |
|
American Roentgen Ray Society Images of Transposition of the great vessels anatomy |
|
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
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).